Wikibooks

Rebol Programming/header-rules

< Rebol Programming
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USAGE:

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HEAD? series

DESCRIPTION:

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Returns TRUE if a series is at its head.

HEAD? is an action value.

ARGUMENTS

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  • series -- (Type: series port)

SOURCE CODE

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head?: native[
  "Returns TRUE if a series is at its head." 
  series [series! port!]
]
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