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Linux C/C++进程单实例互斥代码分享 - C/C++ - 清泛网 - 专注C/C++及内核技术
...xit(1);
}
}
// 锁定文件后，将该进程的pid写入文件
char buf[16] = {};
sprintf(buf, "%d", getpid());
ftruncate(fd, 0);
ret = write(fd, buf, strlen(buf));
if (ret < 0) {
printf("Write file failed, file: %s, error: %s\n", kPidFileName, strerror(errno));
close(fd);
...
How to upload files to server using JSP/Servlet?
...putStream(), "UTF-8"));
StringBuilder value = new StringBuilder();
char[] buffer = new char[1024];
for (int length = 0; (length = reader.read(buffer)) > 0;) {
value.append(buffer, 0, length);
}
return value.toString();
}
String description = getValue(request.getPar...
How to display double quotes(") Symbol in a TextView?
...
In the strings.xml, you can simply escape special characters (eg double quotes) with a backslash :
"message \"quote string 1\" and \"quote string 2\" end message"
But in views xml (eg layout.xml), you have to use HTML character entities (like &quot;) :
"message &...
The split() method in Java does not work on a dot (.) [duplicate]
...it splits on regular expressions, and . in a regular expression means "any character".
Try temp.split("\\.").
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jQuery dot in ID selector? [duplicate]
...
$('#root\\.SomeCoolThing')
From the docs:
To use any of the meta-characters (such as
!"#$%&'()*+,./:;<=>?@[\]^`{|}~) as a literal part of a name, it must
be escaped with with two backslashes: \\. For example, an element with
id="foo.bar", can use the selector $("#foo\\.bar...
How can I use modulo operator (%) in JavaScript? [duplicate]
...ot the answer you're looking for? Browse other questions tagged javascript char character or ask your own question.
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...
截图软件截图区域以外背景变灰的实现--AlphaBlend - C/C++ - 清泛网 - 专注...
...--------画黑色背景----------------
COLORREF bgColor = RGB(0, 0, 0);
char alpha = (255 * 30) / 100;
int screenX = GetSystemMetrics(SM_CXSCREEN);
int screenY = GetSystemMetrics(SM_CYSCREEN);
CDC memdc;
memdc.CreateCompatibleDC(&dc);
CBitmap bmp, *pOldBitmap;
bmp.CreateCompatibleBitmap(&...
Is “inline” without “static” or “extern” ever useful in C99?
...efore, the following example might not
behave as expected.
inline const char *saddr(void)
{
static const char name[] = "saddr";
return name;
}
int compare_name(void)
{
return saddr() == saddr(); // unspecified behavior
}
Since the implementation might use the inline definition f...
Optional Parameters with C++ Macros
...m
{
plain = 0,
bold = 1,
italic = 2
};
void PrintString(const char* message, int size, int style)
{
}
#define PRINT_STRING_1_ARGS(message) PrintString(message, 0, 0)
#define PRINT_STRING_2_ARGS(message, size) PrintString(message, size, 0)
#define PRINT_STRING_3_ARGS...