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How to grey out a button?
... disabled by setting the alpha (making it semi-transparent). This is especially useful if your button background is an image, and you don't want to create states for it.
button.setAlpha(.5f);
button.setClickable(false);
update: I wrote the above solution pre Kotlin and when I was a rookie. It's m...
Simulate CREATE DATABASE IF NOT EXISTS for PostgreSQL?
...an work around it from within psql by executing the DDL statement conditionally:
SELECT 'CREATE DATABASE mydb'
WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = 'mydb')\gexec
The manual:
\gexec
Sends the current query buffer to the server, then treats each column of each row of the query's...
How do you reference a capture group with regex find and replace in Visual Studio 2012, 2013, 2015,
...gular expressions' is checked, and put the following as the text to find:
_platformActions.InstallApp\((.+)\)
And the following as the text to replace it with:
this.Platform().App($1).Install()
Note: As SLaks points out in a comment below, the change in regex syntax is due to VS2012 switching to...
What does “./bin/www” do in Express 4.x?
...
In Express 3.0, you normally would use app.configure() (or app.use()) to set up the required middleware you need. Those middleware you specified are bundled together with Express 3.0.
Example:
var express = require('express');
var routes = require...
Does height and width not apply to span?
...ides no context to indicate that a div is inherently inappropriate semantically.
– Isaac
Mar 22 '10 at 9:45
1
...
Registry Key '…' has value '1.7', but '1.6' is required. Java 1.7 is Installed and the Registry is P
... one of the server admins "updated" our Java to an older version and uninstalled the one we were using. Don't ask me why, I don't know. I re-installed Java 1.7 and uninstalled 1.6 along with the JREs.
...
How to concatenate and minify multiple CSS and JavaScript files with Grunt.js (0.3.x)
...change the structure of your project.
If doing the latter, you could put all your sources under ./src and your built files under ./dest
src
├── css
│ ├── 1.css
│ ├── 2.css
│ └── 3.css
└── js
├── 1.js
├── 2.js
└── 3.js
...
Swift - encode URL
...= "test/test"
let escapedString = originalString.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed)
print(escapedString!)
Output:
test%2Ftest
Swift 1
In iOS 7 and above there is stringByAddingPercentEncodingWithAllowedCharacters
var originalString = "test/test"
var escapedString...
Makefile经典教程（入门必备） - C/C++ - 清泛网 - 专注IT技能提升
...定义的值。如：
foo = $(bar)
bar = $(ugh)
ugh = Huh?
all:
echo $(foo)
我们执行“make all”将会打出变量$(foo)的值是“Huh?”（ $(foo)的值是$(bar)，$(bar)的值是$(ugh)，$(ugh)的值是“Huh?”）可见，变量是可以使用后面的变量来...
Makefile经典教程（入门必备） - C/C++ - 清泛网 - 专注IT技能提升
...定义的值。如：
foo = $(bar)
bar = $(ugh)
ugh = Huh?
all:
echo $(foo)
我们执行“make all”将会打出变量$(foo)的值是“Huh?”（ $(foo)的值是$(bar)，$(bar)的值是$(ugh)，$(ugh)的值是“Huh?”）可见，变量是可以使用后面的变量来...