REBOL 3 Functions: any-function?

any-function? value

Return TRUE if value is any type of function.

Arguments:

value [any-type!]

Description

Returns true if the value is any type of function and returns false for all other values.

print any-function? :find
true

print any-function? :+
true

print any-function? func [] [print "hi"]
true

print any-function? 123
false

To learn what datatypes are functions:

print any-function!
native! action! rebcode! command! op! closure! function!