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How do you create optional arguments in php?
...ust be a constant expression. It can't be a variable or a function call.
If you need this functionality however:
function foo($foo, $bar = false)
{
if(!$bar)
{
$bar = $foo;
}
}
Assuming $bar isn't expected to be a boolean of course.
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Is there a regular expression to detect a valid regular expression?
...ble to detect a valid regular expression with another regular expression? If so please give example code below.
8 Answers
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Why do C and C++ compilers allow array lengths in function signatures when they're never enforced?
...g arrays to functions.
Actually it is not possible to pass an array in C. If you write syntax that looks like it should pass the array, what actually happens is that a pointer to the first element of the array is passed instead.
Since the pointer does not include any length information, the conten...
How does one change the language of the command line interface of Git?
...t variable LC_ALL is set, which has precedence over LANG. See the UNIX Specification - Environment Variables for further explanation.
# Set Git language to English
#alias git='LC_ALL=en_US git'
alias git='LC_ALL=en_GB git'
In case you added these lines to ~/.bashrc the alias will be defined when ...
Converting A String To Hexadecimal In Java
...
@Kaleb Have you idea if possible to convert resulted String back? If, yes, can you give me some hints? Thanks!
– artaxerxe
Apr 11 '12 at 10:06
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How to grant remote access permissions to mysql server for user?
If I do SHOW GRANTS in my mysql database I get
11 Answers
11
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How can I generate UUID in C#
...
@Uma Shankar Subramani: GUID = Globally Unique Identifier, UUID = Universally Unique Identifier. Different words for the same concept.
– Tudor
Dec 12 '11 at 17:58
...
Could not load file or assembly … The parameter is incorrect
...sername\AppData\Local\Temp\Temporary ASP.NET Files in windows 7)
and see if the error still happens
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Jump to function definition in vim
...p is C-like enough that "Exuberant ctags" should work with it. Don't know if it has a python mode.
– Paul Tomblin
Mar 11 '09 at 18:38
5
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Design Patterns: Abstract Factory vs Factory Method
...ct Factory
Produces a Family of Types that are related. It is noticeably different than a Factory Method as it has more than one method of types it produces. (This is complicated refer to next diagram for better real-life example).
Example From The .NET Framework
DbFactoriesProvider is a Simple...