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How to convert NSDate into unix timestamp iphone sdk?
...from a PHP database online and then this one. I want to compare the two in order to make a decision to download the latest data about an object.
– JeroenEijkhof
May 29 '11 at 23:22
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Database sharding vs partitioning
...itioning. Partition pruning can often improve query performance by several orders of magnitude. For example, suppose an application contains an Orders table containing a historical record of orders, and that this table has been partitioned by week. A query requesting orders for a single week would o...
How to check Oracle database for long running queries
... s.sql_hash_value
and s.status = 'ACTIVE'
and s.username <> 'SYSTEM'
order by s.sid,t.piece
/
This shows locks. Sometimes things are going slow, but it's because it is blocked waiting for a lock:
select
object_name,
object_type,
session_id,
type, -- Type or system/user l...
How to set the thumbnail image on HTML5 video?
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<?php
$thumbs_dir = 'E:/xampp/htdocs/uploads/thumbs/';
$videos = array();
if (isset($_POST["name"])) {
if (!preg_match('/data:([^;]*);base64,(.*)/', $_POST['data'], $matches)) {
die("error");
}
$data = $matches[2];
$data ...
How can I generate an MD5 hash?
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You need java.security.MessageDigest.
Call MessageDigest.getInstance("MD5") to get a MD5 instance of MessageDigest you can use.
The compute the hash by doing one of:
Feed the entire input as a byte[] and calculate the hash in one operation with md.digest(bytes)...
Start ssh-agent on login
...a remote Git repo pulling from Bitbucket.com using an SSH alias. I can manually start the ssh-agent on my server but I have to do this every time I login via SSH.
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How can I make a button redirect my page to another page? [duplicate]
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try
<button onclick="window.location.href='b.php'">Click me</button>
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Drop all tables whose names begin with a certain string
...My solution below avoids this and deletes tables in foreign key dependency order.
– Tony O'Hagan
Jul 19 '15 at 1:15
Th...
Visually managing MongoDB documents and collections [closed]
... have to keep searching for documents, copy-and-pasting OIDs, etc., especially from a command prompt window (ever tried to "mark" text that wraps multiple lines?)
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Reverse colormap in matplotlib
I would like to know how to simply reverse the color order of a given colormap in order to use it with plot_surface.
7 Answ...