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MySQL: @variable vs. variable. What's the difference?
... a procedure variable is reinitialized to NULL each time the procedure is called, while the session-specific variable is not:
CREATE PROCEDURE prc_test ()
BEGIN
DECLARE var2 INT DEFAULT 1;
SET var2 = var2 + 1;
SET @var2 = @var2 + 1;
SELECT var2, @var2;
END;
SET @var2 = 1;
CALL prc...
Scala underscore - ERROR: missing parameter type for expanded function
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Why does myStrings.foreach(println(_)) automatically include toString for the argument to println?
– Kevin Meredith
Feb 11 '14 at 17:19
1
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django unit tests without a db
... doesn't require the db to set up. And while it is fast to setup a db, I really don't need it in some situations.
11 Answer...
How to open a new tab using Selenium WebDriver?
...ow. Obviously, you'd need to keep track of the window name(s) as normal to allow switching between them.
– Mark Rowlands
Jul 16 '13 at 15:42
1
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How do I remove  from the beginning of a file?
...oks fine when I open it using gedit , but when it's read by PHP (to merge all the CSS files into one), this CSS has the following characters prepended to it: 
...
How do I update my forked repo using SourceTree?
...hen select "master" there before I could hit OK.
– am_
Mar 13 '15 at 17:00
A more elaborate summary of this is at this...
Comparing two CGRects
...
in fact, equalTo(_:) is now deprecated so == is preferred.
– olx
May 9 '18 at 5:51
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Linux MySql编译安装 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...d mysql
useradd -g mysql mysql
#开始编译安装
cmake -DCMAKE_INSTALL_PREFIX=/usr/local/mysql \
-DMYSQL_UNIX_ADDR=/tmp/mysql.sock \
-DDEFAULT_CHARSET=utf8 \
-DDEFAULT_COLLATION=utf8_general_ci \
-DWITH_EXTRA_CHARSETS=all \
-DWITH_MYISAM_STORAGE_ENGINE=1 \
-DWITH_INNOBASE_STORAGE_ENGIN...
How to link to apps on the app store
...C is here.
A SKStoreProductViewController object presents a store that allows the
user to purchase other media from the App Store. For example, your app
might display the store to allow the user to purchase another app.
From News and Announcement For Apple Developers.
Drive Customer...
How to detect if a script is being sourced
I have a script where I do not want it to call exit if it's being sourced.
17 Answers
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