| #!/usr/bin/ruby | |
| require 'benchmark' | |
| include Benchmark | |
| pi = 3.14 | |
| n = 1000000 | |
| Benchmark.benchmark(" "*7 + CAPTION, 7, FMTSTR) do |x| | |
| to_i = x.report("to_i:") { n.times { pi != pi.to_i } } | |
| gsub = x.report("gsub:") { n.times { pi.to_s.gsub(/^.*\.(.*)$/, '\1').to_i > 0 } } |
| # Finds equilibrium index of a sequence. | |
| # Returns equilibrium index or -1 if no equilibrium exists. | |
| def equi(arr) | |
| left = sums(arr) | |
| right = sums(arr.reverse) | |
| for i in 1..(arr.length) do | |
| return (i-1) if left[i-1] == right[-i] | |
| end | |
| -1 |
| #!/bin/bash | |
| # Filter requests to Rails application by IP address | |
| # | |
| # Usage: | |
| # tail -f log/production.log | log_filter.sh [IP] | |
| # | |
| # By default tries to obtain current IP address from $SSH_CLIENT or by querying http://ifconfig.me | |
| if [[ $# -eq 0 ]]; then | |
| if [[ -z $SSH_CLIENT ]]; then | |
| ip=$(curl -s http://ifconfig.me) |
| #!/usr/bin/env bash | |
| if ! which openssl > /dev/null; then | |
| echo Install openssl | |
| exit 1 | |
| fi | |
| if ! which curl > /dev/null; then | |
| echo Install curl | |
| exit 1 |
This gist shows buggy behavior of == in Ruby 1.8.7. This affects case equality (===) too because by default === calls == internally unless redefined in specific class (like Range or Regexp).
class A
def ==(other)
puts "In A: calling == against #{other}"
super
end
end
| require 'hashie_walker' # https://github.com/monterail/hashie_walker | |
| require 'active_support/inflector' | |
| hash = { | |
| "CamelCased" => { | |
| "AnotherOne" => { | |
| "Foo" => "Bar", | |
| "FooFooFoo" => "Dupa" | |
| } | |
| } |
| class Buffer | |
| def initialize(size = 1_000, &blk) | |
| @size = size | |
| @callback = blk | |
| @queue = [] | |
| @lock = Mutex.new | |
| end | |
| def <<(object) | |
| @lock.synchronize do |
| # Usage: | |
| # | |
| # redis = Redis.new(url: ENV["REDIS_URL"]) | |
| # keys = redis.scan_each(match: 'foo*', count: 1_000) | |
| # keys.extend(EachWithProgress) | |
| # | |
| # keys.each_with_progress do |key| | |
| # redis.del(key) | |
| # end |
| #!/usr/bin/env ruby | |
| require 'optparse' | |
| require 'json' | |
| require 'net/http' | |
| options = {} | |
| OptionParser.new do |opts| | |
| opts.banner = "Usage: es_bench.rb [options]" | |
| opts.on("-c COUNT", "--count=COUNT", "Number of requests") do |count| |