In Date§
See primary documentation in context for method pred
method pred(Date:D: --> Date:D)
Returns a Date
of the previous day. "pred" is short for "predecessor".
say Date.new("2016-01-01").pred; # OUTPUT: «2015-12-31»
In IO::Path§
See primary documentation in context for method pred
method pred(IO::Path:D: --> IO::Path:D)
Returns a new IO::Path
constructed from the invocant, with .basename
changed by calling Str.pred
on it.
"foo/file02.txt".IO.pred.say; # OUTPUT: «"foo/file01.txt".IO»
In Str§
See primary documentation in context for method pred
method pred(Str:D: --> Str:D)
Returns the string decremented by one.
String decrementing is "magical" just like string increment (see succ). It fails on underflow
'b0'.pred; # OUTPUT: «a9» 'a0'.pred; # OUTPUT: Failure 'img002.png'.pred; # OUTPUT: «img001.png»
In Allomorph§
See primary documentation in context for method pred
method pred(Allomorph:D:)
Calls Numeric.pred
on the invocant's numeric value.
In role Enumeration§
See primary documentation in context for method pred
method pred(::?CLASS:D:)
say Freija.pred; # OUTPUT: «Oðin»
In enum Bool§
See primary documentation in context for routine pred
method pred(--> Bool:D)
Returns False
.
say True.pred; # OUTPUT: «False» say False.pred; # OUTPUT: «False»
pred
is short for "predecessor"; it returns the previous enum value. Bool is a special enum with only two values, False
and True
. When sorted, False
comes first, so False
is the predecessor to True
. And since False
is the "lowest" Bool enum value, its own predecessor is also False
.
In role Numeric§
See primary documentation in context for method pred
method pred(Numeric:D:)
Returns the number decremented by one (predecessor).