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Find out a Git branch creator
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In case there has not been any commit on the branch and if it has been created from master, the "author of the branch" is completely unrelated to that branch but just the last committer on master. If you pull in changes from master and it's a fast-forward, it is again the last...
How do I make a JAR from a .java file?
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Open a command prompt.
Go to the directory where you have your .java files
Create a directory build
Run java compilation from the command line
javac -d ./build *.java
if there are no errors, in the build directory you should have ...
Make child visible outside an overflow:hidden parent
...e overflow:hidden is set on parent containers in order to allow it to expand with the height of their floating children.
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How to comment out a block of Python code in Vim
...rst column of the first line you want to comment.
Step 2: Press: Ctrl+v and select the lines you want to comment:
Step 3: Shift-I#space (Enter Insert-at-left mode, type chars to insert. The selection will disappear, but all lines within it will be modified after Step 4.)
Step 4: Esc
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Styling multi-line conditions in 'if' statements? [closed]
...4 spaces on your second conditional line. Maybe use:
if (cond1 == 'val1' and cond2 == 'val2' and
cond3 == 'val3' and cond4 == 'val4'):
do_something
Also, don't forget the whitespace is more flexible than you might think:
if (
cond1 == 'val1' and cond2 == 'val2' and
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How to use Git?
... I have zero experience with any kind of version control system. My understanding is somehow they make distribution of projects easier.
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Ignoring new fields on JSON objects using Jackson [duplicate]
...ng Jackson JSON library to convert some JSON objects to POJO classes on an android application. The problem is, the JSON objects might change and have new fields added while the application is published, but currently it will break even when a simple String field is added, which can safely be ignore...
Is there a label/goto in Python?
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No, Python does not support labels and goto, if that is what you're after. It's a (highly) structured programming language.
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How to drop a PostgreSQL database if there are active connections to it?
...s will drop existing connections except for yours:
Query pg_stat_activity and get the pid values you want to kill, then issue SELECT pg_terminate_backend(pid int) to them.
PostgreSQL 9.2 and above:
SELECT pg_terminate_backend(pg_stat_activity.pid)
FROM pg_stat_activity
WHERE pg_stat_activity.datn...
MongoDB and “joins” [duplicate]
...ll only be evaluated when needed. A join (in a SQL database) on the other hand will resolve relationships and return them as if they were a single table (you "join two tables into one").
You can read more about DBRef here:
http://docs.mongodb.org/manual/applications/database-references/
There are ...