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How to use double or single brackets, parentheses, curly braces
... shell builtins.
The double bracket, which is a shell keyword, enables additional functionality. For example, you can use && and || instead of -a and -o and there's a regular expression matching operator =~.
Also, in a simple test, double square brackets seem to evaluate quite a lot quicke...
Data access object (DAO) in Java
...through a document and I came across a term called DAO . I found out that it is a Data Access Object. Can someone please explain me what this actually is?
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onKeyPress Vs. onKeyUp and onKeyDown
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edited Mar 14 at 10:57
Mike B.
9,7541717 gold badges6868 silver badges108108 bronze badges
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Editing in the Chrome debugger
How do I "dynamically" edit JavaScript code in the Chrome debugger? It's not for me, so I don't have access to the source file. I want to edit code and see what effects they have on the page, in this case stopping an animation from queuing up a bunch of times.
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Logical Operators, || or OR?
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edited May 13 '11 at 22:24
answered May 13 '11 at 22:17
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Compare floats in php
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If you do it like this they should be the same. But note that a characteristic of floating-point values is that calculations which seem to result in the same value do not need to actually be identical. So if $a is a literal .17 and $b ...
std::string to float or double
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std::string num = "0.6";
double temp = ::atof(num.c_str());
Does it for me, it is a valid C++ syntax to convert a string to a double.
You can do it with the stringstream or boost::lexical_cast but those come with a performance penalty.
Ahaha you have a Qt project ...
QString winOpacit...
SQL to LINQ Tool [closed]
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Edit 7/17/2020: I cannot delete this accepted answer. It used to be good, but now it isn't. Beware really old posts, guys. I'm removing the link.
[Linqer] is a SQL to LINQ converter tool. It helps you to learn LINQ and convert ...
Best C++ Code Formatter/Beautifier
... formatting tool.
clang-format is a powerful command line tool bundled with the clang compiler which handles even the most obscure language constructs in a coherent way.
It can be integrated with Visual Studio, Emacs, Vim (and others) and can format just the selected lines (or with git/svn to fo...
What's the use of do while(0) when we define a macro? [duplicate]
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You can follow it with a semicolon and make it look and act more like a function.
It also works with if/else clauses properly then.
Without the while(0), your code above would not work with
if (doit)
INIT_LIST_HEAD(x);
else
displ...