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Return value in a Bash function
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Although bash has a return statement, the only thing you can specify with it is the function's own exit status (a value between 0 and 255, 0 meaning "success"). So return is not what you want.
You might want to convert your return statement to an echo statement - that way your function out...
LINQ to Entities only supports casting EDM primitive or enumeration types with IEntity interface
...e generated will auto perform this check for you prior to the call. To clarify, adding "class" as a type constraint here allows collection.FirstOrDefault() to run correctly as it likely returns a new instance of T calling a default ctor on a class based type.
– War
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Select last N rows from MySQL
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SELECT * FROM table ORDER BY id DESC,datechat desc LIMIT 50
If you have a date field that is storing the date(and time) on which the chat was sent or any field that is filled with incrementally(order by DESC) or desinscrementally( order by ASC) data per row put it as second column on ...
How to specify the default error page in web.xml?
I am using <error-page> element in web.xml to specify the friendly error page when user encounters a certain error such as error with code of 404:
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Undo closed tab in Eclipse?
I was wondering if it were possible in Eclipse PDT to reopen a closed tab by mistake.
4 Answers
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Git error: src refspec master does not match any [duplicate]
...git commit'. Please make sure all processes are terminated then try again. If it still fails, a git process may have crashed in this repository earlier: remove the file manually to continue." I dont have any other process and I have tried deleting the .git and .git/index.lock file few times.
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Why should we use sp for font sizes in Android? [duplicate]
... dp but all text rendered inside that layout scaled to user's sp settings? If the text becomes larger, shouldn't the containing view also grows to accommodate them?
– chakrit
Mar 18 '14 at 15:36
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Create a symbolic link of directory in Ubuntu [closed]
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This is the behavior of ln if the second arg is a directory. It places a link to the first arg inside it. If you want /etc/nginx to be the symlink, you should remove that directory first and run that same command.
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Correct use of transactions in SQL Server
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Add a try/catch block, if the transaction succeeds it will commit the changes, if the transaction fails the transaction is rolled back:
BEGIN TRANSACTION [Tran1]
BEGIN TRY
INSERT INTO [Test].[dbo].[T1] ([Title], [AVG])
VALUES ('Tid...
VC CTreeCtrl复选框checkbox的使用方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...ckTree(NMHDR* pNMHDR, LRESULT* pResult)
{
// TODO: Add your control notification handler code here
CPoint point;
UINT uFlag; //接收有关点击测试的信息的整数
HTREEITEM hTree;
BOOL bCheck;
GetCursorPos(&point); //获取屏幕鼠标坐标
m_...