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MySql Table Insert if not exist otherwise update
...plicate value in a UNIQUE index orPRIMARY KEY, MySQL performs an [UPDATE`](http://dev.mysql.com/doc/refman/5.7/en/update.html) of the old row...
The ON DUPLICATE KEY UPDATE clause can contain multiple column assignments, separated by commas.
With ON DUPLICATE KEY UPDATE, the affected-rows ...
What does !important mean in CSS?
...akes place for the rules still having a finger in the pie.
References:
http://www.w3.org/TR/CSS2/cascade.html#cascade
https://russmaxdesign.github.io/maxdesign-slides/02-css/207-css-cascade.html
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Using Mockito's generic “any()” method
...atic org.mockito.Mockito.verify;
verify(bar).doStuff(isA(Foo[].class));
http://site.mockito.org/mockito/docs/current/org/mockito/Matchers.html#isA(java.lang.Class)
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How can I default a parameter to Guid.Empty in C#?
...uct is not a primitive type.
For a list of all primitive types in .NET see http://msdn.microsoft.com/en-gb/library/system.typecode.aspx
(note that enum usually inherits int, which is a primitive)
But new Guid() is not a constant too!
I'm not saying it needs a constant. It needs something that can ...
How to declare constant map
... may emulate a map with a closure:
package main
import (
"fmt"
)
// http://stackoverflow.com/a/27457144/10278
func romanNumeralDict() func(int) string {
// innerMap is captured in the closure returned below
innerMap := map[int]string{
1000: "M",
900: "CM",
50...
How do you plot bar charts in gnuplot?
...I recommend Derek Bruening's bar graph generator Perl script. Available at http://www.burningcutlery.com/derek/bargraph/
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How to check task status in Celery?
... the task that will effect the goal, and sends to the client that made the HTTP request a response that indicates it should wait for a result.
The variable names and hyperlinks above are for Celery 4.x. In 3.x the corresponding variables and hyperlinks are: CELERY_TRACK_STARTED, CELERY_IGNORE_RES...
How do I make JavaScript beep?
...ty
Data URI is supported on almost every browser now. More information on http://caniuse.com/datauri
Demo
http://jsfiddle.net/7EAgz/
Conversion Tool
And here is where you can convert mp3 or wav files into Data URI format:
https://dopiaza.org/tools/datauri/index.php
...
Maximum Java heap size of a 32-bit JVM on a 64-bit OS
...the max heap size can be higher, approaching 4G on many Solaris systems.
(http://www.oracle.com/technetwork/java/hotspotfaq-138619.html#gc_heap_32bit)
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SQL DELETE with INNER JOIN
...E npc.type = "monster";
You can also check the MySQL delete syntax here: http://dev.mysql.com/doc/refman/5.0/en/delete.html
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