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How do I check if a string contains another string in Objective-C?
..., 0} if the "haystack" does not contain the "needle".
And if you're on iOS 8 or OS X Yosemite, you can now do: (*NOTE: This WILL crash your app if this code is called on an iOS7 device).
NSString *string = @"hello bla blah";
if ([string containsString:@"bla"]) {
NSLog(@"string contains bla!");...
How to hide first section header in UITableView (grouped style)
...e design of table views using the grouped style changed considerably with iOS 7, I would like to hide (or remove) the first section header. So far I haven't managed to achieve it.
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Where does Vagrant download its .box files to?
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As mentioned in the docs, boxes are stored at:
Mac OS X and Linux: ~/.vagrant.d/boxes
Windows: C:/Users/USERNAME/.vagrant.d/boxes
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MySQL Server has gone away when importing large sql file
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As stated here:
Two most common reasons (and fixes) for the MySQL server has gone away
(error 2006) are:
Server timed out and closed the connection. How to fix:
check that wait_timeout variable in your mysqld’s my.cnf configurat...
How to recursively find and list the latest modified files in a directory with subdirectories and ti
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On Mac OS X it's not GNU's stat so command fails. You have to brew install coreutils and use gstat instead of stat
– CharlesB
Mar 28 '13 at 10:56
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Unix shell script find out which directory the script file resides?
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The original post contains the solution (ignore the responses, they don't add anything useful). The interesting work is done by the mentioned unix command readlink with option -f. Works when the script is called by an absolute as well as b...
Android - How To Override the “Back” button so it doesn't Finish() my Activity?
...verride the back button (that just doesn't seem like a good idea - Android OS defines that behavior, why change it?), but to use the Activity Lifecycle and persist your settings/data in the onSaveInstanceState(Bundle) event.
@Override
onSaveInstanceState(Bundle frozenState) {
frozenState.putSer...
Why are elementwise additions much faster in separate loops than in a combined loop?
Suppose a1 , b1 , c1 , and d1 point to heap memory and my numerical code has the following core loop.
10 Answers
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rsync error: failed to set times on “/foo/bar”: Operation not permitted
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If /foo/bar is on NFS (or possibly some FUSE filesystem), that might be the problem.
Either way, adding -O / --omit-dir-times to your command line will avoid it trying to set modification times on directories.
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What's the fundamental difference between MFC and ATL?
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I think the answer to your question is mostly historical, if you look back at how the two libraries originated and evolved through time.
The short answer is, if you are not doing anything "fancy", use ATL. It's great for simple user interfaces with COM thrown in....