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iOS 7 parallax effect in my view controller
...atingMotionEffect *verticalMotionEffect =
[[UIInterpolatingMotionEffect alloc]
initWithKeyPath:@"center.y"
type:UIInterpolatingMotionEffectTypeTiltAlongVerticalAxis];
verticalMotionEffect.minimumRelativeValue = @(-10);
verticalMotionEffect.maximumRelativeValue = @(10);
// Set hor...
How to use single storyboard uiviewcontroller for multiple subclass
...... This simply changes the isa pointer of the given pointer and doesn't reallocate memory to accommodate for e.g. different properties. One indicator for this is that the pointer to self doesn't change. So inspection of the object (e.g. reading _ivar / property values) after object_setClass can cau...
Pointers vs. values in parameters and return values
...y value is actually more efficient, because it avoids cache misses or heap allocations.
So, Go Wiki's code review comments page suggests passing by value when structs are small and likely to stay that way.
If the "large" cutoff seems vague, it is; arguably many structs are in a range where either a ...
How do I return multiple values from a function in C?
...d a size_t for the length unless it's absolutely vital for the function to allocate it's own string and/or return NULL.
– Chris Lutz
Apr 12 '10 at 6:14
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String, StringBuffer, and StringBuilder
...copied, but this means a potentially much larger amount of data may remain allocated).
You use StringBuilder when you need to create a mutable character sequence, usually to concatenate several character sequences together.
You use StringBuffer in the same circumstances you would use StringBuilder, ...
Cross Domain Form POSTing
...eby preventing javascript to update document with forms that have security tokens from other url).
– Mohsenme
May 7 '15 at 22:46
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What is private bytes, virtual bytes, working set?
...red DLLs). But - here's the catch - they don't necessarily exclude memory allocated by those files. There is no way to tell whether a change in private bytes was due to the executable itself, or due to a linked library. Private bytes are also not exclusively physical memory; they can be paged to ...
Programmatically open Maps app in iOS 6
...ordinate2DMake(16.775, -3.009);
MKPlacemark *placemark = [[MKPlacemark alloc] initWithCoordinate:coordinate
addressDictionary:nil];
MKMapItem *mapItem = [[MKMapItem alloc] initWithPlacemark:placemark];
[mapItem setName:@"My Place"];
// Pas...
Php multiple delimiters in explode
...ork as php docu says: strtok() splits a string (str) into smaller strings (tokens), with each token being delimited by any character from token. and 'vs' contains two characters
– mikewasmike
Dec 17 '15 at 19:03
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How can I clear or empty a StringBuilder? [duplicate]
...
Two ways that work:
Use stringBuilderObj.setLength(0).
Allocate a new one with new StringBuilder() instead of clearing the buffer.
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