keepflags() and remflags()

keepflags(<list>, <flags>[, <delimiter>[, <output separator>[, <form>]]])
remflags(<list>, <flags>[, <delimiter>[, <output separator>[, <form>]]])

keepflags() returns the objects in <list> that have the flags in <flags>. remflags() returns the ones that do not.

<flags> is a list of flag letters, as andflags() takes, after & for all of them or | for any of them. Without either it is #-1 FUNCTION REQUIRES '&' OR '|' FOR FLAG MATCHES. P, R, T and E match a type, and ! before a letter matches its absence.

An element that names no object is reported as a failed lookup and left out. Each object is returned as a dbref, or as an objid when <form> is 1. The result is separated by <output separator>, which is <delimiter> by default.

keepflags() and remflags() come from RhostMUSH.

> think keepflags(#1 #2, &W)
#1
> think remflags(#1 #2, |WR)
> think keepflags(#1 #2, W)
#-1 FUNCTION REQUIRES '&' OR '|' FOR FLAG MATCHES

::: seealso