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Remove by _id in MongoDB console
...
Very close. This will work:
db.test_users.deleteOne( {"_id": ObjectId("4d512b45cc9374271b02ec4f")});
i.e. you don't need a new for the ObjectId.
Also, note that in some drivers/tools, remove() is now deprecated and deleteOne or deleteMany should be used ins...
Batch files - number of command line arguments
... handle number of arguments with this sort of logic:
IF "%1"=="" GOTO HAVE_0
IF "%2"=="" GOTO HAVE_1
IF "%3"=="" GOTO HAVE_2
etc.
If you have more than 9 arguments then you are screwed with this approach though. There are various hacks for creating counters which you can find here, but be warne...
Make a div fill up the remaining width
...t.
Here you can notice that the middle element (in our case, with "content__middle" class) does not have any dimensional property specified - no width, nor padding, nor margin related property at all - but only an overflow: auto; (see note 1).
The great advantage is that now you can specify a max-...
Get the client IP address using PHP [duplicate]
...ant to get the client IP address who uses my website. I am using the PHP $_SERVER superglobal:
5 Answers
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What's the best UI for entering date of birth? [closed]
...birthdate.
A text box with an example is clear, quick and easy to enter:
_______
|_______| (example: 31/3/1970)
This should support flexible formatting such as 1/1/1970 or 20/07/70.
If you have to support different cultures with different date conventions (e.g. US and UK) then this could be err...
No generic implementation of OrderedDictionary?
... private KeyedCollection2<TKey, KeyValuePair<TKey, TValue>> _keyedCollection;
/// <summary>
/// Gets or sets the value associated with the specified key.
/// </summary>
/// <param name="key">The key associated with the value to get or...
Python Linked List
...tains a cargo object and a reference to a linked list.
class Node:
def __init__(self, cargo=None, next=None):
self.car = cargo
self.cdr = next
def __str__(self):
return str(self.car)
def display(lst):
if lst:
w("%s " % lst)
display(lst.cdr)
else:
w("nil\n")
...
ObjectiveC Parse Integer from String
...
NSArray *_returnedArguments = [serverOutput componentsSeparatedByString:@":"];
_returnedArguments is an array of NSStrings which the UITextField text property is expecting. No need to convert.
Syntax error:
[_appDelegate loggedIn...
Windbg Step 2 分析程序堆栈实战 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...http: www.cnblogs.com killmyday#include"stdafx.h"#include<tchar.h>#ifdef_UNICODE#define_ttol_wtol#else#define_ttolatol#e...转载+整理 http://www.cnblogs.com/killmyday
#include "stdafx.h"
#include <tchar.h>
#ifdef _UNICODE
#define _ttol _wtol
#else
#define _ttol atol
#endif
voi...
Cannot delete directory with Directory.Delete(path, true)
...nd other answers to this question.
I ran into this problem before.
The root of the problem is that this function does not delete files that are within the directory structure. So what you'll need to do is create a function that deletes all the files within the directory structure then all the di...