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git diff two files on same branch, same commit
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You don't need git for that, just use diff fileA.php fileB.php (or vimdiff if you want side by side comparison)
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MySQL Cannot Add Foreign Key Constraint
So I'm trying to add Foreign Key constraints to my database as a project requirement and it worked the first time or two on different tables, but I have two tables on which I get an error when trying to add the Foreign Key Constraints.
The error message that I get is:
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What .NET collection provides the fastest search
I have 60k items that need to be checked against a 20k lookup list. Is there a collection object (like List , HashTable ) that provides an exceptionly fast Contains() method? Or will I have to write my own? In otherwords, is the default Contains() method just scan each item or does it use a be...
Windows batch script launch program and exit console
I have a batch script that I use to launch a program, such as notepad.exe . When I double click on this batch file, notepad starts normally, but the black window of the cmd who launched notepad.exe remains in the background. What do I have to do in order to launch notepad.exe and make the cmd...
What happens to a declared, uninitialized variable in C? Does it have a value?
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Static variables (file scope and function static) are initialized to zero:
int x; // zero
int y = 0; // also zero
void foo() {
static int x; // also zero
}
Non-static variables (local variables) are indeterminate. Reading them prio...
Common elements comparison between 2 lists
Got that so far, but can't seem to get it to work!
13 Answers
13
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常用Git命令汇总 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...了一些常用的Git命令。
常用配置
system #系统级别
--global #用户全局
--local #单独一个项目
git config --global user.name "xxxx" #用户名
git config --global user.email "xxxx@xxx.com" #邮箱
git config --global core.editor vim #编辑器
git config --global ali...
How do you use variables in a simple PostgreSQL script?
...e official PostgreSQL documentation.
You can use new PG9.0 anonymous code block feature (http://www.postgresql.org/docs/9.1/static/sql-do.html )
DO $$
DECLARE v_List TEXT;
BEGIN
v_List := 'foobar' ;
SELECT *
FROM dbo.PubLists
WHERE Name = v_List;
-- ...
END $$;
Also you can get the ...
Postgres NOT in array
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edited Feb 26 '14 at 17:55
All Workers Are Essential
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Explicitly select items from a list or tuple
I have the following Python list (can also be a tuple):
8 Answers
8
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