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C# 操作MongoDb插入、更新、查询 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...ollection != null)
{
foreach (var col in collection)
{
string id = MongoDataHelper.GetString(col, "_id");
}
}
提示函数过期警告：
warning CS0618: “MongoDB.Driver.MongoServer.Create(string)”已过时:“Use MongoClient.GetServer instead.”
解决：
MongoS...
VC/Linux C++ 递归访问目录下所有文件 - c++1y / stl - 清泛IT社区，为创新赋能！
...ent.h>
#include <iostream>
#include <cstdlib>
#include <cstring>
using namespace std;
void GetFileInDir(string dirName)
{
DIR* Dir = NULL;
struct dirent* file = NULL;
if (dirName[dirName.size()-1] != '/')
{
&nb...
想试着做一个间歇运动的计时器 - App应用开发 - 清泛IT社区，为创新赋能！
...nbsp; set secs to (seconds - (minutes * 60))
return join strings( padZero(minutes), ":", padZero(secs) )
to padZero num
if num < 10
return join strings("0", num)
else
return num
怎么都不会...
Check a radio button with javascript
...
Technically it's CSS selector syntax. jQuery just borrowed and extended it
– Tim Seguine
Jan 16 '14 at 16:10
...
Extract a dplyr tbl column as a vector
... How would I do this if I want to pass not the colname itself but a string variable that contains it?
– mzuba
Aug 7 '17 at 22:16
...
How to crop circular area from bitmap in Android
I have a bitmap and I want to crop a circular region from this bitmap. All pixels outside the circle should be transparent. How can I do this?
...
delete map[key] in go?
...
Strangely enough,
package main
func main () {
var sessions = map[string] chan int{};
delete(sessions, "moo");
}
seems to work. This seems a poor use of resources though!
Another way is to check for existence and use the value itself:
package main
func main () {
var sessions = ...
How to add directory to classpath in an application run profile in IntelliJ IDEA?
...
@uaaquarius, Why is there no way to edit the command line string directly? This is frustrating.
– Pacerier
Dec 10 '17 at 0:54
...
JavaScript OOP in NodeJS: how?
...onstructor.apply( this, arguments );
}
//Pointless override to show super calls
//note that for performance (e.g. inlining the below is impossible)
//you should do
//method.$getAge = _super.getAge;
//and then use this.$getAge() instead of super()
method.getAge = function() {
return _super.getAge...
How to validate an Email in PHP?
...hould be replaced by the preg family (PCRE Regex Functions). There are a small amount of differences, reading the Manual should suffice.
Update 1: As pointed out by @binaryLV:
PHP 5.3.3 and 5.2.14 had a bug related to
FILTER_VALIDATE_EMAIL, which resulted in segfault when validating
large ...