Each loop with basic array vs ruby arrays

Question

I noticed both these methods for creating each loops in ruby on rails generate the exact same result.

What is the difference between doing the common array approach [] and the other ruby way %w()? (by the way, what is the real name for this second approach?)

Common Array

<% ['one', 'two', 'three', 'four', 'five'].each do |k| %>
    <div class="panel-<%= k %>">Panel <%= k.capitalize %></div>
<% end %>

Ruby

<% %w(one two three four five).each do |k| %>
    <div class="panel-<%= k %>">Panel <%= k.capitalize %></div>
<% end %>

@mudasobwa what does `%w` stand for, are there other kinds of prefixes for arrays? — gespinha, Jul 16 '15 at 10:22
there exists some of these shortcodes. for an overview with some explanation look at https://simpleror.wordpress.com/2009/03/15/q-q-w-w-x-r-s/ — rob, Jul 16 '15 at 10:23
http://ruby-doc.org/core-2.2.0/doc/syntax/literals_rdoc.html#label-Percent+Strings — Aleksei Matiushkin, Jul 16 '15 at 10:24
*"... methods for creating each loops"* - both loops are identical and unrelated to your question, `[...]` and `%w(...)` are different ways to create an *array*. — Stefan, Jul 16 '15 at 11:00

score 0 · Accepted Answer · edited May 23 '17 at 10:24

0

Both are the same.

You can else try

%w[]

for creating array of strings. Consider this SO answer for further documentation

edited May 23 '17 at 10:24

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answered Jul 16 '15 at 10:33

Alex Antonov

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Each loop with basic array vs ruby arrays

Common Array

Ruby

1 Answers1