Zandelok_custom_functions

Description

This gem will help you extend the functionality of some standard Ruby classes. It also provides some custom methods.

Array

count_elements count elements in Array and return hash: element => count

[1, 1, 1, 1, 1, 2, 2, 3, 4].count_elements # will return {1=>5, 2=>2, 3=>1, 4=>1}

increase_with_index increase each element with its index

[1, 2, 3, 4].increase_with_index # will return [1, 3, 5, 7]

increase_with_position increase each element with its position

[1, 2, 3, 4].increase_with_position # will return [2, 4, 6, 8]

select_solo select all elements that are not repeated in the array

[1, 1, 2, 2, 2, 2, 2, 2, 3, 4].select_solo # will return [3, 4]

split_by_parity divide all elements into even and odd elements

[1, 1, 2, 2, 2, 2, 2, 2, 3, 4].split_by_parity # will return [[2, 2, 2, 2, 2, 2, 4], [1, 1, 3]]

String

camelcase convert dash/underscore delimited words into camel casing. The first word within the output capitalized only if the original word was capitalized

'the-stealth_warrior'.camelcase # will return 'theStealthWarrior'

count_chars count chars in String and return hash: element => count

'Hello world'.count_chars # will return {"H"=>1, "e"=>1, "l"=>3, "o"=>2, " "=>1, "w"=>1, "r"=>1, "d"=>1}

palindrome? check if a given string (case insensitive) is a palindrome

'Hello'.palindrome? # will return false

'loL'.palindrome? # will return true

Custom methods

multiply multiply all values (accept only integers)

Zandelok::Functions.multiply(1, 2, 3, 4) # will return 24

missing_numbers return an array with missing numbers between min and max values (accept only array)

Zandelok::Functions.missing_numbers([1, 2, 3, 10]) # will return [4, 5, 6, 7, 8, 9]

missing_numbers generate hashtag from array or string (hashtag max length 140 symbols)

Zandelok::Functions.generate_hashtag([1, 2, 3, 10]) # will return '#12310'

Zandelok::Functions.generate_hashtag('Hello world with ruby') # will return '#HelloWorldWithRuby'