Rebol Programming/do-boot
Appearance
USAGE:
[edit | edit source]DO-BOOT target args dependent
DESCRIPTION:
[edit | edit source]Does a value only if it and its file (URL) and it's dependent exists.
DO-BOOT is a function value.
ARGUMENTS
[edit | edit source]- target -- (Type: any)
- args -- (Type: any)
- dependent -- (Type: any)
SOURCE CODE
[edit | edit source]do-boot: func [ {Does a value only if it and its file (URL) and it's dependent exists.} target args dependent /local check dir ][ check: func [target /local tmp] [ if exists? target [return make file! 1] if exists? system/options/home/:target [return system/options/home] none ] if target [ if dependent [dir: check dependent] if none? dir [dir: check target] if dir [ dir: append copy dir target if exists? dir [do/args dir args return true] ] ] false ]