Tutorials

WordPress change post_date for tests

by  on  in WordPress • 0 Comments

If you want to create a post via the post factory in you tests you can do it like this:

Make sure to pass a date! Unix timestamps or other formats won’t work. This creates 2 posts with different dates. You can test the function getPostsInYear(2014) as follows:

Post1 should not be returned by getPostsInYear( 2014 ) because… Read more →

How to install Scrapy

by  on  in Common, Tutorials • 2 Comments

This line installs all requirements for pip first. After that you can install pip. With pip you can install Scrapy.

This should avoid errors like:

The reason for this error might be “out of memory”. Check the last lines of  dmesg | tail Read more →

WordPress action or filter not called

by  on  in WordPress • 0 Comments

If you are using the wordpress api to hook into actions or filters there are some pitfalls. But these pitfalls are not wordpress related but likely your faults. I wan’t to show how to NOT hook into wordpress. 1. add_action( "actionA", array( __CLASS__, "processA", 10, 3) ); Please check the array declaration. Stupid mistake, but it’s hard to locate the error. You can output $wp_filter and check… Read more →

Problems Solved for Setting Up Jenkins

by  on  in Tests • 0 Comments

You must set the %JAVA_HOME% and Path environment variables for jenkins. Otherwise you should get errors like:

To do so follow this steps: Create a %JAVA_HOME% var with path to the Java jdk/jre (without /bin) Add %JAVA_HOME% to the Path var. Extend the string with \bin now. Check the result by enter javac in the cmd. If something java… Read more →

toString(), equals() Contract

by  on  in Java • 0 Comments

Any Object is an Object or a child of an Object as described in the Java Language Specification: The class Object is a super class (§8.1) of all other classes. A variable of type Object can hold a reference to the null reference or to any object, whether it is an instance of a class or an array (§10). All… Read more →

wget Seite rippen

by  on  in Common, Tutorials • 0 Comments

Man kann perfekt alle Dateien eines Web-Verzeichnisses mit dem tool wget laden. Hier ein Beispiel:

 

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For – Know the difference

by  on  in Java • 0 Comments

I would like to write some words about the difference of the for loop behaviour. At first you should read the code and notice 2 different for usages. Both should do the same. Do they?

I assumed the first loop would also overwrite the string in the array – as the second one does. But it does not! –… Read more →

Convert bmp to C array

by  on  in C • 0 Comments

If you want to use pictures in C applications you often need to convert them to an array. What you need: Gimp bin2c Create a new gimp file with your target image size. e.g. 200×200 px Open the source image, select all, copy. Switch to your created gim file and paste. Save as bmp. Select your target format in advanced… Read more →