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Remove a JSON attribute [duplicate]
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Simple:
delete myObj.test.key1;
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Are nested transactions allowed in MySQL?
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InnoDB supports SAVEPOINTS.
You can do the following:
CREATE TABLE t_test (id INT NOT NULL PRIMARY KEY) ENGINE=InnoDB;
START TRANSACTION;
INSERT
INTO t_test
VALUES (1);
SELECT *
FROM t_test;
id
---
1
SAVEPOINT tran2;
INSERT
INTO t_test
VALUES (2);
SELECT *
FROM t_test...
VC/MFC 临界区域使用方法实例 - C/C++ - 清泛网 - 专注C/C++及内核技术
...方法：
*.h头文件：
#include <winbase.h>
CRITICAL_SECTION m_cs_test; ///< 定义一个临界区域对象
*.cpp源文件使用方法：
在类的构造函数内初始化临界区域对象
//该函数必须在任何线程调用EnterCriticalSection函数之前被调用，否则结果将...
包默认：src\appinventor\ai_zqp2013\test269 定制包名考虑实现一下。 - 微...
包默认：src\appinventor\ai_zqp2013\test269
定制包名考虑实现一下。edu.mit.appinventor.aicompanion3.Screen1main=appinventor.ai_zqp2013.test269.Screen1
`if __name__ == '__main__'` equivalent in Ruby
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It's handy, though, for testing things -- you can put module tests in there and run them just from the module file without any wrapper.
– ebneter
Feb 12 '10 at 3:11
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Can I get “&&” or “-and” to work in PowerShell?
...execute command 2". I have used it for things like:
build && run_tests
In PowerShell, the closest thing you can do is:
(build) -and (run_tests)
It has the same logic, but the output text from the commands is lost. Maybe it is good enough for you, though.
If you're doing this in a sc...
How do I search for an object by its ObjectId in the mongo console?
...e matters) and that the ObjectId is exact.
Documentation is here
> db.test.insert({x: 1})
> db.test.find() // no criteria
{ "_id" : ObjectId("4ecc05e55dd98a436ddcc47c"), "x" : 1 }
> db.test.find({"_id" : ObjectId("4ecc05e55dd98a436ddcc...
text-overflow: ellipsis not working
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width: 100px;
display: block;
overflow: hidden
}
<span>Test test test test test test</span>
Addendum
If you want an overview of techniques to do line clamping (Multiline Overflow Ellipses), look at this CSS-Tricks page: https://css-tricks.com/line-clampin/
Addendum2 ...
Node JS Error: ENOENT
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"/tmp/test.jpg" is not the correct path – this path starts with / which is the root directory.
In unix, the shortcut to the current directory is .
Try this "./tmp/test.jpg"
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How can I get the client's IP address in ASP.NET MVC?
... here was very helpful, but I cleaned it up for my purposes and added some tests. Here's what I ended up with:
using System;
using System.Linq;
using System.Net;
using System.Web;
public class RequestHelpers
{
public static string GetClientIpAddress(HttpRequestBase request)
{
try
...