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Ruby, 43 bytes ->n{(1..n).map{|i|" "*(n-i)+?/*i+?\\*i}*$/} ->n{ } # lambda (1..n).map{|i| } # map over 1 to n ...
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#1: Initial revision
by
snail_
·
2021-01-05T07:02:10Z (almost 4 years ago)
# [Ruby], 43 bytes
<!-- language-all: lang-ruby -->
->n{(1..n).map{|i|" "*(n-i)+?/*i+?\\*i}*$/}
->n{ } # lambda
(1..n).map{|i| } # map over 1 to n
" "*(n-i)+?/*i+?\\*i # spaces plus / plus \
*$/ # join with newline
[Try it online!][TIO-kjjmyy0h]
The special global variable `$/` is initialized to newline by default, which is shorter than `?\n` or `"\n"`.
From [globals.rdoc](https://ruby-doc.org/core-3.0.0/doc/globals_rdoc.html):
>`$/`
>
>The input record separator, newline by default. Aliased to `$-0`.
[Ruby]: https://www.ruby-lang.org/
[TIO-kjjmyy0h]: https://tio.run/##KypNqvyfVpqnYPtf1y6vWsNQTy9PUy83saC6JrNGSUFJSyNPN1NT215fK1PbPiZGK7NWS0W/9n9BUWZeiQJQn55GempJsYamXkl@fKbmf3MA "Ruby – Try It Online"