sonkm3

# this does not works. map called once.
p [1..10].map{|i|rand(9)}.join('')
# > "1"

# this works.
p [*1..10].map{|i|rand(9)}.join('')
# > "5012242033"

# difference is [*1..10] and [1..10]
# "*" expands Range object to list, but both are "Array" Class. strange...

sonkm3

require "openssl"
key = "123"
base_string = "abc"
 
hash = OpenSSL::HMAC.digest(OpenSSL::Digest::SHA1.new, key, base_string)
p [hash].pack('m').gsub(/\n/, '')

sonkm3

require "cgi"
p CGI.escape("abc+&%")

# "abc%2B%26%25"

sonkm3

def get_query_string(query_hash)
  query_array = []

  query_hash.each{|key, val| val ? query_array.push([key, val].join('=')) : nil}
  query_string = query_array != [] ? query_array.join('&') : ''
end

query_hash = {"a"=> 1, "c" =>nil,  "b"=>3}
p get_query_string(query_hash)

sonkm3

hash1 = {:b => 1, :a => 2}
# => {:b=>1, :a=>2}
Hash[hash1.sort_by{|key, val|key}]
# => {:a=>2, :b=>1}
Hash[hash1.sort]
# => {:a=>2, :b=>1}

# sort by value
Hash[hash1.sort_by{|key, val|val}]
# => {:b=>1, :a=>2}

sonkm3

hash1 = {:a=> 1, :b=>2}
hash2 = {}

hash2[:b] = 3
p hash2

hash2.update(hash1)
p hash2

#{:b=>3}

sonkm3

class AdminHandler(webapp.RequestHandler):
    @util.login_required
    def get(self):
        csrf_key = self._generate_csrf_key()
        # pass csrf key as template parameter

    @util.login_required
    def post(self):
        if users.is_current_user_admin():
            if not self._check_csrf_key(self.request.get('csrf_key')):

sonkm3

# -*- coding: utf-8 -*-
# simple generator function
def generator1(limit):
  for count in range(limit):
    yield count

# simple generator function with return
def generator2(limit, stop):
  for count in range(limit):
    if count > stop:

sonkm3

def gen1():
  count = 0
  while True:
    count = count + 1
    print count
    if count > 10:
      return
    if count == 5:
      print 'raise!'
      raise '5!!!'

sonkm3

# -*- coding: utf-8 -*-
import tweepy

consumer_token = ''
consumer_secret = ''
access_token = ''
access_secret = ''


def get_tweets(api, screen_name):