.DT
copy
$MUDNAME$ driver help
copy
.SH Name
.SI 5
copy() - recursively duplicate a value
.EI
.SH Synopsis
.SI 5
mixed copy( mixed arg );
.EI
.SH Description
.SP 5 5
copy() returns a value with exactly the same value as `arg', but with
all reference types (mappings, arrays, etc.) duplicated. For example:
.EP
.SI 5
mapping a, b = ({ 1 });
a = b;
a[0] = 2;
printf("%O %O\n", a, b);
results in ({ 2 }) and ({ 2 }), while:
mapping a, b = ({ 1 });
a = copy(b);
a[0] = 2;
printf("%O %O\n", a, b);
results in ({ 2 }) and ({ 1 }).
.EI
