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Examples of how Ruby 2.6 is more functional than ever! πŸ‘πŸŽ‰πŸš€
raise 'Wrong Ruby version!' unless RUBY_VERSION >= '2.6.0'
module Strings
Trim = -> str { String(str).strip }
Replace = -> (sub, new_sub, str) { String(str).gsub(sub, new_sub) }
LowerCase = -> str { String(str).downcase }
end
# -- Alternative syntax --
Slugify = # Slugify =
Strings::Trim # Strings::Trim \
.>> Strings::LowerCase # >> Strings::LowerCase \
.>> Strings::Replace.curry[' ', '-'] # >> Strings::Replace.curry[' ', '-']
# -- Alternative syntax --
slug = Slugify.(' I WILL be a url slug ') # Slugify.call(' I WILL be a url slug ')
# Slugify[' I WILL be a url slug ']
p slug # => "i-will-be-a-url-slug"
def slugify(value)
String(value)
.then(&Strings::Trim)
.then(&Strings::LowerCase)
.then(&Strings::Replace.curry[' ', '-'])
end
p slugify(' I will be a url SLUG ') # => "i-will-be-a-url-slug"
#####################
# Fuctional Objects #
#####################
#
# -- Static/Singleton methods --
#
module Slugify2
extend self
def call(value)
String(value)
.then(&method(:trim))
.then(&method(:lower_case))
.then(&method(:replace_spaces_by_dashes))
end
private
def trim(str)
str.strip
end
def lower_case(str)
str.downcase
end
def replace_spaces_by_dashes(str)
str.gsub(' ', '-')
end
end
# -- Alternative syntax --
p Slugify2.(' I will BE a url slug ') # Slugify2.call(' I will BE a url slug ')
#
# -- Instances --
#
class Slugifier
def initialize(sub, new_sub)
@sub = sub
@new_sub = new_sub
end
def call(value)
String(value)
.then(&method(:trim))
.then(&method(:lower_case))
.then(&method(:replace))
end
private
def trim(str)
str.strip
end
def lower_case(str)
str.downcase
end
def replace(str)
str.gsub(@sub, @new_sub)
end
end
Slugify3 = Slugifier.new(' ', '-')
# -- Alternative syntax --
p Slugify3.(' I will be a URL slug ') # Slugify3.call(' I will be a URL slug ')
#
# -- Instances and Lambdas --
#
class Slugifier2
Trim = -> str { String(str).strip }
Replace = -> (sub, new_sub, str) { String(str).gsub(sub, new_sub) }
LowerCase = -> str { String(str).downcase }
def initialize(sub, new_sub)
@sub = sub
@new_sub = new_sub
end
def call(value)
String(value)
.then(&Trim)
.then(&LowerCase)
.then(&Replace.curry[' ', '-'])
end
end
Slugify4 = Slugifier2.new(' ', '-')
# -- Alternative syntax --
p Slugify4.(' I will Be a urL slug ') # Slugify4.call(' I will Be a urL slug ')
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