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Git for beginners: The definitive practical guide
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How do you create a new project/repository?
A git repository is simply a directory containing a special .git directory.
This is different from "centralised" version-control systems (like subversion), where a "repository" is hosted on a remote server, which you che...
How to run a JAR file
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You need to specify a Main-Class in the jar file manifest.
Oracle's tutorial contains a complete demonstration, but here's another one from scratch. You need two files:
Test.java:
public class Test
{
public static void main(String[] args)
{
System.out.println("Hello...
How do I get a reference to the app delegate in Swift?
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The other solution is correct in that it will get you a reference to the application's delegate, but this will not allow you to access any methods or variables added by your subclass of UIApplication, like your managed object context. To resolve th...
Best design for a changelog / auditing database table? [closed]
I need to create a database table to store different change log/auditing
(when something was added, deleted, modified, etc). I don't need to store particularly detailed info, so I was thinking something along the lines of:
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How to trigger a build only if changes happen on particular set of files
How do I tell Jenkins/Hudson to trigger a build only for changes on a particular project in my Git tree?
8 Answers
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Deleting all pending tasks in celery / rabbitmq
How can I delete all pending tasks without knowing the task_id for each task?
9 Answers
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How can I combine hashes in Perl?
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Quick Answer (TL;DR)
%hash1 = (%hash1, %hash2)
## or else ...
@hash1{keys %hash2} = values %hash2;
## or with references ...
$hash_ref1 = { %$hash_ref1, %$hash_ref2 };
Overview
Context: Perl 5.x
Problem: The user wishes to merge two hashes1 into a single ...
Truncating floats in Python
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First, the function, for those who just want some copy-and-paste code:
def truncate(f, n):
'''Truncates/pads a float f to n decimal places without rounding'''
s = '{}'.format(f)
if 'e' in s or 'E' in s:
return '{0:.{1}f}'.form...
What are Flask Blueprints, exactly?
...have read the official Flask documentation on Blueprints and even one or two blog posts on using them.
4 Answers
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What makes a keychain item unique (in iOS)?
... source files from Apple, see Schema.m4, KeySchema.m4 and SecItem.cpp):
For a keychain item of class kSecClassGenericPassword, the primary key is the combination of
kSecAttrAccount and kSecAttrService.
For a keychain item of class kSecClassInternetPassword, the primary key is the combination of k...