rubychan

ruby -wIlib bin/coderay bin/coderay -count
1337

rubychan

ruby-1.8.7 > @foo = 42
 => 42
ruby-1.8.7 > @foo
 => 42
ruby-1.8.7 > @foo = nil
 => nil
ruby-1.8.7 > @foo
 => nil
ruby-1.8.7 > remove_instance_variable :@foo
 => nil

rubychan

echo '(0..728).map{|i|(0..5).map{|j|("%06d"%i.to_s(3)*2)[j,6]}.min}.uniq' | ruby -e 'mate = (0...3**6).map { |i| "%06d" % i.to_s(3).to_i }.map { |s| (0..5).map { |j| s[j..-1] + s[0,j] }.min }.uniq; puts gets.chomp.each_byte.map { |b| mate[b] }.unshift(mate[128])'
122222
002021
002201
002121
002121
010102
002211
010111
002022

rubychan

rbx-2.0.0pre benchmark/search_bench.rb
      user     system      total        real
1  0.000217   0.000040   0.000257 (110.951148)
2  0.000106   0.000050   0.000156 ( 84.890900)
4  0.000165   0.000100   0.000265 (434.183999)
8  0.000453   0.000276   0.000729 (440.761576)

rubychan

rbx -v
rubinius 2.0.0dev (1.8.7 03ecc4ad yyyy-mm-dd JI) [x86_64-apple-darwin10.7.4]
with patch https://gist.github.com/1020720

String#gsub

time rbx -e 's = "." * 16_000_000; n = 1; c = s.size / n; (0...n).map { |i| Thread.new { s[c * i, c].gsub(".", "-") }}.map(&:join)'
real	0m33.407s
user	0m33.437s
sys	0m0.074s

rubychan

diff --git a/vm/builtin/regexp.cpp b/vm/builtin/regexp.cpp
index 32031b8..d510f5d 100644
--- a/vm/builtin/regexp.cpp
+++ b/vm/builtin/regexp.cpp
@@ -264,7 +264,7 @@ namespace rubinius {
       forced_encoding_ = true;
     }
 
-    thread::Mutex::LockGuard lg(state->shared.onig_lock());
+    // thread::Mutex::LockGuard lg(state->shared.onig_lock());

rubychan

rbx -v
rubinius 2.0.0dev (1.8.7 03ecc4ad yyyy-mm-dd JI) [x86_64-apple-darwin10.7.4]


String#gsub

time rbx -e 's = "." * 16_000_000; n = 1; c = s.size / n; (0...n).map { |i| Thread.new { s[c * i, c].gsub(/./, "-") }}.map(&:join)'
real	0m32.890s
user	0m32.896s
sys	0m0.098s

rubychan

(built from rvm)
> rbx-head run multi-slice
rubinius 1.2.4dev (1.8.7 25a8922d yyyy-mm-dd JI) [x86_64-apple-darwin10.7.4]
                                    user     system      total        real
multi-slice:                    4.837239   0.008982   4.846221 (  9.869563)
Multi-Threaded: 3.0 MB in 5.12s = 0.6 MB/s @ 18 threads
Single-Threaded: 3.0 MB in 4.75s = 0.6 MB/s

(built from rvm)
> rbx-head-nhydra run multi-slice

rubychan

Benchmarking with CodeRay 0.9.7:

real	0m4.007s
user	0m3.933s
sys	0m0.068s

Benchmarking with latest CodeRay:

real	0m2.090s
user	0m2.056s

rubychan

Index: lib/coderay/scanners/ruby/patterns.rb
===================================================================
--- lib/coderay/scanners/ruby/patterns.rb	(revision 706)
+++ lib/coderay/scanners/ruby/patterns.rb	(working copy)
@@ -33,18 +33,7 @@
       add(RESERVED_WORDS, :reserved).
       add(PREDEFINED_CONSTANTS, :pre_constant)
 
-    if /\w/u === '∑'
-      # MRI 1.8.6, 1.8.7