Is there a literal notation for an array of symbols?

ruby arrays symbols syntactic-sugar
m_x picture m_x · Jan 11, 2012 · Viewed 40.4k times · Source

I like this literal expression for an array of strings:

%w( i can easily create arrays of words )

I am wondering if there is a literal to get an array of symbols. I know I can do 

%w( it is less elegant to create arrays of symbols ).map( &:to_sym )

but it would be so wonderful just to use a literal.

Answer

David Grayson picture David Grayson · Jan 26, 2013

Yes! This is possible now in Ruby 2.0.0. One way to write it is:

%i{foo bar}  # => [:foo, :bar]

You can also use other delimiters, so you could also write %i(foo bar) or %i!foo bar! for example.

This feature was originally announced here:

http://www.ruby-lang.org/zh_TW/news/2012/11/02/ruby-2-0-0-preview1-released/

It is mentioned in the official documentation of Ruby here:

http://ruby-doc.org/core/doc/syntax/literals_rdoc.html#label-Percent+Strings

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