Skip to content

Instantly share code, notes, and snippets.

@fela
fela / selfX.rb
Created July 4, 2013 15:26
The output of this script is equal to the script itself.
#!/usr/bin/env ruby
x=<<'X'
#!/usr/bin/env ruby
x=<<'X'
x+="X\n"
x=x.split("\n")
x=x[0..1]+x[0..7]+x[2..-2]
puts x.join("\n")
X
x+="X\n"
@elazarl
elazarl / cp.go
Last active June 27, 2020 14:42
Unfortunately, searching for "golang copy file" gives subtly wrong code snippets (e.g. https://groups.google.com/d/msg/golang-nuts/JNyQxQLyf5o/kbGnTUK32TkJ that don't check close error code). This is an attempt to copy file content from `src` to `dst`
package cp
import (
"io"
"os"
)
func cp(dst, src string) error {
s, err := os.Open(src)
if err != nil {
@t2
t2 / application.rb
Created December 12, 2011 02:13
Formatting Rails form elements for Twitter Bootstrap error validation
ActionView::Base.field_error_proc = Proc.new do |html_tag, instance|
html = %(<div class="field_with_errors">#{html_tag}</div>).html_safe
# add nokogiri gem to Gemfile
elements = Nokogiri::HTML::DocumentFragment.parse(html_tag).css "label, input"
elements.each do |e|
if e.node_name.eql? 'label'
html = %(<div class="clearfix error">#{e}</div>).html_safe
elsif e.node_name.eql? 'input'
if instance.error_message.kind_of?(Array)
html = %(<div class="clearfix error">#{html_tag}<span class="help-inline">&nbsp;#{instance.error_message.join(',')}</span></div>).html_safe