tomas-stefano

lib_dir = File.expand_path(File.join(File.dirname(__FILE__), 'lib'))
$LOAD_PATH.unshift(lib_dir) unless $LOAD_PATH.include?(lib_dir)

tomas-stefano

#
#   Rakefile with a C Library with the following tree:
#├── library
#│   ├── something.c
#│   └── something.h
#├── specifications
#│   ├── all_specifications.c
#│   ├── all_specifications.o
#│   ├── something_spec.c
#│   └── something_spec.o

tomas-stefano

// dict.h

typedef struct dictEntry {
    void *key;
    void *val;
    struct dictEntry *next;
} dictEntry;

typedef struct dictht {
    dictEntry **table;

tomas-stefano

/* Hash Tables Implementation.
 *
 * This file implements in memory hash tables with insert/del/replace/find/
 * get-random-element operations. Hash tables will auto resize if needed
 * tables of power of two in size are used, collisions are handled by
 * chaining. See the source code for more information... :)
 *
*/
#include <stdlib.h>

tomas-stefano

>> env = RVM::Environment.new('1.9.2')

>> env.env_contents
=> "export PATH=\"/Users/tomas/.rvm/gems/ruby-1.9.2-p0/bin:/Users/tomas/.rvm/gems/ruby-1.9.2-p0@global/bin:/Users/tomas/.rvm/rubies/ruby-1.9.2-p0/bin:/Users/tomas/.rvm/bin:$PATH\"\nRUBY_VERSION='ruby-1.9.2-p0'\nexport RUBY_VERSION\nGEM_HOME='/Users/tomas/.rvm/gems/ruby-1.9.2-p0'\nexport GEM_HOME\nGEM_PATH='/Users/tomas/.rvm/gems/ruby-1.9.2-p0:/Users/tomas/.rvm/gems/ruby-1.9.2-p0@global'\nexport GEM_PATH\nBUNDLE_PATH='/Users/tomas/.rvm/gems/ruby-1.9.2-p0'\nexport BUNDLE_PATH\nMY_RUBY_HOME='/Users/tomas/.rvm/rubies/ruby-1.9.2-p0'\nexport MY_RUBY_HOME\nIRBRC='/Users/tomas/.rvm/rubies/ruby-1.9.2-p0/.irbrc'\nexport IRBRC\nrvm_ruby_string='ruby-1.9.2-p0'\nexport rvm_ruby_string\nunset rvm_gemset_name\nunset MAGLEV_HOME\n"

tomas-stefano

###### One way

  ActiveRecord::Base.record_timestamps = false

  # set timestamps manually

  ActiveRecord::Base.record_timestamps = true

###### Other way

tomas-stefano

require 'mkmf'

extension_name = 'relation_table'
dir_config(extension_name)

# Source files with header and *.c and *.o files
#
RELATION_HEADER_PATH = File.expand_path(File.join(File.dirname(__FILE__), '..', 'source'))

RELATION_HEADER_FLAG = "-I #{RELATION_HEADER_PATH}"

tomas-stefano

Simple Query
10.000 Queries     0.320000   0.000000   0.320000 (  0.333302)
100.000 Queries    3.090000   0.010000   3.100000 (  3.115193)
1.000.000 Queries  30.850000   0.080000  30.930000 ( 31.036174)

Add some little complexity =p

10.000 Queries      0.550000   0.000000   0.550000 (  0.551271)
100.000 Queries     5.550000   0.020000   5.570000 (  5.643197)
1.000.000 Queries   55.670000   0.180000  55.850000 ( 56.547011)

tomas-stefano

open('some_file', "r:UTF-8") do |file|
  puts file.external_encoding.name
  p    file.internal_encoding
  file.each do |line|
    p [line.encoding.name, line]
  end
end

tomas-stefano

10.000 Queries      0.030000   0.000000   0.030000 (  0.031400)
100.000 Queries     0.300000   0.010000   0.310000 (  0.307062)
1.000.000 Queries   3.070000   0.060000   3.130000 (  3.150164)

A Little more complexity =p

10.000 Queries      0.090000   0.000000   0.090000 (  0.086945)
100.000 Queries     0.840000   0.020000   0.860000 (  0.857581)
1.000.000 Queries   8.360000   0.200000   8.560000 (  8.568261)