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How do I do base64 encoding on iOS?
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This is a good use case for Objective C categories.
For Base64 encoding:
#import <Foundation/NSString.h>
@interface NSString (NSStringAdditions)
+ (NSString *) base64StringFromData:(NSData *)data length:(int)length;
@end
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How to throw an exception in C?
... (GNU libc)) or the CPU hardware interruption (or other notification error form the CPU if there is)(How processor handles the case of division by zero).
Exceptions are defined in C++ and other languages though. Exception handling in C++ is specified in the C++ standard "S.15 Exception handling", t...
Tracking the script execution time in PHP
...st track the amount of CPU time a particular script has used in order to enforce the max_execution_time limit.
18 Answers...
Node.js get file extension
...ted Apr 26 '13 at 7:10
Tim Santeford
22.9k1111 gold badges6969 silver badges9898 bronze badges
answered Apr 3 '13 at 3:32
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Trying to login to RDP using AS3
...n the connectoid code I have downloaded, so that it will return a properly formed ByteArray with endian being little - this only matters if you'll read ordered data from it, not when you read bytes.
public function sendMcsData(): ByteArray {
trace("Secure.sendMcsData");
var num_channels: in...
How is a CRC32 checksum calculated?
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The polynomial for CRC32 is:
x32 + x26 + x23 + x22 + x16 + x12 + x11 + x10 + x8 + x7 + x5 + x4 + x2 + x + 1
Wikipedia
CRC calculation
Or in hex and binary:
0x 01 04 C1 1D B7
1 0000 0100 1100 0001 0001 1101 1011 0111
The hig...
Understanding repr( ) function in Python
...gt;> x
'foo'
So the name x is attached to 'foo' string. When you call for example repr(x) the interpreter puts 'foo' instead of x and then calls repr('foo').
>>> repr(x)
"'foo'"
>>> x.__repr__()
"'foo'"
repr actually calls a magic method __repr__ of x, which gives the strin...
How do I get the path to the current script with Node.js?
...found it after looking through the documentation again. What I was looking for were the __filename and __dirname module-level variables.
__filename is the file name of the current module. This is the resolved absolute path of the current module file. (ex:/home/kyle/some/dir/file.js)
__dirname is t...
How to use custom packages
...ckage in Go. It's probably something very obvious but I cannot find much information about this. Basically, I have these two files in the same folder:
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In where shall I use isset() and !empty()
...mewhere that the isset() function treats an empty string as TRUE , therefore isset() is not an effective way to validate text inputs and text boxes from a HTML form.
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