dwaite

  # Performs normal match and returns MatchData object from $~ or nil.
  def match(str)
    unless str
      Regexp.last_match = nil
      return nil
    end

    str = StringValue(str)

    Regexp.last_match = search_region(str, 0, str.size, true)

dwaite

  # Performs normal match and returns MatchData object from $~ or nil.
  def match(str)
    unless str
      Regexp.last_match = nil
      return nil
    end

    str = StringValue(str)

    Regexp.last_match = search_region(str, 0, str.size, true)

dwaite

def foo
  puts "before: '#{$~}'"
  /foo/ =~ 'foo'
  puts "after: '#{$~}'"
  clear_last_match
  puts "after call: '#{$~}' (should still be set)"
end

def clear_last_match
  $~ = nil

dwaite

ruby-1.9.2-p180 :008 > z = Fiber.new{Thread.current}.resume
 => #<Thread:0x00000100887678 run> 
ruby-1.9.2-p180 :009 > Thread.current
 => #<Thread:0x00000100887678 run> 
ruby-1.9.2-p180 :010 > z = Fiber.new{Thread.current.object_id}.resume
 => 2151955260 
ruby-1.9.2-p180 :011 > Thread.current.object_id
 => 2151955260 

dwaite

$ RBXOPT=-Xprofile\ -Xprofiler.graph\ -Xprofiler.full_report rbx -S rspec spec -f p &>foo
bash-3.2$ vim foo
bash-3.2$ grep Array#map foo
                  0.00      0.22          1               Array#map [74]
[74]      0.3     0.00      0.22          1           Array#map [74]
                  0.00      0.22          1               Array#map [74]
                  0.00      0.22          4               Array#map [76]
[76]      0.3     0.00      0.22          4           Array#map [76]
                  0.00      0.22          4               Array#map [76]
                  0.00      0.22          1               Array#map [80]

dwaite

#include <stdio.h>

/* prints 78.882004 */
int main(int argc, char** argv) {
   float f = 78.882;
   printf("%f\n", f);
   return 0;
}

dwaite

We couldn’t find that file to show.

dwaite

#!/usr/bin/ruby
# Set two thread locals
Thread.current["foo"] = "fooval"
Thread.current["bar"] = "barval"

puts [Thread.current["foo"], Thread.current["bar"]]
# prints:
# fooval
# barval

dwaite

 ____ ____
|         |
|__ \ / __|
|   / \   |
|____ ____|

dwaite

Keybase proof

I hereby claim:

• I am dwaite on github.
• I am dwaite (https://keybase.io/dwaite) on keybase.
• I have a public key whose fingerprint is B6E6 30B2 71A7 1FF9 393E 4E6C 5E52 A11A 5979 897C

To claim this, I am signing this object: