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How to have the formatter wrap code with IntelliJ?
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The "Ensure right margin is not exceeded" option is in File / Settings / Editor / Code Style / Java / Wrapping and Braces / Keep when reformatting
– Aaron
Jan 3 '16 at 8:11
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Save image from URL by paperclip
...ay:
require "open-uri"
class User < ActiveRecord::Base
has_attached_file :picture
def picture_from_url(url)
self.picture = open(url)
end
end
Then simply :
user.picture_from_url "http://www.google.com/images/logos/ps_logo2.png"
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At runtime, find all classes in a Java application that extend a base class
...the ServiceLoader mechanism.
Also many people roll their own by having a file in a well known classpath location (i.e. /META-INF/services/myplugin.properties) and then using ClassLoader.getResources() to enumerate all files with this name from all jars. This allows each jar to export its own provi...
Resetting remote to a certain commit
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If you want a previous version of file, I would recommend using git checkout.
git checkout <commit-hash>
Doing this will send you back in time, it does not affect the current state of your project, you can come to mainline
git checkout mainline
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Create Directory if it doesn't exist with Ruby
... nested directories. Assuming foo does not exist, you will receive no such file or directory error for:
Dir.mkdir 'foo/bar'
# => Errno::ENOENT: No such file or directory - 'foo/bar'
To create nested directories at once, FileUtils is needed:
require 'fileutils'
FileUtils.mkdir_p 'foo/bar'
# =&...
Batch files - number of command line arguments
Just converting some shell scripts into batch files and there is one thing I can't seem to find...and that is a simple count of the number of command line arguments.
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Disable ActiveRecord for Rails 4
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For existing applications:
1. Remove database adapter gems from your Gemfile (mysql2, sqlite3, etc.)
2. Change your config/application.rb
Remove require 'rails/all line and require frameworks (among those available in your rails version, the list varies, do not just copy) you want to use, for e...
Can we instantiate an abstract class?
... compile both your classes. Suppose you put those classes in two different files:
My.java:
abstract class My {
public void myMethod() {
System.out.print("Abstract");
}
}
Poly.java:
class Poly extends My {
public static void main(String a[]) {
My m = new My() {};
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How to enable cross-origin resource sharing (CORS) in the express.js framework on node.js
....js that will support cross-domain scripting, while still providing static files from a public directory. I'm using the express.js and am not really sure how to allow cross-domain scripting ( Access-Control-Allow-Origin: * ).
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Fatal error: Maximum execution time of 300 seconds exceeded
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add it at the very top of your php file
– Tules
Oct 6 '11 at 21:24
2
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