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RAII and smart pointers in C++
...ay to describe this limitation in Java or C# is because there is no way to allocate on the stack. C# allows stack allocation through a special keyword however, you lose type saftey.
– ApplePieIsGood
Dec 28 '08 at 14:25
...
How to set the UITableView Section title programmatically (iPhone/iPad)?
...ion
{
UIView *sectionHeaderView;
sectionHeaderView = [[UIView alloc] initWithFrame:
CGRectMake(0, 0, tableView.frame.size.width, 120.0)];
sectionHeaderView.backgroundColor = kColor(61, 201, 247);
UILabel *headerLabel = [[UILabel alloc] initWithFra...
Can “using” with more than one resource cause a resource leak?
...What happens if font4 = new Font() throws after the unmanaged resource was allocated by the constructor but before the ctor returns and fills in font4 with the reference?
Let me make that a little bit more clear. Suppose we have:
public sealed class Foo : IDisposable
{
private int handle = 0;...
How do I get hour and minutes from NSDate?
...ateComponents:
Obj-C:
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"<your date format goes here"];
NSDate *date = [dateFormatter dateFromString:string1];
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [calend...
boundingRectWithSize for NSAttributedString returning wrong size
...e size that will have the proper height.
UITextView *view=[[UITextView alloc] initWithFrame:CGRectMake(0, 0, width, 10)];
view.text=text;
CGSize size=[view sizeThatFits:CGSizeMake(width, CGFLOAT_MAX)];
height=size.height;
If you are calculating the size in a while loop, do no forg...
How to change height of grouped UITableView header?
...erView.frame;
frame.size.height = 1;
UIView *headerView = [[UIView alloc] initWithFrame:frame];
[self.tableView setTableHeaderView:headerView];
}
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What is a StackOverflowError?
...
Parameters and local variables are allocated on the stack (with reference types, the object lives on the heap and a variable in the stack references that object on the heap). The stack typically lives at the upper end of your address space and as it is used up...
Execute a terminal command from a Cocoa app
...;
NSFileHandle *file = pipe.fileHandleForReading;
NSTask *task = [[NSTask alloc] init];
task.launchPath = @"/usr/bin/grep";
task.arguments = @[@"foo", @"bar.txt"];
task.standardOutput = pipe;
[task launch];
NSData *data = [file readDataToEndOfFile];
[file closeFile];
NSString *grepOutput = [[NSS...
How to Deal with Temporary NSManagedObject instances?
...ectContext:myMOC];
NSManagedObject *unassociatedObject = [[NSManagedObject alloc] initWithEntity:entity insertIntoManagedObjectContext:nil];
Then when you want to save it:
[myMOC insertObject:unassociatedObject];
NSError *error = nil;
if (![myMoc save:&error]) {
//Respond to the error
}
...
How to save picture to iPhone photo library?
... AssetsLibrary framework
ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
[library writeImageToSavedPhotosAlbum:[image CGImage] orientation:(ALAssetOrientation)[image imageOrientation] completionBlock:^(NSURL *assetURL, NSError *error){
if (error) {
// TODO: error handlin...