Scaling an image in Objective-C (Cocoa Framework)

The UIImage class can be used to represent an image. The following snippet scales an image according to a size which is provided with a CGSize parameter.

+ (UIImage *)scale:(UIImage *)image toSize:(CGSize)size
{
    UIGraphicsBeginImageContext(size);
    [image drawInRect:CGRectMake(0, 0, size.width, size.height)];
    UIImage *scaledImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return scaledImage;
}
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