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511de900ba
- Update some sheets which have very long sections - Remove `layout: 2017/sheet` (everything has the same layout now) - Remove outdated sheets
593 B
593 B
title, category, tags, intro
| title | category | tags | intro | |
|---|---|---|---|---|
| Ruby 2.1 | Ruby |
|
Quick reference to the [new features in Ruby 2.1](https://www.ruby-lang.org/). |
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
)