Symbol (programming): Difference between revisions

Revision as of 20:10, 17 July 2011

Revision as of 20:16, 17 July 2011

Line 64:

<source lang=ruby>

my_symbol = :a

my_symbol = :"aan identifier"

</source>

Symbols can be [[String interpolation|interpolated]]:

<source lang=ruby>

money = :"#{2+3} dollars" #=> :"5 dollars"

print "I have #{money}" #=> "I have 5 dollars"

</source>

Strings can be coerced into symbols, vice versa:

Line 82 ⟶ 77:

my_symbol.length #=> 11

my_symbol.class #=> Symbol

my_symbol.to_s.reverse.to_sym #=> :dlrow_olleh

</source>

Symbols as keys of an associative array: