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Best way to serialize an NSData into a hexadeximal string
... const unsigned char *dataBuffer = self.bytes;
char *chars = malloc(sizeof(char) * (bytesCount * 2 + 1));
if (chars == NULL) {
// malloc returns null if attempting to allocate more memory than the system can provide. Thanks Cœur
[NSException raise...
Why is a boolean 1 byte and not 1 bit of size?
...ovide sub-byte pointers as an extension, but "ordinary" objects like bool, allocated in ordinary ways, have to do what the standard says.
– Steve Jessop
Jan 8 '11 at 15:43
...
使用std::string作为std::map的key出错解决 - C/C++ - 清泛网 - 专注C/C++及内核技术
...aits=std::_Tmap_traits<std::string,std::string,std::less<std::string>,std::allocator<std::pair<const std::string,std::string>>,false>
1> ]
1> c:\users\fstech\documents\visual studio 2012\projects\cpzj\cpzj\cpzj.cpp(95): 参见对正在编译的类 模板 实例化“std::map<_Kty...
How does an underscore in front of a variable in a cocoa objective-c class work?
...he value to use. This helps keep your used memory low (and also helps with alloc and dealloc of memory, which is important in the absence of 'garbage collection' which you'll find in Java)
– David Sigley
Aug 30 '13 at 13:34
...
How can I programmatically get the MAC address of an iphone
...
errorFlag = @"sysctl mgmtInfoBase failure";
else
{
// Alloc memory based on above call
if ((msgBuffer = malloc(length)) == NULL)
errorFlag = @"buffer allocation failure";
else
{
// Get system information, store in buffer
if (sysctl(mgmtI...
Easy way to dismiss keyboard?
...illHideNotification object:nil];
tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self
action:@selector(didTapAnywhere:)];
Add the keyboard show/hide responders. There you add and remove the TapGestureRecognizer to the UIView that should dismiss the keyboard when tapped. Note: You ...
Convert from enum ordinal to enum type
...t... you know - the C programmer inside me screams in pain seeing that you allocate a full-blown HashMap and perform lookups inside it all of it JUST to essentially manage 4 constants: spades, hearts, diamonds and clubs! A C programmer would allocate 1 byte for each: 'const char CLUBS=0;' etc... Ye...
Finding JavaScript memory leaks with Chrome
...napshot.
Repeat the same stuff.
Take another heap snapshot.
Filter objects allocated between Snapshots 1 and 2 in Snapshot 3's "Summary" view.
For your example, I have adapted the code to show this process (you can find it here) delaying the creation of the Backbone View until the click event of t...
How to handle Objective-C protocols that contain properties?
... char * argv[])
{
@autoreleasepool {
Person *duncan=[[Person alloc]initConforming];
duncan.firstname=@"Duncan";
duncan.lastname=@"Smith";
[Viewer printLargeDescription:duncan];
Serial *x890tyu=[[Serial alloc]initConforming];
x890tyu.amount=1564...
How to initialize a List to a given size (as opposed to capacity)?
...f string[10] as is (backing store of an lists is also an array) or it will allocate a new memory of its own and then copy the contents of string[10]? string[10] will get garbage collected automatically if L selects the later route.
– RBT
Mar 25 '17 at 4:30
...