Rhyous

Hey all,

After working with QlikView for a few days, and working with the calendar, here is my new and improved load script for a Calendar.

Calendar:
LET vDateMin = Num(MakeDate(2000,1,1));
LET vDateMax = Floor(YearEnd(Today()));

TempCalendar:
LOAD
	$(vDateMin) + RowNo() - 1 AS DateNumber,
	Date($(vDateMin) + RowNo() - 1) AS TempDate
AUTOGENERATE 1
WHILE $(vDateMin)+IterNo()-1<= $(vDateMax);

MasterCalendar:
LOAD
	TempDate AS CalendarDate,

	// Standard Date Objects
	Day(TempDate) AS CalendarDay,
	WeekDay(TempDate) AS CalendarWeekDay,
	Week(TempDate) AS CalendarWeek,
	Month(TempDate) AS CalendarMonth,
	'Q' & Ceil(Month(TempDate)/3) AS CalendarQuarter,
	Year(TempDate) AS CalendarYear,

	// Calendar Date Names
	DayName(TempDate) as CalendarDayName,
	WeekName(TempDate) as CalendarWeekName,
	MonthName(TempDate) as CalendarMonthName,
	QuarterName(TempDate) as CalendarQuarterName,
	YearName(TempDate) as CalendarYearName,

	// Start Dates
	DayStart(TempDate) as CalendarDayStart,
	WeekStart(TempDate) as CalendarWeekStart,
	MonthStart(TempDate) as CalendarMonthStart,
	QuarterStart(TempDate) as CalendarQuarterStart,
	YearStart(TempDate) as CalendarYearStart,

	// End Dates
	DayEnd(TempDate) as CalendarDayEnd,
	WeekEnd(TempDate) as CalendarWeekEnd,
	MonthEnd(TempDate) as CalendarMonthEnd,
	QuarterEnd(TempDate) as CalendarQuarterEnd,
	YearEnd(TempDate) as CalendarYearEnd,

	// Combo Dates
	'Q' & Ceil(Month(TempDate)/3) & '/' & Year(TempDate) AS CalendarQuarterAndYear

RESIDENT TempCalendar ORDER BY TempDate ASC;

DROP TABLE TempCalendar;

LET vDateMin = Null();
LET vDateMax = Null();

It is much better and more complete than the previous one I had.

Update: Here is what I am using now. Almost the same, but not quite:

///$tab Calendar
Calendar:
LET vDateMin = Num(MakeDate(2003,1,1));
LET vDateMax = Floor(MonthEnd(Today()));
LET vDateToday = Num(Today());

TempCalendar:
LOAD
  $(vDateMin) + RowNo() - 1 AS DateNumber,
  Date($(vDateMin) + RowNo() - 1) AS TempDate
AUTOGENERATE 1
WHILE $(vDateMin)+IterNo()-1<= $(vDateMax);

Calendar:
LOAD
	Date(TempDate) AS CalendarDate,

    // Standard Date Objects
	Day(TempDate) AS CalendarDayOfMonth,
	WeekDay(TempDate) AS CalendarDayName,
	Week(TempDate) AS CalendarWeekOfYear,
	Month(TempDate) AS CalendarMonthName,
	'Q' & Ceil(Month(TempDate)/3) AS CalendarQuarter,
	Year(TempDate) AS CalendarYear,

	// Calendar Date Names
    WeekName(TempDate) as CalendarWeekNumberAndYear,
    MonthName(TempDate) as CalendarMonthAndYear,
    QuarterName(TempDate) as CalendarQuarterMonthsAndYear,

	// Start Dates
	DayStart(TempDate) as CalendarDayStart,
    WeekStart(TempDate) as CalendarWeekStart,
    MonthStart(TempDate) as CalendarMonthStart,
    QuarterStart(TempDate) as CalendarQuarterStart,
    YearStart(TempDate) as CalendarYearStart,

	// End Dates
	DayEnd(TempDate) as CalendarDayEnd,
    WeekEnd(TempDate) as CalendarWeekEnd,
    MonthEnd(TempDate) as CalendarMonthEnd,
    QuarterEnd(TempDate) as CalendarQuarterEnd,
    YearEnd(TempDate) as CalendarYearEnd,

    // Combo Dates
    'Q' & Ceil(Month(TempDate)/3) & '/' & Year(TempDate) AS CalendarQuarterAndYear,
    Year(TempDate) & '/' & 'Q' & Ceil(Month(TempDate)/3) AS CalendarYearAndQuarter,
    'Wed ' & DayStart(WeekStart(TempDate) + 3) as CalendarWednesdays

RESIDENT TempCalendar ORDER BY TempDate ASC;

DROP TABLE TempCalendar;

LET vDateMin = Num(MakeDate(2000,1,1));
LET vDateMax = Floor(YearEnd(AddMonths(Today(), 12)));
LET vDateToday = Num(Today());

STORE Calendar INTO C:\ProgramData\QlikTech\Support\QVD\Calendar.qvd;

Code Like You Speak

Ok, so I wrote a post about why I use long variable names, where I discussed how it is very easy to use long filenames with today’s IDEs. As I code more and more I realize how I want to write like I speak.

As I try to read other people’s code, I have to wonder if they could even understand it themselves if they went six months without touching it.

For example, lets say I am working with a database that has phone numbers and for each phone number I want to do check if it is valid:

Example 1

PhoneNumber p = new PhoneNumber("555-555-5555");
if (p.isValid())
{
    // do something
} else
{
    // Do something different
}

There is nothing wrong with the above code. It even makes sense, mostly because the first line where p is created is right next to the if statement. But of course that is not always the case.

Maybe I have dozens of objects for different database attributes including multiple ojects that start with ‘p’: PhoneNumber, PartList, PersonID, and they all have an isValid() method and those objects are created elsewhere in the code, who knows where. Also, your isValid() function in PhoneNumber checks if the PhoneNumber is formatted correctly, but the isValid() function in PartList checks if it is a valid part in the database and the isValid() function in PersonID does something different, now the above code would be more confusing, especially to some one else reading it (or to yourself six months after writing it).

if (p.isValid())
{
    // do something
} else
{
    // Do something different
}

So if we don’t have the declaration right next to the code, it is hard to understand…

You might say, “Load it in a debugger and just look…why is it so hard?”

My response is this. “What about your Team Leads for you Tech Support team? What about your documentation team? They may have that has access to read the code but they don’t have the tools or know how to compile it. But they may need to see your code to get their job done. And I don’t want to offend your project managers, but there sure are a lot of Project Managers that either never had the ability or have lost the skill to compile code.”

So someone else reading your code is lost. What does p represent? PhoneNumber, PartList, PersonId? What is the object? What does isValid() check for on this object?

So lets code like we speak. First you should say what we really want to do in your language. The sentence below is a valid English sentence and anybody who speaks English can understand it.

If the current phone number is formatted correctly, do something, else do something different.

Well, what if the code were written like this:

// This could be anywhere in code
PhoneNumber theCurrentPhoneNumber = new PhoneNumber("555-555-5555");

// A code like you speak if statement
if (theCurrentPhoneNumber.isFormattedCorrectly())
{
    // do something
} else
{
    // do something different
}

See how it is in “code like you speak” format?

So you may here different theories about writing code and whether to document with comments or not document and have clear code. I am for the theory that when you write your code you should assume that the person reading your code:
1. Doesn’t understand code.
2. Has no technical skills
3. Has an average IQ (in the 90s).
4. Is the worst technical ever who has to document your code…
etc, etc, etc…

So that is why “Code like you speak” is a great way to code. If your technical writer reads the first example, he is confused, but if he read the second, he fully understands the idea what it going one.

Now, it is important that you don’t over do it. You don’t need to have perfect English. Broken English is fine. As you practice you will get better at it. As you get better at it, your code becomes more readable and others can work on it easier. This is especially usefully when working in teams, or one a community-developed open source application.

Don’t go overboard! I mean, there is not reason to define the word “othewise” to replace “else”. If you did that, you may actually confuse veteran developers.

// In a header somewhere...
#define otherwise else

// This could be anywhere in code
PhoneNumber theCurrentPhoneNumber = new PhoneNumber("555-555-5555");

// A code like you speak if statement
if (theCurrentPhoneNumber.isFormattedCorrectly())
{
    // do something
}
otherwise
{
    // do something different
}

However, if the “Code like you speak” development style takes off, the above may not be so overboard, and may become a standard practice to define many English synonyms to help one code in a more clear and understandable method.

One might argue that because not every one speaks english, a language barrier would be more likely, and I would have to disagree. If you code like you speak, someone who doesn’t speak your language could still figure it out a lot faster using something like a language translation tool (such as google’s or babblefish’s) than they could by trying to figure out what a random object is.

As for other style guide information, there are lots of style guides. If you need one and don’t have one, start with this one:
http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml

Ok, so I have another complaint about Windows 7 and Explorer.

I am sure my system is in a state based on my usage that leads to this bug because it doesn’t always happen.

I wonder if this problem has the same cause as this one:
Windows 7 hangs when creating a new folder and hangs again when renaming it

Problem

Files deleted in Explore sometimes don’t delete from explorer right away, though they do delete. It takes too long to update. It takes far too long to update. It takes abismally too long to update. (I consider anything over 1 second too long, anything over 2 seconds far too long, and anything over 10 seconds abismally too long.)

Time to update is sometimes as long as 45 seconds.

Steps to duplicate

Here is what I do:

1. Delete a file in a folder.
2. Wait 15 seconds or more and the file doesn’t show as deleted.
3. Delete the file again and it says it is already deleted.

Getting to the state where this occurs
Unknown but here is what I do

I have a T61p Laptop running Windows 7 64 bit.
I am joined to a Windows 2003 domain and often the domain controller is not available (like I said I have a laptop).

I use Remote Desktop.
I use network shares often.
I use Visual Studio often.
I use Outlook often.
I use Firefox and IE often.
I have Windows Live Messenger running all the time.
Sometimes I VPN into work.
I do all of the above while VPNed

Software with plugins to explorer include: TortoiseSVN and Notepad++ (could be something they are doing, but even if it is, why would microsoft allow code that calls a plugin to execute when deleting a file?)

Resolution
Unknown, but the problem comes and goes.

Conclusion
Microsoft didn’t not test Explorer in production environments very well or they would have seen this.
If they have seen this and haven’t fixed then that would make me more annoyed.

Ok, so you want to evaluate and open source application?

What guidelines should you use? Here is a guideline. I will continue to update this as I find valid items to measure. If you have something I should add to the list, please let me know.

Obtaining the Software

1. A top link in search engine when searching for open source app’s name?

2. A quick download link?
3. Clear description of different downloads per platform?

Installation of Open Source App

1. Clear description of different downloads per platform?
   List of platforms:

2. Ease of install score:
3. Ease of initial configuration score:

Authentication

1. Integration with Active Directory?
   Score:

2. Integration with LDAP?
   Score:

3. Database authentication?
   Explanation: Can authentication occur in a database such as Postgresql, MySQL, etc…
   Supported Database list:
   Score:

4. Authentication to a 3rd party programs database?
   Explanation: So that if you have an application A with a database that hosts a username a password, can this open source application B use your database from application A to authenticate?
   Score:

Security

1. How secure is this application?

2. What security holes have been reported and fixed?
3. What development designs were taken into consideration to enhance security?
4. What security analysis tools such as Nessus has this open source application been analyzed with?

Documentation

1. Install guide exists?
   Quality Score:

2. Users guide exists?
   Quality Score:

3. Admin guide exists?
   Quality Score:

4. Developer’s guide exists?
5. Compile/Debug guide on how to load in an IDE and compile and debug (Visual Studio 2008, Eclipse, KDevelop, other, etc…)
6. Guide for submitting a bug or suggestion?
7. Guide for contributing documentation?
8. Ease of contribution Documentation?

Ease of Use

1. Is the application easy to use?

2. Can non-technical users use the application with minimal training?

Stability

1. How stable is the application? Determine this from normal use for a period of time.

2. How stable is the platform(s) and/or 3rd party dependencies the application runs/depends on?
3. Does the application crash with normal use?
4. Does the application crash with abnormal use?
5. Does the application crash with prolonged use?
6. Is the process for submitting a bug simple?
7. Is the process for applying a patch simple?
8. Does applying patches decrease stability?

Community Strength

1. Is it being maintained by a strong community?

2. Is there a high adoption rate for this application?
3. What is the average turn around time for a bug in the community?
4. Is there a forum? What is forums user base? How quick do questions get responses?
5. Is there a mailing list?
6. Is there an RSS feed?

Customization of Open Source Application

1. What language is this written in?

2. Ease of customization.
3. Ease of contributing to project
4. Ease of compiling/debugging?
5. Ease of getting fixes committed to source?

Scalability

1. Does the application scale well with increased usage?

2. Does this application integrate with the two most used operating systems for desktops? Windows and OS X?

So previously I released the following post:
How to install dotProject 2.1.2 on FreeBSD 7.2 with Apache 2.2, PHP5, and MySQL 5.1 Server?

Now I am following up as promised with how to integrate this with Active Directory and AD’s LDAP. You need to know your LDAP Active Directory info. If you don’t, you need to get it. Or else maybe your domain is generic enough that looking at my examples will get you there.

1. Log in to dotProject.

2. Click on System Admin | Default User Preferences.

   We will make changes to the following sections:

   • User Authentication Settings

   • LDAP Settings

   These section are show in this screen shot. After this screen shot instructions on configuring these sections are provided.

   

3. Scroll to the section called User Authentication Settings.
4. Change the User Authentication Method setting to LDAP.
5. Configure the LDAP Settings section.
   1. For LDAP Host, Enter the IP address of your Active Directory server.

   2. Do not change the LDAP Port or LDAP Version settings.
   3. On a default Active Directory installation, set the LDAP Base DN to the following:
      CN=Users,DC=YourDomain,DC=tld

      For example, the lab I am demoing this with is LD.Lab so it would be this:

      CN=Users,DC=ld,DC=lab
   4. For LDAP User Filter enter the following:
      (sAMAccountName=%USERNAME%)
   5. For the LDAP Search User, enter a domain user:
      CN=John Doe,CN=Users,DC=ld,DC=lab

      SUGGESTION: Create a service account on the domain with a really intense password and almost no rights, except of course the right to search LDAP so it can be an LDAP Search User.

   6. Obviously for the LDAP Search User Password, enter the password for the LDAP Search User.

      IMPORTANT! You must update this password here when the user’s changes in Active Directory (sorry for the “No duh” moment but it had to be said).

6. Scroll down and on the bottom right of the Default User Preferences page, click Save.

Go ahead and try to login as a Domain User.

Note On Changing Permissions
Domain Users may appear to get the Administrator role, but this is not really the case. They only get the Anonymous role when they first login. See my forum post here:
How to make an LDAP user an administrator?

Also, it appears that if you want all users who login to get more permissions, then edit the Anonymous role or modify every user individually. (Yeah, so the project needs some features in this area…maybe you want to become a contributor and develop it yourself?)

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Copyright ® Rhyous.com – Linking to this article is allowed without permission and as many as ten lines of this article can be used along with this link. Any other use of this article is allowed only by permission of Rhyous.com.

Hey this was really easy. Really, it is just a matter of aliasing your ls commands. However, it is only really easy if you know how to do it. When you forget, it is annoying. So here is another post to store the info I once knew but forgot and had to learn again.

Using sh, the default shell

1. Edit your .shrc file in your home folder:
   # ee /usr/home/username/.shrc
2. Add/Change the alias commands as follows:
   alias ls=’ls -G’
   alias ll=’ls -laFoG’
   alias l=’ls -lG’

   The first one I added, the second two I only added the -G parameter to the already existing aliases for ls.

3. Save and close the file.
4. Logout and login and your shell should have colors when you use ls.

Using bash

1. Edit your .shrc file in your home folder:
   # ee /usr/home/username/.shrc
2. Add/Change the alias commands as follows:
   alias ls=’ls -G’
   alias ll=’ls -laFoG’
   alias l=’ls -lG’

   The first one I added, the second two I only added the -G parameter to the already existing aliases for ls.

3. Save and close the file.
4. Copy the .profile file to .bash_profile.
   # cp /usr/home/username/.profile /usr/home/username/.bash_profile
5. Edit the .bash_profile and add the following:
   # Source the .shrc
   source .shrc
6. Logout and login and your bash shell should have colors when you use ls.

Using csh, the default shell for root

1. As root, edit your .cshrc file in either your home folder or in the home folder for root:

   Your home folder:

   # ee /usr/home/username/.cshrc

   Home folder for root:

   # ee /root/.cshrc
2. Add/Change the alias commands as follows: (The syntax is slightly different than for sh or bash)
   alias ls ls -G
   alias la ls -aG
   alias lf ls -FAG
   alias ll ls -lAG

   The first one I added, the others I only added the -G parameter to the already existing aliases for ls.

3. Save and close the file.
4. Logout and login and your shell should have colors when you use ls.

bash and sh for all users

1. Edit your .shrc file in your home folder:
   # ee /usr/home/username/.shrc
2. Add/Change the alias commands as follows:
   alias ls=’ls -G’
   alias ll=’ls -laFoG’
   alias l=’ls -lG’

   The first one I added, the second two I only added the -G parameter to the already existing aliases for ls.

3. Save and close the file.
4. Cat this file to /etc/profile.
   # cat /usr/home/username/.shrc > /etc/profile
5. Logout and login and your shell should have colors when you use ls.

csh for all users

1. As root, edit your .cshrc file in either your home folder or in the home folder for root:

   Your home folder:

   # ee /usr/home/username/.cshrc

   Home folder for root:

   # ee /root/.cshrc
2. Add/Change the alias commands as follows: (The syntax is slightly different than for sh or bash)
   alias ls ls -G
   alias la ls -aG
   alias lf ls -FAG
   alias ll ls -lAG

   The first one I added, the others I only added the -G parameter to the already existing aliases for ls.

3. Save and close the file.
4. Cat this file to /etc/csh.cshrc.
   # cat /usr/home/username/.cshrc > /etc/csh.cshrc
5. Logout and login and your shell should have colors when you use ls.

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Copyright ® Rhyous.com – Linking to this article is allowed without permission and as many as ten lines of this article can be used along with this link. Any other use of this article is allowed only by permission of Rhyous.com.

How to remove the ^M characters in a file on FreeBSD?

This is simple:

There are multiple ways to do it. One is actually included in the FreeBSD-tips file:

So if you installed the “games” distribution, you get tips every time you log in. And once in a while the above tip will show up.

I had never used that one however, I had always used this one (which I modified) that I found here: http://sed.sourceforge.net/sed1line.txt

However, this one works with the sh, tcsh and bash but not with the csh shell.

This one worked on csh but I am not sure if it is recommended as it assumes every line ends with ^M.

Anyway, I like how FreeBSD supports the -i parameter. Because if I am doing lots of files, I can have a script that does each file in a directory and then (of course I have a back up just in case) I can run sed -i.bak ‘s/.$//’ filename on each file and then do delete all .bak files so every file “appears to be” edited in place.

How to install dotProject 2.1.2 on FreeBSD 7.2 with Apache 2.2, PHP5, and MySQL 5.1 Server?

The basic overview.

1. Install FreeBSD.
   How do I install FreeBSD?
2. Update FreeBSD and download the ports tree.
   What are the first commands I run after installing FreeBSD
3. Then install Apache + SSL.
   Installing an Apache + SSL on FreeBSD using the ports tree
4. Then install MySQL.
   How to install MySQL on FreeBSD 7.2 or on Red Hat 5.4?
5. Configure MySQL to be Unicode.
   How to create a UTF-8 Unicode Database on MySQL and make UTF-8 Unicode the default?Note:
6. Secure MySQL. I don’t have a post on this, but you can follow these MySQL pages.
   Securing the Initial MySQL Accounts
   General Security Guidelines

   Note: If you know what you are doing, you can go with any database that dotProject supports, such as Postgresql.

7. Install PHP5and PHP5-Extensions and make sure to include the MySQL extensions and the LDAP extension.

How to install PHP5 and PHP5 Extensions on FreeBSD?

8. Then install DotProject

I have previous documents about installing each of the steps above installing dotProject. Once you have gone though the above documents, you will be ready for this document. This document will only cover dotProject.

Installing dotProject 2.1.2 from Ports

1. Install dotProject from ports using one of the following commands (I use the first one when doing virtual hosts and the second one when just using sub directories of the web root).

   # #	cd /usr/ports/www/dotproject make install

   Note: If you Apache directory is /usr/local/www/apache22/data you may want to use this make command:

   # #	cd /usr/ports/www/dotproject make DOTPROJECTDIR=/usr/local/www/apache22/data/dotproject install

2. Create a database in MySQL for dotProject. Name it whatever you want. For this example, I am going to name the database dotProjDB. If you have read the articles about MySQL that I referenced above, you should know how to log into to MySQL, but just in case you forgot, I will show you again.There are lots of ways to create a database in MySQL, and I am going to give you one example using the shell and the MySQL client.

   #	mysql -u root -p

   Enter your password and you should be taken to a mysql prompt.

   mysql>

   create database dotprojdb

   Yes it is that simple. And at the same time no it is not that simple. There is a lot more to know such as where to put the database files and how fast of drives you need, whether you need faster read speed or faster write speed or both, but this will suffice for now.

3. Create a mysql user account for this database. We don’t want to user the root account.
   See this page in the MySQL documentation for more information on this: Adding User Accounts

   mysql>	CREATE USER ‘dpuser’@'localhost’ IDENTIFIED BY ‘P@sswd!’;
   Query OK, 0 rows affected (0.01 sec)
   mysql>	GRANT SELECT,INSERT,UPDATE,DELETE,CREATE,DROP ON dotprojdb.* TO ‘dpuser’@'localhost’;
   Query OK, 0 rows affected (0.01 sec)

4. Now open a web browser to your server’s site: http://yourserver/dotprojectYou will see the following page.

   No need to do anything on this page because it should redirect you after 5 second to a dotProject configuration web page.

   

   Now some of the items in red need to be taken care of. Not all of them, just some of them.

   The first group of items are “Requirements” and anything not with a pretty green check mark under the “Requirements” section needs to be fixed.

   However, under the “Database Connectors” section, there are lots of red Xs. We don’t need to fix these. We just need one database, so as long as the database you want to use (in this example it’s MySQL) has a pretty green check mark, you don’t need to do add more “Database Connectors”.

5. Fix the first error: Session Save Path writable? X Fatal: session.save_path is not setTo do this, follow these steps:
   1. Change to the directory that contains the php.ini file. On FreeBSD that directory is here: /usr/local/etc

      #	cd /usr/local/etc

   2. Now by default the PHP5 port on FreeBSD doesn’t install a php.ini file, but instead provides two example php.ini files: php.ini-recommended and php.ini-dist. So copy one of them to php.ini.

      #	cp php.ini-recommended php.ini

   3. Edit the php.ini file and remove the comment from this line:
      ;session.save_path = “/tmp”

      I use ee which is the command to open Easy Editor. But you can use vi or whatever.

   4. Save the file and exit.
6. The other issue is this one: Session AutoStart = ON? X Failed Try setting to ON if you are experiencing a WhiteScreenOfDeathOk. So this issue is fixed is in that same php.ini file. So repeat the steps only this time we don’t remove a comment, we change a setting from 0 to 1. Find the following line and change it from 0 to 1, as shown.
   session.auto_start = 1
7. Restart apache. This is required and must be done before these settings will take effect.

   #	/usr/local/etc/rc.d/apache22 restart

8. Now you are ready to click the “Start Installation” button. So go ahead and click it. The following page should appear.
9. Enter the details as shown in the page. Hopefully you have your own database user and password to use.
10. Should you click the “User persistent connection?” option? Well, read this. http://www.php.net/manual/en/features.persistent-connections.phpI am not going to check it.
11. Click “Install db and write config”. It should succeed and you should see this new page.
    
12. Now go back to the dotproject home page: http://yourserver/dotprojectLogin with the default user name and password and you are ready to go.

    UPDATE:
    Check out my new update to this:
    How to configure dotProject 2.1.2 to authenticate using Active Directory’s LDAP?

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Copyright ® Rhyous.com – Linking to this article is allowed without permission and as many as ten lines of this article can be used along with this link. Any other use of this article is allowed only by permission of Rhyous.com.

How to create a Calendar in QlikView 9?

UPDATE: Check out my new calendar here: http://rhyous.com/2009/11/30/my-new-and-improved-calendar-in-qlikview/

Ok, so the fact that I cannot just have one line in a Load Script is a negative for QlikView. In a perfect world, I would have one line that would give me a bunch of possible values I could use for a dimension, such as CalendarDay, CalendarWeek, CalendarMonth, CalendarQuarter, CalendarYear, etc… It would be one line like this:

Alas…it is not a perfect world, so this feature doesn’t exist in QlikView. (Enhancement Request please!!!!)

So there is a Wiki on how to do it. Here is the link.

http://community.qlikview.com/wikis/qlikview-wiki/how-to-create-a-calendar.aspx

However, the problem is that this didn’t work.

So after some research I remember that internet search engines exist and I don’t have to just search QlikView’s site and documentation. I did a google search for this string:
qlikview how to create a calendar

The script didn’t fail to load…yeah…wait…there is not data in my report that has to do with a Calendar.

This sucks. Why can’t I just create a new Calendar. This is common problem with some software companies. There is a “key features” that can be done, but with great difficulty. However, because it can be done, they don’t spend any more development time on it.

Anyway, I added a post in the QlikView Forum and watched the QlikView free training Video for developers (especially module 8).

Here is the result:

LET vDateMin = Num(MakeDate(2000,1,1));
LET vDateMax = Floor(YearEnd(AddMonths(Today(), 12)));
LET vDateToday = Num(Today());

TempCalendar:
LOAD
  $(vDateMin) + RowNo() - 1 AS DateNumber,
  Date($(vDateMin) + RowNo() - 1) AS TempDate
AUTOGENERATE 1
WHILE $(vDateMin)+IterNo()-1<= $(vDateMax);

MasterCalendar:
LOAD
	TempDate AS CalendarDate,
	Day(TempDate) AS CalendarDay,
	WeekDay(TempDate) AS CalendarWeekDay,
	Week(TempDate) AS CalendarWeek,
	Month(TempDate) AS CalendarMonth,
	Year(TempDate) AS CalendarYear,
	'Q' & Ceil(Month(TempDate)/3) AS CalendarQuarter,
	WeekDay(TempDate) & '-' & Year(TempDate) AS CalendarWeekAndYear,
	Month(TempDate) & '-' & Year(TempDate) AS CalendarMonthAndYear
RESIDENT TempCalendar ORDER BY TempDate ASC;

DROP TABLE TempCalendar;

LET vDateMin = Num(MakeDate(2000,1,1));
LET vDateMax = Floor(YearEnd(AddMonths(Today(), 12)));
LET vDateToday = Num(Today());

Now when your script loads, you can right click and choose New Sheet Object, Slider/Calendar Object.

Choose Calender, not Slider and base it off of the CalendarDate field. Also on the Sort tab, use the Numeric Value to change the sort to Descending.

How to create a directory in C++?

Ok, so this is another task that should be simple but isn’t. Come on C++ Standards people. C++ has been out for decades and you haven’t figured out how to get all Operating Systems to conform to a single piece of code to make a directory? Write an standard and release it.

This document is for Windows, I will talk about FreeBSD some time later.

If wxWidgets can do it with the filefn.h, why can’t the standard C++ Library?

Supposedly Boost can do it also but the standards people are taking their sweet time getting Boost in.

So here is how it can be done. The headers names are the project types I chose in Visual Studio 2008.

Windows Empty Project

Create a main.cpp and put the following in it.

#include <iostream>
#include <string>
#include <direct.h>
#include <sys/stat.h>

using namespace std;

int main ()
{
	string directoryName = "c:\\programdata\\MyApp";

	struct stat st;
	if (stat(directoryName.c_str(), &st) == 0)
	{
		cout << "The directory exists." << endl;
	}
	else
	{
		int mkdirResult = _mkdir(directoryName.c_str());
		if (mkdirResult == 0)
		{
			cout << "The directory is created." << endl;
		}
		else
		{
			cout << "The directory creation failed with error: " + mkdirResult << endl;
		}
	}
}

Windows CLR Console Application

#include "stdafx.h"

using namespace System;
using namespace System::IO;
int main()
{

   String^ directoryName = "C:\\ProgramData\\MyApp";
   if ( Directory::Exists( directoryName ) )
   {
	   Console::WriteLine( "The directory exists.");
       return 0;
   }
   else
   {
	   try
	   {
		  DirectoryInfo^ directoryInfo = Directory::CreateDirectory(directoryName);
	   }
	   catch ( Exception^ e )
	   {
		   Console::WriteLine(e->ToString());
	   }
   }
}