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How to find difference between two Joda-Time DateTimes in minutes
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answered Oct 12 '12 at 4:01
alfredadayalfredaday
1,9421515 silver badges1414 bronze badges
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Left-pad printf with spaces
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If you want the word "Hello" to print in a column that's 40 characters wide, with spaces padding the left, use the following.
char *ptr = "Hello";
printf("%40s\n", ptr);
That will give you 35 spaces, then the word "Hello". This is how you format stuff when you know how wide you ...
Is it possible to assign numeric value to an enum in Java?
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public enum EXIT_CODE {
A(104), B(203);
private int numVal;
EXIT_CODE(int numVal) {
this.numVal = numVal;
}
public int getNumVal() {
return numVal;
}
}
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Sass and combined child selector
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edited Apr 30 '15 at 22:58
Continuity8
1,41322 gold badges1414 silver badges2828 bronze badges
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Difference between CMAKE_CURRENT_SOURCE_DIR and CMAKE_CURRENT_LIST_DIR
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140
The variables CMAKE_CURRENT_SOURCE_DIR and CMAKE_CURRENT_LIST_DIR may refer to different directo...
If string is empty then return some default value
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David PhillipsDavid Phillips
9,40544 gold badges3636 silver badges5151 bronze badges
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How to check if std::map contains a key without doing insert?
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310
Use my_map.count( key ); it can only return 0 or 1, which is essentially the Boolean result you ...
Create a tar.xz in one command
...member to man tar :)
tar cfJ <archive.tar.xz> <files>
Edit 2015-08-10:
If you're passing the arguments to tar with dashes (ex: tar -cf as opposed to tar cf), then the -f option must come last, since it specifies the filename (thanks to @A-B-B for pointing that out!). In that case, th...
How to add a jar in External Libraries in android studio
...epth answer to this question. This method is suitable for Android Studio 1.0.0 and above.
STEPS
First switch your folder structure from Android to Project.
Now search for the libs folder inside app - build folder.
Once you have pasted the .jar file inside libs folder. Right click o...
Is it possible to prevent an NSURLRequest from caching data or remove cached data following a reques
... cachePolicy:NSURLRequestReloadIgnoringCacheData
timeoutInterval:60.0];
Then create the connection
NSURLConnection *conn = [NSURLConnection connectionWithRequest:request
delegate:self];
and implement the connection:willCacheResponse: method on the delegate. Just returning nil sh...