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Are complex expressions possible in ng-hide / ng-show?
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Use a controller method if you need to run arbitrary JavaScript code, or you could define a filter that returned true or false.
I just tested (should have done that first), and something like ng-show="!a && b" worked as expected.
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Remove a prefix from a string [duplicate]
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I don't know about "standard way".
def remove_prefix(text, prefix):
if text.startswith(prefix):
return text[len(prefix):]
return text # or whatever
As noted by @Boris and @Stefan, on Python 3.9+ you can use
text.removeprefix(prefix)
with the same behavior.
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What does -z mean in Bash? [duplicate]
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-z string True if the string is null (an empty string)
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半个汉字的校验与处理(C++) - C/C++ - 清泛网 - 专注C/C++及内核技术
...长度
char *GetTruncate(char *strSrc, int nMaxLen)
{
if (strSrc == NULL || nMaxLen == 0)
{
return NULL;
}
int len = strlen(strSrc);
if (len == 0)
{
return strSrc;
}
int size = len; bool bFlag...
C++中判断文件、目录是否存在的几种方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...介绍几种方法。
首先关于判断文件的存在性：
一、ifstream
在C++中，可以利用ifstream文件输入流，当我们直接使用ifstream来创建文件输入流的时候，如果文件不存在则流创建失败。
ifstream fin("hello.txt");
if (!fin)
{
std::cout <...
WSAAsyncSelect模型 - C/C++ - 清泛网 - 专注C/C++及内核技术
...始化代码
WSADATA wsaData;
WORD sockVersion = MAKEWORD(2, 2);
if(WSAStartup(sockVersion, &wsaData) != 0)
{
return 0;
}
USHORT nPort=4567;
SOCKET s=socket(AF_INET,SOCK_STREAM,0);
sockaddr_in sin;
sin.sin_family=AF_INET;
sin.sin_port=ntohs(nPort);
sin.sin_addr.S_un.S_addr...
php发送get、post请求的几种方法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... fsockopen( $url[host], $url[port]?$url[port]:80 , $errno, $errstr, 30);
if (!$fp) {
return false;
} else {
$request = "GET $query HTTP/1.1\r\n";
$request .= "Host: $url[host]\r\n";
$request .= "Connection: Close\r\n";
if($cookie) $request.="Cookie: $cookie\n";
$request.="\r\...
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
...enter_app_singleton() {
int fd = open(kPidFileName, O_RDWR | O_TRUNC);
if (fd == -1) {
//对应的锁文件当前不存在，试图创建该锁文件
fd = creat(kPidFileName, S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH);
if (fd > 0) {
fchmod(fd, S_IRUSR|S_IRUSR|S_IWUSR|S_IRGRP|S...
How to create and write to a txt file using VBA
I have a file which is manually added or modified based on the inputs. Since most of the contents are repetitive in that file, only the hex values are changing, I want to make it a tool generated file.
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SQL exclude a column using SELECT * [except columnA] FROM tableA?
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I agree with everyone... but if I was going to do something like this I might do it this way:
/* Get the data into a temp table */
SELECT * INTO #TempTable
FROM YourTable
/* Drop the columns that are not needed */
ALTER TABLE #TempTable
DROP COLUMN Colu...