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How to customize the background/border colors of a grouped table view cell?
...kgroundView.h
//
// Created by Mike Akers on 11/21/08.
// Copyright 2008 __MyCompanyName__. All rights reserved.
//
#import <UIKit/UIKit.h>
typedef enum {
CustomCellBackgroundViewPositionTop,
CustomCellBackgroundViewPositionMiddle,
CustomCellBackgroundViewPositionBottom,
...
Local variables in nested functions
...s to the function, with the code using an index to reference each cell. pet_function thus has one free variable (cage) which is then referenced via a closure cell, index 0. The closure itself points to the local variable cage in the get_petters function.
When you actually call the function, that cl...
Linux - Replacing spaces in the file names
...
This should do it:
for file in *; do mv "$file" `echo $file | tr ' ' '_'` ; done
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Thread Safety in Python's dictionary
...mic operations, there are corner cases where they aren’t atomic (e.g. if __hash__ or __eq__ are implemented as Python methods) and their atomicity should not be relied upon. Neither should you rely on atomic variable assignment (since this in turn depends on dictionaries).
Use the Queue module's Q...
Running python script inside ipython
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from within the directory of "my_script.py" you can simply do:
%run ./my_script.py
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Transposing a NumPy array
...range(10) then a is array([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]) as produced by a.__repr__(). This is a 1-dimensional (i.e. a.ndim --> 1) vector as indicated by the square brackets []. The array( ... ) is not seen when you do either print(a) or a.__str__().
– dtlussier
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Check if PHP session has already started
...om a page that doesn't have session started. Therefore when I have session_start() on this script I sometimes get the error message for "session already started". For that I've put these lines:
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Targeting .NET Framework 4.5 via Visual Studio 2010
...en your project in VS2010.
Create a text file in your project named Compile_4_5_CSharp.targets with the following contents. (Or just download it here - Make sure to remove the ".txt" extension from the file name):
<Project DefaultTargets="Build"
xmlns="http://schemas.microsoft.com/developer/ms...
What is the _snowman param in Ruby on Rails 3 forms for?
...n Ruby on Rails 3 (currently using Beta 4), I see that when using the form_tag or form_for helpers there is a hidden field named _snowman with the value of ☃ ( Unicode \x9731) showing up.
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Get name of caller function in PHP?
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See debug_backtrace - this can trace your call stack all the way to the top.
Here's how you'd get your caller:
$trace = debug_backtrace();
$caller = $trace[1];
echo "Called by {$caller['function']}";
if (isset($caller['class']))
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