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In Objective-C why should I check if self = [super init] is not nil?
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For example:
[[NSData alloc] initWithContentsOfFile:@"this/path/doesn't/exist/"];
[[NSImage alloc] initWithContentsOfFile:@"unsupportedFormat.sjt"];
[NSImage imageNamed:@"AnImageThatIsntInTheImageCache"];
... and so on. (No...
What's the proper way to install pip, virtualenv, and distribute for Python?
... this without installing anything into python itself.
You don't need sudo or any privileges.
You don't need to edit any files.
Install virtualenv into a bootstrap virtual environment. Use the that virtual environment to create more. Since virtualenv ships with pip and distribute, you get everythi...
ImportError: No module named MySQLdb
I am referring the following tutorial to make a login page for my web application.
http://code.tutsplus.com/tutorials/intro-to-flask-signing-in-and-out--net-29982
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Searching if value exists in a list of objects using Linq
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LINQ defines an extension method that is perfect for solving this exact problem:
using System.Linq;
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bool has = list.Any(cus => cus.FirstName == "John");
make sure you reference System.Core.dll, that's where LINQ lives.
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How can I round down a number in Javascript?
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Using Math.floor() is one way of doing this.
More information: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/floor
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How can I disable ARC for a single file in a project?
...e.g., in unit tests and mock objects) where the rules of ARC are a little more fragile right now. I recall hearing that there was a way to disable ARC on a per-file basis, though I have been unable to find this option.
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Parsing XML with namespace in Python via 'ElementTree'
...ry. This is not documented very well:
namespaces = {'owl': 'http://www.w3.org/2002/07/owl#'} # add more as needed
root.findall('owl:Class', namespaces)
Prefixes are only looked up in the namespaces parameter you pass in. This means you can use any namespace prefix you like; the API splits off th...
How do you copy and paste into Git Bash
... and a lot of other feature are implemented in conhost.exe so they should work with every console utility on Windows. (You have to enable Properties -> Option tab -> Quick Edit Mode)
Ref: http://blogs.windows.com/buildingapps/2014/10/07/console-improvements-in-the-windows-10-technical-preview...
How do I use JDK 7 on Mac OSX?
...ke to use the WatchService API as mentioned in this link:
http://download.oracle.com/javase/tutorial/essential/io/notification.html
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How to stop Visual Studio from “always” checking out solution files?
For apparently no reason, every time I open my solution, Visual Studio checks the sln file out.
8 Answers
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