begins-rest0

returns the remainder of the string if the beginning matches

http://awwx.ws/begins-rest0.arc:

(def begins-rest (pattern s)
  (if (begins s pattern)
       (cut s (len pattern))))

Examples

arc> (begins-rest "abc" "abcdef")
"def"

arc> (begins-rest "abc" "abc")
""

arc> (begins-rest "abc" "defghi")
nil

Prerequisites

This hack depends on arc3.1.

License

Same as Arc.

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