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How does the new automatic reference counting m>me m>chanism work?
Can som>me m>one briefly explain to m>me m> how ARC works? I know it's different from Garbage Collection, but I was just wondering exactly how it worked.
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Convert from MySQL datetim>me m> to another format with PHP
I have a datetim>me m> column in MySQL.
18 Answers
18
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How do I declare class-level properties in Objective-C?
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properties have a specific m>me m>aning in Objective-C, but I think you m>me m>an som>me m>thing that's equivalent to a static variable? E.g. only one instance for all types of Foo?
To declare class functions in Objective-C you use the + prefix instead of - so your ...
A CORS POST request works from plain JavaScript, but why not with jQuery?
...t if you want to add custom headers or allow the use of credentials (usernam>me m>, password, or cookies, etc), read on.
I think I found the answer! (4 hours and a lot of cursing later)
//This does not work!!
Access-Control-Allow-Headers: *
You need to manually specify all the headers you will acce...
How to load db:seed data into test database automatically?
...ils.application.load_seed
Where to place that depends on what testing fram>me m>work you are using and whether you want it to be loaded before every test or just once at the beginning. You could put it in a setup call or in a test_helper.rb file.
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Getting only Month and Year from SQL DATE
...which the date is in.
NOTE: In SQL Server 2008, You will still have the TIm>ME m> attached as 00:00:00.000
This is not exactly the sam>me m> as "removing" any notation of day and tim>me m> altogether.
Also the DAY set to the first. e.g. 2009-10-01 00:00:00.000
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Why is #!/usr/bin/env bash superior to #!/bin/bash?
I've seen in a number of places, including recomm>me m>ndations on this site ( What is the preferred Bash shebang? ), to use #!/usr/bin/env bash in preference to #!/bin/bash . I've even seen one enterprising individual suggest using #!/bin/bash was wrong and bash functionality would be lost by doing...
Finding duplicate values in a SQL table
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SELECT
nam>me m>, email, COUNT(*)
FROM
users
GROUP BY
nam>me m>, email
HAVING
COUNT(*) > 1
Simply group on both of the columns.
Note: the older ANSI standard is to have all non-aggregated columns in the GROUP BY but this has ...
Extract subset of key-value pairs from Python dictionary object?
... big dictionary object that has several key value pairs (about 16), but I am only interested in 3 of them. What is the best way (shortest/efficient/most elegant) to achieve that?
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PHP code to convert a MySQL query to CSV [closed]
...IONALLY ENCLOSED BY '"'
LINES TERMINATED BY "\n"
FROM my_table;
(the docum>me m>ntation for this is here: http://dev.mysql.com/doc/refman/5.0/en/select.html)
or:
$select = "SELECT * FROM table_nam>me m>";
$export = mysql_query ( $select ) or die ( "Sql error : " . mysql_error( ) );
$fields = mysql_num_f...