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Get element inside element by class and ID - JavaScript
...r targetDiv = document.getElementById("foo").getElementsByClassName("bar")[0];
getElementById only returns one node, but getElementsByClassName returns a node list. Since there is only one element with that class name (as far as I can tell), you can just get the first one (that's what the [0] is ...
Saving a Numpy array as an image
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answered May 24 '09 at 0:26
dF.dF.
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Splitting String with delimiter
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answered May 8 '13 at 21:50
tim_yatestim_yates
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C#: how to get first char of a string?
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Just MyString[0]. This uses the String.Chars indexer.
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Remove duplicate entries using a Bash script [duplicate]
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You can sort then uniq:
$ sort -u input.txt
Or use awk:
$ awk '!a[$0]++' input.txt
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c++提取复数的实部和虚部 - C/C++ - 清泛网 - 专注C/C++及内核技术
...arse(COMPLEX * cp, const char * strCplx, const int len)
{
memset(cp, 0, sizeof(COMPLEX));
char buf[MAX_BUF_LEN];
int signPos = -1, // +/-号位置
iPos = -1; // 结尾的i的位置
for (int i = len-1; i >-1; i--)
{
if ('i' == strCplx[i])
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解决：Run-Time Check Failure #0，The value of ESP was not properly sav...
解决：Run-Time Check Failure #0，The value of ESP was not properly saved调用DLL函数，出现错误Run-Time Check Failure #0 - The value of ESP was not properly saved across a function call. ...调用DLL函数，出现错误
Run-Time Check Failure #0 - The value of ESP was not properly saved...
c++ Timer使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...提供实例参考。窗口应用程序使用Timer：
#define TIMER_ID 1000 //定时器ID，可任意。触发后回调函数中用于区别不同的定时器以执行不同的任务
SetTimer(TIMER_ID, 1000 , NULL); //启动定时器，1秒后触发
KillTimer(TIMER_ID); //取消定时器
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windows C++ gbk转为utf-8 - C/C++ - 清泛网 - 专注C/C++及内核技术
...har_2_utf8(const char *m_string,char *utf8_string,int slen) {
int len=0;
wchar_t *w_string;
//char *utf8_string;
//计算由ansi转换为unicode后，unicode编码的长度
len=MultiByteToWideChar(CP_ACP,0,(char *)m_string, -1, NULL,0);//cp_acp指示了转换为unicode编码...
路径 /storage/emulated/0/... 在哪儿？ - 更多技术 - 清泛网 - 专注C/C++及内核技术
路径 /storage/emulated/0/... 在哪儿？有时Android下载文件提示保存在 storage emulated 0 ...目录下，但是在文件管理器中根本找不到这个目录，那么这个目录到底在何方呢？有时Android下载文件提示保存在/storage/emulated/0/...目录下，但是在...