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Should I instantiate instance variables on declaration or in the constructor?
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There is no difference - the instance variable initialization is actually put in the constructor(s) by the compiler.
The first variant is more readable.
You can't have exception handling with the first variant.
There is additionally the initialization block, which is as well put in the constru...
Configuring Log4j Loggers Programmatically
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You can add/remove Appender programmatically to Log4j:
ConsoleAppender console = new ConsoleAppender(); //create appender
//configure the appender
String PATTERN = "%d [%p|%c|%C{1}] %m%n";
console.setLayout(new PatternLayout(PATTERN));
console.setThresh...
Find all files with name containing string
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Use find:
find . -maxdepth 1 -name "*string*" -print
It will find all files in the current directory (delete maxdepth 1 if you want it recursive) containing "string" and will print it on the screen.
If you want to avoid file containing ':', you can type:
find . -maxdepth 1 -name "*string*...
How to unstage large number of files without deleting the content
I accidentally added a lot of temporary files using git add -A
9 Answers
9
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Create a submodule repository from a folder and keep its git commit history
...ommit it
git filter-branch --subdirectory-filter <directory 1> -- --all
You should now have a git repository with the files from directory 1 in your repo's root with all related commit history.
Step 4
Create your online repository and push your new repository!
git remote add origin <...
How to replace all strings to numbers contained in each string in Notepad++?
I'm trying to find all values with following pattern :
5 Answers
5
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Access event to call preventdefault from custom function originating from onclick attribute of tag
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ok, I see all I had to do is to put my parameter second myfunc(event, {a:123, b:"asdas"})
– Omu
Dec 23 '11 at 10:01
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What are WSDL, SOAP and REST?
What is WSDL ? How is it related to SOAP ? Where does REST fit in all of that?
10 Answers
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Get users by name property using Firebase
...Previously, Firebase required you to generate your own indexes or download all data at a location to find and retrieve elements that matched some child attribute (for example, all users with name === "Alex").
In October 2014, Firebase rolled out new querying functionality via the orderByChild() met...
git ignore all files of a certain type, except those in a specific subfolder
... my case, I realized that I want to ignore nothing in my spec directory at all. So I am able to get away with a very simple !spec. Works like a charm.
– Alex Wayne
Jan 6 '11 at 23:31
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