Ruby 2.1 Cheat Sheet in December 2024
Last Updated: 1 December 2024
README.md
Named arguments with defaults
# length is required
def pad(num, length:, char: "0")
num.to_s.rjust(length, char)
end
pad(42, length: 6) #=> "000042"
pad(42) #=> #<ArgumentError: missing keyword: length>
Module.prepend
prepend(
Module.new do
define_method ...
end
)
References
338+ more cheat sheets for you in December 2024
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