For example, you want to set 40% alpha transparence to #000000
(black color), you need to add 66
like this #66000000
.
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/* | |
##Device = Desktops | |
##Screen = 1281px to higher resolution desktops | |
*/ | |
@media (min-width: 1281px) { | |
/* CSS */ | |
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/* Licensed to the Apache Software Foundation (ASF) under one or more | |
* contributor license agreements. See the NOTICE file distributed with | |
* this work for additional information regarding copyright ownership. | |
* The ASF licenses this file to You under the Apache License, Version 2.0 | |
* (the "License"); you may not use this file except in compliance with | |
* the License. You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software |
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/* | |
* Original script by: Shafiul Azam | |
* Version 4.0 | |
* Modified by: Luigi Balzano | |
* Description: | |
* Inserts Countries and/or States as Dropdown List | |
* How to Use: | |
In Head section: |
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var redis = require("redis") | |
, subscriber = redis.createClient() | |
, publisher = redis.createClient(); | |
subscriber.on("message", function(channel, message) { | |
console.log("Message '" + message + "' on channel '" + channel + "' arrived!") | |
}); | |
subscriber.subscribe("test"); |
As your business logic gets complex you may need to implement transactions. The classic example is a bank funds transfer from account A to account B. If the withdrawal from account A fails then the deposit to account B should either never take place or be rolled back.
All the complexity is handled by ActiveRecord::Transactions
. Any model class or instance has a method named .transaction
. When called and passed a block, that block will be executed inside a database transaction. If there's an exception raised, the transaction will automatically be rolled back.
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#!/bin/sh | |
# | |
# redis - this script starts and stops the redis-server daemon | |
# | |
# chkconfig: - 85 15 | |
# description: Redis is a persistent key-value database | |
# processname: redis-server | |
# config: /etc/redis/redis.conf | |
# config: /etc/sysconfig/redis | |
# pidfile: /var/run/redis.pid |