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Make a float only show two decimal places
...try using NSNumberFormatter:
NSNumberFormatter* nf = [[[NSNumberFormatter alloc] init] autorelease];
nf.positiveFormat = @"0.##";
NSString* s = [nf stringFromNumber: [NSNumber numberWithFloat: myFloat]];
You may need to also set the negative format, but I think it's smart enough to figure it out....
How can I get the iOS 7 default blue color programmatically?
...ceToken;
dispatch_once(&onceToken, ^{
UIView* view = [[UIView alloc] init];
systemTintColor = view.tintColor;
});
return systemTintColor;
}
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Installing PG gem on OS X - failure to build native extension
...lem, but having two postgres applications will create conflicts (like port allocation) See also Sayanees' answer at stackoverflow.com/questions/19569031/…
– Epigene
Sep 5 '14 at 9:38
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How do I read a text file of about 2 GB? [duplicate]
...ile will require around 800MB of memory, and the OS may balk at the memory allocation request."
– Emad Aghayi
Aug 24 '16 at 11:30
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Do you (really) write exception safe code? [closed]
...tor's swap, the vector's swap won't throw if the two vectors have the same allocator (i.e., the normal case), but will make copies if they have different allocators. And thus, I assume it could throw in this last case.
So, the original text still holds: Don't ever write a throwing swap, but nobar's ...
Razor-based view doesn't see referenced assemblies
...oup, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">
<section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requireP...
How can I change the image displayed in a UIImageView programmatically?
...one you add to your Resources folder in Xcode.
UIImage *image = [[UIImage alloc] initWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://farm4.static.flickr.com/3092/2915896504_a88b69c9de.jpg"]]];
or
UIImage *image = [UIImage imageNamed: @"cell.png"];
Once you have an Image yo...
How do I replace multiple spaces with a single space in C#?
...contrast, is linear, only builds up a single string (= drastically reduced allocation costs compared to Joel’s code) and furthermore the engine can optimize the hell out of it (to be honest, I doubt the .NET regex is smart enough for this but in theory this regular expression can be implemented s...
is it possible to update UIButton title/text programmatically?
...ollowing:
[self.loginButton
setAttributedTitle:[[NSAttributedString alloc] initWithString:@"Error !!!" attributes:nil]
forState:UIControlStateDisabled];
[self.loginButton setEnabled:NO];
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Removing viewcontrollers from navigation stack
...e this code and enjoy:
NSMutableArray *navigationArray = [[NSMutableArray alloc] initWithArray: self.navigationController.viewControllers];
// [navigationArray removeAllObjects]; // This is just for remove all view controller from navigation stack.
[navigationArray removeObjectAtIndex: 2]; // ...