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Dmytro Rymar drymar

  • Ukraine, Kyiv
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@bantic
bantic / rails_route_recognizer.rb
Last active September 9, 2022 12:22
Programmatically list all routes (/paths) from within a rails app.
class RouteRecognizer
attr_reader :paths
# To use this inside your app, call:
# `RouteRecognizer.new.initial_path_segments`
# This returns an array, e.g.: ['assets','blog','team','faq','users']
INITIAL_SEGMENT_REGEX = %r{^\/([^\/\(:]+)}
def initialize
@MicahElliott
MicahElliott / rbenv-howto.md
Created April 17, 2012 18:11
Setting up and installing rbenv, ruby-build, rubies, rbenv-gemset, and bundler

Setting up and installing rbenv, ruby-build, rubies, rbenv-gemset, and bundler

This guide enables you to install (ruby-build) and use (rbenv) multiple versions of ruby, isolate project gems (gemsets and/or bundler), and automatically use appropriate combinations of rubies and gems.

TL;DR Demo

# Ensure system is in ship-shape.

aptitude install git zsh libssl-dev zlib1g-dev libreadline-dev libyaml-dev

@keeguon
keeguon / countries.json
Created April 5, 2012 11:11
A list of countries in JSON
[
{name: 'Afghanistan', code: 'AF'},
{name: 'Åland Islands', code: 'AX'},
{name: 'Albania', code: 'AL'},
{name: 'Algeria', code: 'DZ'},
{name: 'American Samoa', code: 'AS'},
{name: 'AndorrA', code: 'AD'},
{name: 'Angola', code: 'AO'},
{name: 'Anguilla', code: 'AI'},
{name: 'Antarctica', code: 'AQ'},
@mattetti
mattetti / gist:1015948
Created June 9, 2011 02:44
some excel formulas in Ruby
module Excel
module Formulas
def pmt(rate, nper, pv, fv=0, type=0)
((-pv * pvif(rate, nper) - fv ) / ((1.0 + rate * type) * fvifa(rate, nper)))
end
def ipmt(rate, per, nper, pv, fv=0, type=0)
p = pmt(rate, nper, pv, fv, 0);
ip = -(pv * pow1p(rate, per - 1) * rate + p * pow1pm1(rate, per - 1))
(type == 0) ? ip : ip / (1 + rate)