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Why does base64 encoding require padding if the input length is not divisible by 3?
... either have to decode 4 bytes at a time or split the string after padding characters. It seems like those implementations just ignore the padding chars, even when they are in the middle of a string.
– Roman
May 30 at 7:02
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How to initialize all the elements of an array to any specific value in java
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[Incidentally, memset in C or C++ is only of any real use for arrays of char.]
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Is It Possible to NSLog C Structs (Like CGRect or CGPoint)?
...e-C data item. It can hold any of the scalar types such as int, float, and char, as well as pointers, structures, and object ids.
Example:
CGPoint cgPoint = CGPointMake(10,30);
NSLog(@"%@",[NSValue valueWithCGPoint:cgPoint]);
OUTPUT : NSPoint: {10, 30}
Hope it helps you.
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Remove all whitespaces from NSString
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stringByTrimmingCharactersInSet only removes characters from the beginning and the end of the string, not the ones in the middle.
1) If you need to remove only a given character (say the space character) from your string, use:
[yourString ...
How to remove leading zeros from alphanumeric text?
...for start of input rather than start of line). The 0* means zero or more 0 characters (you could use 0+ as well). The replaceFirst just replaces all those 0 characters at the start with nothing.
And if, like Vadzim, your definition of leading zeros doesn't include turning "0" (or "000" or similar s...
How can I grep for a string that begins with a dash/hyphen?
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The dash is a special character in Bash as noted at http://tldp.org/LDP/abs/html/special-chars.html#DASHREF. So escaping this once just gets you past Bash, but Grep still has it's own meaning to dashes (by providing options).
So you really need t...
使用NPAPI编写浏览器插件的源码实例(windows 7/linux) - C/C++ - 清泛网 - ...
...tp://code.google.com/p/npapi-headers/
plugin_exec.c中的一些函数
char* NP_GetMIMEDescription()
return的字符串的格式必须是:"text/html:htm,html:HTML Document;application/x-texinfo:tex,texi,texinfo:TexInfo Document;"
详情请看[3]
NPError NP_GetValue (void *future,
NPP...
如何判断GIF是否是动图 - C/C++ - 清泛网 - 专注C/C++及内核技术
...若是单图像会发现JFIF的标识，若为动图，则会出现GIF。charstrGIF[3];memcpy( strGIF, pbyImag...用记事本（或其他文本工具）打开图像文件，若是单图像会发现JFIF的标识，若为动图，则会出现GIF。
char strGIF[3];
memcpy( strGIF, pbyImageBuffe...
boost自定义composite_key_compare比较函数 - C/C++ - 清泛网 - 专注C/C++及内核技术
...st::multi_index_container;
using namespace boost::multi_index;
typedef char IDType[81];
struct TParam
{
IDType ID;
bool IsValid;
};
typedef TParam* TParam_p;
struct TParamIDIndex { };
struct TParamValidIndex { };
struct customize_compare
{
int operator()(const IDType l, cons...
一个宏命令，就可以程序崩溃时生成dump文件 - C/C++ - 清泛网 - 专注C/C++及内核技术
... if(pOrgEntry == NULL)
return FALSE;
unsigned char newJump[ 100 ];
DWORD dwOrgEntryAddr = (DWORD) pOrgEntry;
dwOrgEntryAddr += 5; // add 5 for 5 op-codes for jmp far
void *pNewFunc = &MyDummySetUnhandledExceptionFilter;
DWORD dwNewEn...