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What's faster, SELECT DISTINCT or GROUP BY in MySQL?
...y i) a;
count
10001
(1 row)
Time: 594,481 ms
http://www.pgsql.cz/index.php/PostgreSQL_SQL_Tricks_I
so be careful ... :)
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Java equivalent to C# extension methods
...ll more modern languages allow for some kind existing class extension: C#, php, objective-c, javascript. Java surely shows its age here. Imagine you want to write a JSONObject to disk. Do you call jsonobj.writeToDisk() or someunrelatedclass.writeToDisk(jsonobj) ?
– woens
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“Origin null is not allowed by Access-Control-Allow-Origin” error for request made by application ru
...d to maybe add a HEADER in your called script, here is what I had to do in PHP:
header('Access-Control-Allow-Origin: *');
More details in Cross domain AJAX ou services WEB (in French).
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Creating stored procedure and SQLite?
...r extend SQLite with your own user defined functions in the host language (PHP, Python, Perl, C#, Javascript, Ruby etc). You can then use these custom functions as part of any SQLite select/update/insert/delete. I've done this in C# using DevArt's SQLite to implement password hashing.
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How to stop /#/ in browser with react-router?
... # Setting up apache options (Godaddy specific)
#DirectoryIndex index.php
#RewriteBase /
# Defining the rewrite rules
RewriteCond %{SCRIPT_FILENAME} !-d
RewriteCond %{SCRIPT_FILENAME} !-f
RewriteRule ^.*$ ./index.html
Then you obtain the query parameters with window.loc...
Using JQuery - preventing form from submitting
...otherwise show error.
HTML
<form id="form" class="form" action="page2.php" method="post">
<input type="text" class="check-validity" value="" />
<input type="text" class="check-validity" value="" />
<input type="text" class="check-validity" value="" />
<in...
How to change default timezone for Active Record in Rails?
... much! I'd been struggling with this as well. I have an inherited legacy PHP app that interacts with the same mysql database and stores all times as local; updating it to use UTC was not an option. What I had previously accomplished nothing: config.time_zone = 'Central Time (US & Canada)' c...
How can I convert an image into Base64 string using JavaScript?
...on firefox 35 on some images, the base64 is different from the base64 that php creates on the same image.
– hanshenrik
Mar 6 '15 at 2:39
1
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How to convert current date into string in java?
... and the answer right below for the timestring. C:
– php_coder_3809625
Jul 13 '16 at 13:54
@Ian Purton Is string date ...
.bashrc/.profile is not loaded on new tmux session (or window) — why?
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From this thread:
https://bbs.archlinux.org/viewtopic.php?id=124274
seems using .bash_profile would work.
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