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Command not found when using sudo
...ied
In order to run a script the file must have an executable permission bit set.
In order to fully understand Linux file permissions you can study the documentation for the chmod command. chmod, an abbreviation of change mode, is the command that is used to change the permission settings of a fil...
What is Serialization?
I am getting started with Object-Oriented Programming (OOP) and would like to know: what is the meaning of serialization in OOP parlance?
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Any open source alternatives to balsamiq mockup [closed]
As the title reads, I'm looking for open source alternatives to balsamiq mockup for prototyping. Anyone knows of an equally good alternative that's open source or basically freeware.
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class
...nt self object (which inside a class or module body is the class or module itself). Usually, this is used to define class/module ("static") methods:
class String
class << self
def value_of obj
obj.to_s
end
end
end
String.value_of 42 # => "42"
This can also be written...
Why are C# interface methods not declared abstract or virtual?
C# methods in interfaces are declared without using the virtual keyword, and overridden in the derived class without using the override keyword.
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How can I escape square brackets in a LIKE clause?
I am trying to filter items with a stored procedure using like. The column is a varchar(15). The items I am trying to filter have square brackets in the name.
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Shortcut for creating single item list in C#
In C#, is there an inline shortcut to instantiate a List with only one item.
13 Answers
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Difference between array_push() and $array[] =
... overheads to the call, as PHP has to look up the function reference, find its position in memory and execute whatever code it defines.
Using $arr[] = 'some value'; does not require a function call, and implements the addition straight into the data structure. Thus, when adding a lot of data it is ...
The data-toggle attributes in Twitter Bootstrap
What does data-toggle attributes do in Twitter Bootstrap? I couldn't find an answer in Bootstrap API.
10 Answers
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What exactly is metaprogramming?
...latform . Some comments in the article refer to metaprogramming as the ability to generate code (perhaps on the fly).
7 An...