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How to convert an NSString into an NSNumber
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Use an NSNumberFormatter:
NSNumberFormatter *f = [[NSNumberFormatter alloc] init];
f.numberStyle = NSNumberFormatterDecimalStyle;
NSNumber *myNumber = [f numberFromString:@"42"];
If the string is not a valid number, then myNumber will be nil. If it is a valid number, then you now have all of...
Best dynamic JavaScript/JQuery Grid [closed]
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@MattW Yes i like jQuery Grid, Adding data is really easy. Also you can make every column sortable just by setting a flag. My requirements list was really big. But few thing I build myself and for few cases I'm using jQuery Grid. It got cool and easy API also. At this poin...
Cleanest way to toggle a boolean variable in Java?
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That's...really obvious—oops! Don't know why I didn't think of it. Thanks.
– Kevin Griffin
Oct 22 '08 at 2:46
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Is there a /dev/null on Windows?
...file.
(I believe the same is true if you try to create a file programmatically, but I haven't tried it.)
In PowerShell, you want $null:
echo 1 > $null
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Javascript: formatting a rounded number to N decimals
...9999998.toFixed(4) correctly returns 1.0245.
– Matt Ball
Mar 13 '12 at 14:40
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@MarkTomlin: Then ...
.htaccess rewrite to redirect root URL to subdirectory
...as surprised that nobody mentioned this:
RedirectMatch ^/$ /store/
Basically, it redirects the root and only the root URL.
The answer originated from this link
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How to check if a variable is not null?
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This check is actually not safe. If myvar is 0, false or any other falsy value the test will fail (if you only intend to check for not null). So only use this to check for not null if the variable can never have another falsy value.
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Android: remove notification from notification bar
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This is quite simple. You have to call cancel or cancelAll on your NotificationManager. The parameter of the cancel method is the ID of the notification that should be canceled.
See the API: http://developer.android.com/reference/android/app/NotificationManag...
Xcode 4 - build output directory
...sdflkjqwergoobledygook. Since I'm building from a script, I'd like to actually find the build (so I can package it and send via TestFlight :) How do I determine which of the many MyAppName-xxxx-s is the right one? Thanks!
– Olie
Oct 2 '14 at 4:02
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How and why does 'a'['toUpperCase']() in JavaScript work?
...lue the variable bar contains. So using the foo[] notation instead of foo. allows you to use a dynamic property name.
Let's have a look at callMethod:
First of all, it returns a function that takes obj as its argument. When that function is executed it will call method on that object. So the giv...