mitchty

def type(name)                                                           
  ENV['PATH'].split(File::PATH_SEPARATOR).each do |p|
    que = p + File::SEPARATOR + name
    return que if File.exists?(que) and File.executable?(que)
  end
  false
end
type 'foo'        # false
type 'openssl'    # '/usr/bin/openssl'

mitchty

class Hash
  def diff(this)
    self.dup.delete_if { |key, val|
      this[key] == val
      }.merge(this.dup.delete_if { |key, val| self.has_key?(key) } )
  end
end

mitchty

# So to explain this contrived example a bit. Say you have an array of input that you wanted to match with
# multiple regexes how do you in ~1 line match the lot of things.
#
# So say for a given input of %w/ab abc abcde bcde bc efgh etc/
# You have multiple regexes to match against, in this case its just an array of strings that we build regexes off of.
#
# This is my kitbash first try.
#
# Anyone have any better ideas? I know you could just union them both if === works as your comparison:
# %w/ab abc bc bcde efgh/ & %w/ab bc/

mitchty

main> [[:a], nil, :b, nil, nil].collect!{|x| Array(x)}
=> [[:a], [], [:b], [], []]

mitchty

main> RVM::Environment.new.list_strings
=> ["jruby-1.6.5",
 "macruby-0.10",
 "rbx-head",
 "ruby-1.8.6-p420",
 "ruby-1.8.7-p352",
 "ruby-1.9.2-p290",
 "ruby-1.9.3-p0"]
main> RVM::Environment.new.list.rubies
=> ["jruby-1.6.5",

mitchty

$ ruby -e 'puts "\e(0\e6n\e(B"'
┼

$ ruby -e 'puts "\e(0\e6m\e(B"'
└

mitchty

my $var = "anchor1 lkajfdlkj
match
till
the
next
anchor2
more
stuff
anchor3
blah

mitchty

Sampling process 28334 for 3 seconds with 1 millisecond of run time between samples
Sampling completed, processing symbols...
Analysis of sampling Google Chrome Helper (pid 28334) every 1 millisecond
Process:         Google Chrome Helper [28334]
Path:            /Users/Shared/Applications/Google Chrome.app/Contents/Versions/15.0.874.121/Google Chrome Helper.app/Contents/MacOS/Google Chrome Helper
Load Address:    0x6d000
Identifier:      com.google.Chrome.helper
Version:         15.0.874.121 (874.121)
Code Type:       X86 (Native)
Parent Process:  Google Chrome [28232]

mitchty

#!/usr/bin/env ruby
# encoding: utf-8

# irb3 - Runs an IRB-esque prompt (but it's NOT really IRB!) over multiple
#        versions of Ruby at once (using RVM)
#        
#        By Peter Cooper, BSD licensed
#
#        Main dependency is term-ansicolor for each impl:
#          rvm exec gem install term-ansicolor

mitchty

$ cat eval_with_comment.rb 
b = binding
input = $stdin.read.split(/\n/)
input.each do |line|
  line.gsub(/\s+\#.*$/, %q{})
  out = eval line, b
  puts "#{line} \# #{out.inspect}"
end
$ cat a.rb | ruby eval_with_comment.rb 
%w/a b c d/ # ["a", "b", "c", "d"]