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What is your favorite C programming trick? [closed]
...
C99 offers some really cool stuff using anonymous arrays:
Removing pointless variables
{
int yes=1;
setsockopt(yourSocket, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int));
}
becomes
setsockopt(yourSocket, SOL_SOCKET, SO_REUSEADDR...
How to throw a C++ exception
...argument& e ) {
// do something
// let someone higher up the call stack handle it if they want
throw;
}
And to catch exceptions regardless of type:
catch( ... ) { };
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How do I get list of methods in a Python class?
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Will this produce a list of all methods in the class (including ones that are inherited from other classes), or will it only list the methods that are explicitly defined in that class?
– Anderson Green
Mar 10 '13 a...
Should one use < or
...tempted to use <=. So:
for (int i=0; i < count; i++) // For 0-based APIs
for (int i=1; i <= count; i++) // For 1-based APIs
I would expect the performance difference to be insignificantly small in real-world code.
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IntelliJ IDEA with Junit 4.7 “!!! JUnit version 3.8 or later expected:”
...ig\options\jdk.table.xml on Windows. Find the node <name value="Android API 28 Platform" /> and set its <annotationsPath> to <root url="jar://$USER_HOME$/Android-SDK/platforms/android-28/data/annotations.zip!/" type="simple" /> . Also ensure the <classPath> node contains plat...
Get the height and width of the browser viewport without scrollbars using jquery?
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$(window).height();
$(window).width();
More info
http://api.jquery.com/height/
http://api.jquery.com/width/
Using jQuery is not essential for getting those values, however. Use
document.documentElement.clientHeight;
document.documentElement.clientWidth;
to get sizes excludin...
Remove not alphanumeric characters from string
...e them.
A backslash in the string needs escaping if it's to be taken literally:
"\\test\\red\\bob\\fred\\new".replace(/\W/g, '')
"testredbobfrednew" // output
Handling malformed strings
If you're not able to escape the input string correctly (why not?), or it's coming from some kind of untruste...
Java, List only subdirectories from a directory, not files
...ussion here:
How to retrieve a list of directories QUICKLY in Java?
Basically:
If you control the file structure, I would try to avoid getting into that situation.
In Java NIO.2, you can use the directories function to return an iterator to allow for greater scaling. The directory stream class i...
What is the worst gotcha in C# or .NET? [closed]
...return MyVar; }
}
Blammo. Your app crashes with no stack trace. Happens all the time.
(Notice capital MyVar instead of lowercase myVar in the getter.)
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“document.getElementByClass is not a function”
...t a function
in older browsers, though, in which case you can provide a fallback implementation if you need to support those older browsers.
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