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Difference between \w and \b regular expression meta characters
Can anyone explain the difference between \b and \w regular expression metacharacters? It is my understanding that both these metacharacters are used for word boundaries. Apart from this, which meta character is efficient for multilingual content?
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Favicon dimensions? [duplicate]
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Short answer
The favicon is supposed to be a set of 16x16, 32x32 and 48x48 pictures in ICO format. ICO format is different than PNG. Non-square pictures are not supported.
To generate the favicon, for many reasons explained below, I advise you to use this favicon generator. Full disclosure...
How to fix “Headers already sent” error in PHP
...ically
Previous error messages or notices
Intentional:
print, echo and other functions producing output
Raw <html> sections prior <?php code.
Why does it happen?
To understand why headers must be sent before output it's necessary
to look at a typical HTTP
response. PHP scripts ...
Why aren't variable-length arrays part of the C++ standard?
... space available, isn't good. The argument is, if you know the size beforehand, you can use a static array. And if you don't know the size beforehand, you will write unsafe code.
C99 VLAs could provide a small benefit of being able to create small arrays without wasting space or calling constructo...
Does the use of the “Async” suffix in a method name depend on whether the 'async' modifier is used?
... is ambiguous even from Microsoft documentation:
In Visual Studio 2012 and the .NET Framework 4.5, any method that is
attributed with the async keyword (Async in Visual Basic) is
considered an asynchronous method, and the C# and Visual Basic
compilers perform the necessary transformations ...
Why does C# disallow readonly local variables?
...into the CLR/CLI initonly opcode. This flag can only be applied to fields and has no meaning for a local. In fact, applying it to a local will likely produce unverifiable code.
This doesn't mean that C# couldn't do this. But it would give two different meanings to the same language construct. T...
How can I strip first and last double quotes?
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If the quotes you want to strip are always going to be "first and last" as you said, then you could simply use:
string = string[1:-1]
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MySQL indexes - what are the best practices?
...or selecting using a WHERE clause but sometimes it doesn't seem so black and white.
7 Answers
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Quick-and-dirty way to ensure only one instance of a shell script is running at a time
What's a quick-and-dirty way to make sure that only one instance of a shell script is running at a given time?
40 Answers
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What is “lifting” in Haskell?
I don't understand what "lifting" is. Should I first understand monads before understanding what a "lift" is? (I'm completely ignorant about monads, too :) Or can someone explain it to me with simple words?
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