Online IDE

All online IDE don’t fulfill my requirements of a IDE where I can – checkout git repositories – merge branches with visual support – no git editor integration – no paste in terminal – no git editor integration – no git editor integration – login via github was broken – no registration email received to… Read more →

How to install Scrapy

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

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 →

oBackup superSu errors

If you struggle with installing onandroid script (that is used by oBackup) and get the following error:

You should install superSU by Chainfire (just right from the PlayStore). You might have to update the su binary. After that make sure oBackup uses the right (superSU) instead of the build in superuser app (in case of CM). Also make sure… Read more →

Problems Solved for Setting Up Jenkins

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

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

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


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For – Know the difference

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 →