Array with several strings is concatenated

Question

Array with more than one string separated with space produces array with one concatenated string. IMHO, it should raise syntax error. Is this behavior correct?

["1" "2" "3"]
#=> ["123"]

sawa · Accepted Answer · 2013-05-18 15:02:24Z

4

This has nothing to do with array. It is a feature of string literal. If you write string literals in quotes next to each other, it represents the string that is given by the concatenation.

answered May 18, 2013 at 15:02

sawa

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3 Comments

user229044 Over a year ago

Yes: "1" "2" "3" => "123"

p0deje Over a year ago

Got it. Is there any reason behind this?

DMKE Over a year ago

I think the rationale goes back to C where you have the same feature. Yet, you cannot to something like "error in " __FILE__ ":" __LINE__ which is valid in C.

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