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MD5 algorithm in Objective-C
...)
- (NSString*)md5;
@end
MyAdditions.m
#import "MyAdditions.h"
#import <CommonCrypto/CommonDigest.h> // Need to import for CC_MD5 access
@implementation NSString (MyAdditions)
- (NSString *)md5
{
const char *cStr = [self UTF8String];
unsigned char result[CC_MD5_DIGEST_LENGTH];
...
How to throw an exception in C?
...ongjmp() functions, defined in setjmp.h. Example from Wikipedia
#include <stdio.h>
#include <setjmp.h>
static jmp_buf buf;
void second(void) {
printf("second\n"); // prints
longjmp(buf,1); // jumps back to where setjmp
// ...
How to remove duplicate values from a multi-dimensional array in PHP
How can I remove duplicate values from a multi-dimensional array in PHP?
19 Answers
19...
Suppress warning “Category is implementing a method which will also be implemented by its primary cl
...rride methods in category could be appropriate. for example, cases where multiple inheritance (like in c++) or interfaces (like in c#) could be used. just faced with that in my project and realized that overriding methods in categories are the best choice.
– peetonn
...
Google Maps V3 - How to calculate the zoom level for a given bounds
... west = sw.lng();
var east = ne.lng();
var angle = east - west;
if (angle < 0) {
angle += 360;
}
var zoom = Math.round(Math.log(pixelWidth * 360 / angle / GLOBE_WIDTH) / Math.LN2);
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Why in Java 8 split sometimes removes empty strings at start of result array?
...ce then an empty leading substring is included at the beginning of the resulting array. A zero-width match at the beginning however never produces such empty leading substring.
The same clause is also added to String.split in Java 8, compared to Java 7.
Reference implementation
Let us compare th...
Can you set a border opacity in CSS?
... the equivalent color to a 50% opaque red border over a white background (although any graphics under the border will not bleed through).
UPDATE: I've added "background-clip: padding-box;" to this answer (per SooDesuNe's suggestion in the comments) to ensure the border remains transparent even if ...
Vertically aligning CSS :before and :after content [duplicate]
... neither of these fiddles work on Chrome 52
– stealthwang
Aug 22 '16 at 21:37
both of them work for me on Chrome Ve...
How to get the mysql table columns data type?
...HOW FIELDS FROM tablename
/* returns "Field", "Type", "Null", "Key", "Default", "Extras" */
See this manual page.
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Streaming via RTSP or RTP in HTML5
...
Technically 'Yes'
(but not really...)
HTML 5's <video> tag is protocol agnostic—it does not care. You place the protocol in the src attribute as part of the URL. E.g.:
<video src="rtp://myserver.com/path/to/stream">
Your browser does not support the VID...