Rebol Programming/flag-face

< Rebol Programming

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USAGE:

FLAG-FACE face 'flag

DESCRIPTION:

Sets a flag in a VID face.

FLAG-FACE is a function value.

ARGUMENTS

face -- (Type: object)
flag -- (Type: any)

SOURCE CODE

flag-face: func [
    "Sets a flag in a VID face." 
    face [object!] 
    'flag
][
    if none? face/flags [face/flags: copy [flags]] 
    if not find face/flags 'flags [face/flags: copy face/flags insert face/flags 'flags] 
    append face/flags flag
]

Retrieved from "https://en.wikibooks.org/wiki/Rebol_Programming/flag-face"