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Malloc vs new — different padding
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IIRC there's one picky point. malloc is guaranteed to return an address aligned for any standard type. ::operator new(n) is only guaranteed to return an address aligned for any standard type no larger than n, and if T isn't a character type then new T[n] i...
Does PHP have threading?
...y, PHP can multi-thread for those wishing to try it.
The first release of PHP4, 22 May 2000, PHP was shipped with a thread safe architecture - a way for it to execute multiple instances of it's interpreter in separate threads in multi-threaded SAPI ( Server API ) environments. Over the last 13 year...
Applications are expected to have a root view controller at the end of application launch
... make sure self.window is initialized like self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
– Raptor
Feb 13 '12 at 12:07
1
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Python - Create a list with initial capacity
...bject %d" % ( i, )
result.append(message)
return result
def doAllocate( size=10000 ):
result=size*[None]
for i in range(size):
message= "some unique object %d" % ( i, )
result[i]= message
return result
Results. (evaluate each function 144 times and average ...
UITableView backgroundColor always gray on iPad
...TableView setBackgroundView:nil];
[myTableView setBackgroundView:[[[UIView alloc] init] autorelease]];
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How do I remove the Devise route to sign up?
...giving you this problem:
Started GET "/users/invitation/accept?invitation_token=xxxxxxx" for 127.0.0.1
Processing by Devise::InvitationsController#edit as HTML
Parameters: {"invitation_token"=>"6Fy5CgFHtjWfjsCyr3hG"}
[Devise] Could not find devise mapping for path "/users/invitation/accept? ...
Are tuples more efficient than lists in Python?
...les can be reused instead of copied.
3) Tuples are compact and don't over-allocate.
4) Tuples directly reference their elements.
Tuples can be constant folded
Tuples of constants can be precomputed by Python's peephole optimizer or AST-optimizer. Lists, on the other hand, get built-up from scra...
How to manually set an authenticated user in Spring Security / SpringMVC
...SecurityContextHolder is not updated
UsernamePasswordAuthenticationToken token = new UsernamePasswordAuthenticationToken(username, password);
token.setDetails(new WebAuthenticationDetails(request));
Authentication authentication = this.authenticationProvider.authenticate(toke...
presentViewController and displaying navigation bar
...troller you want:
MyViewController *myViewController = [[MyViewController alloc] initWithNibName:nil bundle:nil];
UINavigationController *navigationController =
[[UINavigationController alloc] initWithRootViewController:myViewController];
//now present this navigation controller modally
[sel...
General guidelines to avoid memory leaks in C++ [closed]
...rams? How do I figure out who should free memory that has been dynamically allocated?
29 Answers
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