class Date class <<self # I like Time#now, this should have been included into Date def now; self.new(Time.now.year,Time.now.month,Time.now.day); end end end
Tag Archive for ruby
Date.now
Category: Uncategorized |
Tags: ruby
Add class methods for ruby classes
# Extend class methods for any ruby class class NameofClass class <<self # create class methods below def magic #insert your magic code here end end end # now #magic is available for NameofClass on a class level
Category: Uncategorized |
Tags: ruby
Parse HTML when reading atom feeds
# re-encode html escaped entities when reading atom feeds
def rss_html_parse(content)
content.gsub!("<","<")
content.gsub!(">",">")
content.gsub!("","")
content
end
Category: Uncategorized |
Tags: ruby
Bash functions for running rails unit and functional tests
# simple wrappers for running unit and functional tests in rails apps
# INSTEAD OF : ruby test/unit/user_test.rb
# DO THIS : test_unit user
test_unit () {
if [[ -n "$1" ]]; then
ruby test/unit/$1_test.rb;
else
"USAGE : test_unit [name_of_test]"
fi
}
# INSTEAD OF : ruby test/functional/users_controller_test.rb
# DO THIS : test_func user
test_func () {
if [[ -n "$1" ]]; then
ruby test/functional/$1_controller_test.rb;
else
"USAGE : test_func [name_of_test]"
fi
}
Ruby One-liner for Restoring One Table from a Huge SQL Dump
ruby -ne '@found=true if $_ =~ /^CREATE TABLE `foo`/i; next unless @found; exit if $_ =~ /^CREATE TABLE (?!`foo`)/i; puts $_;' giant_sql_dump.sql > foo.sql
print random lorem sentence
#!/usr/bin/env ruby -wKU
copy_to_use = "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Donec leo tellus, ornare ac, molestie eu, suscipit non, urna. Sed in felis. Vivamus justo dui, tempus vel, blandit sed, placerat sit amet, nunc. Praesent rhoncus quam nec risus. Etiam eu nulla eu sapien ultrices hendrerit. Nulla et metus ac ipsum vulputate varius. Nullam nec mauris nec nulla ornare fermentum. In a libero. Aliquam erat volutpat. Ut ornare. Ut nec libero a metus posuere tincidunt. Sed sed arcu. Maecenas lobortis, massa sit amet convallis eleifend, neque erat commodo sapien, ut varius dolor quam vitae lorem. In tellus. Nam eu dolor. Aliquam erat volutpat. Nulla eu arcu. Mauris dignissim, neque egestas rhoncus feugiat, magna diam varius elit, ut hendrerit diam sapien vel velit. Donec lobortis. Aenean mattis turpis sed odio. Donec suscipit lectus quis felis. In hac habitasse platea dictumst. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Nam interdum. Nulla facilisi. Donec facilisis. Phasellus tristique. Vestibulum pellentesque felis nec dui. Mauris dolor odio, mollis et, sollicitudin vitae, facilisis sed, enim. Duis velit. Nullam a augue. Aliquam erat volutpat. Aenean ut magna nec dui congue congue. Maecenas sagittis nisl ut neque. Nam facilisis urna sed purus luctus congue. Morbi interdum, ligula non ullamcorper faucibus, purus ipsum fermentum neque, in viverra nisi ante at turpis. Ut molestie gravida sapien. "
sentence = copy_to_use.split(". ")
random_sentence = sentence.sort_by{ rand }
print random_sentence[0] + "."
Simple Example of Threading in Ruby
def func1
i = 0
while i <= 5
puts "func1 at: #{Time.now}"
sleep(2)
i = i + 1
end
end
def func2
i = 0
while i <= 5
puts "func2 at: #{Time.now}"
sleep(1)
i = i + 1
end
end
puts "Start at: #{Time.now}"
t1 = Thread.new{func1()}
t2 = Thread.new{func2()}
t1.join
t2.join
puts "End at: #{Time.now}"
How to iterate through an array in Ruby
#A. Create an array names = %w[chris sandy josie billy suzie] #B. Find the length of the array and iterate through it names.length.times do |i| puts i.to_s + " " + names[i] end
Converting an array into YAML, Loading YAML into an array
#A. Import the YAML Library require 'yaml' #B. Create an array names = %w[chris sandy josie billy suzie] #Example 1 : Converting an array into YAML using: to_yaml yaml_example1 = names.to_yaml puts yaml_example1 #Example 2: Converting an array into YAML using: dump() yaml_example2 = YAML::dump(names) puts yaml_example2 #Example 3: Loading YAML back into an array using: load() array_example = YAML::load(yamloutput2) puts array_example