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Change from SQLite to PostgreSQL in a fresh Rails project
I have a rails app that's databases are in SQLite (The dev and production). Since I am moving to heroku, I want to convert my database to PostgreSQL.
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What does “yield break;” do in C#?
..., the last line gets executed and you will see the message in your console app.
Or like this with yield break:
int i = 0;
while (true)
{
if (i < 5)
{
yield return i;
}
else
{
// note that i++ will not be executed after this
yield break;
}
i++;...
How to get the device's IMEI/ESN programmatically in android?
...ing said, be careful about doing this. Not only will users wonder why your application is accessing their telephony stack, it might be difficult to migrate data over if the user gets a new device.
Update: As mentioned in the comments below, this is not a secure way to authenticate users, and raises...
Are fluid websites worth making anymore? [closed]
...d width websites are much easier to make and also much easier to make them appear consistent.
20 Answers
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WCF service startup error “This collection already contains an address with scheme http”
I built a web application containing a WCF service contract and a Silverlight control which makes calls to that WCF service. On my development and test servers it works great.
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Rails - How to use a Helper Inside a Controller
...to include your helper module in your controller:
class MyController < ApplicationController
include MyHelper
def xxxx
@comments = []
Comment.find_each do |comment|
@comments << {:id => comment.id, :html => html_format(comment.content)}
end
end
end
Option 2...
What's invokedynamic and how do I use it?
... as syntax sugar for reflective method calls. It can have very interesting applications. see http://www.infoq.com/presentations/Statically-Dynamic-Typing-Neal-Gafter
Neal Gafter, who's responsible for C#'s dynamic type, just defected from SUN to MS. So it's not unreasonable to think that the same t...
File Upload using AngularJS
...wser way, without 3rd party libraries. Works on all the latest browsers.
app.directive('myDirective', function (httpPostFactory) {
return {
restrict: 'A',
scope: true,
link: function (scope, element, attr) {
element.bind('change', function () {
...
ng-repeat :filter by single field
...
Specify the property (i.e. colour) where you want the filter to be applied:
<div ng-repeat="product in products | filter:{ colour: by_colour }">
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基于PECL OAuth打造微博应用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...拿到属于你自己的CONSUMER_KEY和CONSUMER_SECRET（有时也被称作APP_*）。
下面开始！假定我们要开发一个类似Follow5和微博通的应用，简单点说就是把消息同时发送到多个微博平台，出于安全性的考虑，不会使用HTTP Basic，而会使用OAuth...