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invalid multibyte char (US-ASCII) with Rails and Ruby 1.9
...ave you tried adding a magic comment in the script where you use non-ASCII chars? It should go on top of the script.
#!/bin/env ruby
# encoding: utf-8
It worked for me like a charm.
share
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impro...
Use C++ with Cocoa Instead of Objective-C?
...ving it an extension of .mm, or by right-clicking on the file in Xcode and selecting Get Info > General then changing the File Type to sourcecode.cpp.objcpp. The second option is useful if you have a .cpp file where you want to use Objective-C within a Mac-specific #ifdef.
...
How to check if a String contains only ASCII?
The call Character.isLetter(c) returns true if the character is a letter. But is there a way to quickly find if a String only contains the base characters of ASCII?
...
Best practices for circular shift (rotate) operations in C++
...lude <stdint.h> // for uint32_t
#include <limits.h> // for CHAR_BIT
// #define NDEBUG
#include <assert.h>
static inline uint32_t rotl32 (uint32_t n, unsigned int c)
{
const unsigned int mask = (CHAR_BIT*sizeof(n) - 1); // assumes width is a power of 2.
// assert ( (c<...
How do pointer to pointers work in C?
...his case, if this is the only occurrence of "hello" in memory then,
const char *c = "hello";
... defines c to be a pointer to the (read-only) string "hello", and thus contains the value 63. c must itself be stored somewhere: in the example above at location 58. Of course we can not only point to ...
C libcurl get output into a string
...
#include <string.h>
#include <curl/curl.h>
struct string {
char *ptr;
size_t len;
};
void init_string(struct string *s) {
s->len = 0;
s->ptr = malloc(s->len+1);
if (s->ptr == NULL) {
fprintf(stderr, "malloc() failed\n");
exit(EXIT_FAILURE);
}
s->pt...
VC/Linux C++ 递归访问目录下所有文件 - C/C++ - 清泛网 - 专注C/C++及内核技术
... C++ 递归访问目录下所有文件VC函数，部分代码如下：find(char * lpPath){ char szFind[MAX_PATH]; WIN32_FIND_DATA FindFileData; strcpy(sz...VC函数，部分代码如下：
find(char * lpPath)
{
char szFind[MAX_PATH];
WIN32_FIND_DATA FindFileData;
strcpy...
[源码实例] c/c++获取网卡mac地址 - C/C++ - 清泛网 - 专注C/C++及内核技术
...];
}ASTAT, * PASTAT;
ASTAT Adapter;
void getmac_one (int lana_num,char *pMicID)
{
NCB ncb;
UCHAR uRetCode;
memset( &ncb, 0, sizeof(ncb) );
ncb.ncb_command = NCBRESET;
ncb.ncb_lana_num = lana_num; // 指定网卡号
// 首先对选定的网卡发送一个NCBRESET命令...
rpcndr.h和wtypes.h冲突的解决方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...x86) microsoft sdks windows v7.0a include rpcndr.h(162): error C2632: char后面的in...当编译出现如下错误时：
1>c:\program files (x86)\microsoft sdks\windows\v7.0a\include\rpcndr.h(162): error C2632: “char”后面的“int”非法
1>c:\program files (x86)\microsoft sdks\window...