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How can I iterate over an enum?
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Except now you've actually allocated memory when an enum, provided it is zero-indexed and strictly continous, can do that task without allocating memory.
– Cloud
Jan 17 '14 at 23:02
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How to throw an exception in C?
...r.c
#include <stdlib.h>
#include <stdint.h>
extern void *__cxa_allocate_exception(size_t thrown_size);
extern void __cxa_throw (void *thrown_exception, void* *tinfo, void (*dest) (void *) );
extern void * _ZTIl; // typeinfo of long
int bar1()
{
int64_t * p = (int64_t*)__cxa_allocate_e...
How to get pixel data from a UIImage (Cocoa Touch) or CGImage (Core Graphics)?
...olorSpaceCreateDeviceRGB();
unsigned char *rawData = (unsigned char*) calloc(height * width * 4, sizeof(unsigned char));
NSUInteger bytesPerPixel = 4;
NSUInteger bytesPerRow = bytesPerPixel * width;
NSUInteger bitsPerComponent = 8;
CGContextRef context = CGBitmapContextCreate(raw...
How to copy Java Collections list
...hen it will throw an IndexOutOfBoundsException. The expectation is that no allocations will be required by Collections.copy to work, and if any are, then it throws that exception. It's an optimization to require the copied collection to be preallocated (b), but I generally do not think that the feat...
内存优化总结:ptmalloc、tcmalloc和jemalloc - 操作系统(内核) - 清泛网 - ...
内存优化总结:ptmalloc、tcmalloc和jemallocmemory-optimize需求系统的物理内存是有限的，而对内存的需求是变化的, 程序的动态性越强，内存管理就越重要，选择合适的内存管理算法会带来明显的性能提升。比如nginx， 它在每个连接accept...
Building big, immutable objects without using constructors having long parameter lists
...ore instances than necessary - isn't really that much of a problem. Object allocation is very cheap, as is garbage collection of short-lived objects. When escape analysis is enabled by default, this kind of "intermediate objects" are likely to be stack allocated and cost literally nothing to create....
Delete a project from SonarQube
...rization: Basic YWRtaW46YWRtaW4=" -H "Cache-Control: no-cache" -H "Postman-Token: 10a0e9a1-8dae-a9d1-45f2-0d8e56de999d" -H "Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW" -F "keys=daBestProjectKey" "http://localhost:9000/api/projects/bulk_delete"
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Using generic std::function objects with member functions in one class
... in size, assigning this to an std::function will result in dynamic memory allocation.
On the other hand, a lambda that captures this is only one pointer in size, assigning it to an std::function will not result in dynamic memory allocation with g++.
While I have not verified this with other compi...
How to debug Lock wait timeout exceeded on MySQL?
...---------------
BUFFER POOL AND MEMORY
----------------------
Total memory allocated 18909316674; in additional pool allocated 1048576
Dictionary memory allocated 2019632
Buffer pool size 1048576
Free buffers 175763
Database pages 837653
Modified db pages 6
Pending reads 0
Pending write...
UIView with rounded corners and drop shadow?
...ed corners in a view with the drop shadow.
UIView* roundedView = [[UIView alloc] initWithFrame: frame];
roundedView.layer.cornerRadius = 5.0;
roundedView.layer.masksToBounds = YES;
UIView* shadowView = [[UIView alloc] initWithFrame: frame];
shadowView.layer.shadowColor = [UIColor blackColor].CGCol...