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How to link to apps on the app store
...roductViewController *storeViewController = [[SKStoreProductViewController alloc] init];
storeViewController.delegate = self;
NSNumber *identifier = [NSNumber numberWithInteger:iTunesItemIdentifier];
NSDictionary *parameters = @{ SKStoreProductParameterITunesItemIdentifier:identifier ...
Error handling in C code
...als not retaining their changed values and all) and leaks resources if you allocate any in between the setjmp and longjmp calls. You should be able to do like 30 returns and int-val checks before you recoup the cost of sigjmp/longjmp. Most callstacks don't go that deep especially if you don't go he...
c++11 Return value optimization or move? [duplicate]
... into the data type directly as values rather than hidden behind freestore allocations that allow STL optimizations to obscure the move. (It might be a good change to make to that cppreference.com page, to more directly illustrate value-based moves and copy/move elision.)
– Ad...
How to calculate time in hours between two dates in iOS
...ate: (NSDate *) dateT {
NSMutableString *timeLeft = [[NSMutableString alloc]init];
NSDate *today10am =[NSDate date];
NSInteger seconds = [today10am timeIntervalSinceDate:dateT];
NSInteger days = (int) (floor(seconds / (3600 * 24)));
if(days) seconds -= days * 3600 * 24;
...
How to determine if binary tree is balanced?
...ty should be O(H) where H is the height of the tree. This is because stack allocation for recursion.
– legrass
Aug 15 '15 at 10:43
...
What is the Sign Off feature in Git for?
... “free form” (unstructured) part of the body of the message.
These are token–value (or key–value) pairs typically delimited by a
colon and a space (:␣).
Like I mentioned, “sign-off” is not the only trailer in current practice. See
for example this commit,
which has to do with “Dirty...
Determining 32 vs 64 bit in C++
... Standard says that size of size_t is large enough to hold size of any allocated object in system. Usually it is what you want to know while conditional compiling. If it is not what you want, you could use this snippet with some other type instead of size_t. For instance, it could be void*.
...
Check if a string contains a string in C++
... which is expensive, particularly for longer strings that necessitate heap allocations. Further, say you call CheckSubstring("XYZab", "ab\0\0") - the while loop will end up comparing a to a, b to b, the implicit NUL at the end of the first string to the explicit NUL in the second, then it will read...
What is Weak Head Normal Form?
...o enable memory stats with :set +s. You can then see that foldl' f ends up allocating more thunks than foldl' f'.
– hammar
Jun 2 '17 at 15:34
...
What does yield mean in PHP?
...just a simple array. You can iterate on both.
Also, the first one does not allocate a full array and is therefore less memory-demanding.
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