`%()

`>()

Method `&()

Method `&

mixed `&(mixed arg1)
mixed `&(object arg1, mixed arg2)
mixed `&(mixed arg1, object arg2)
int `&(int arg1, int arg2)
array `&(array arg1, array arg2)
multiset `&(multiset arg1, multiset arg2)
mapping `&(mapping arg1, mapping arg2)
string `&(string arg1, string arg2)
type `&(type|program arg1, type|program arg2)
mapping `&(mapping arg1, array arg2)
mapping `&(array arg1, mapping arg2)
mapping `&(mapping arg1, multiset arg2)
mapping `&(multiset arg1, mapping arg2)
mixed `&(mixed arg1, mixed arg2, mixed ... extras)

Description

Bitwise and/intersection operator.

Returns

If there's a single argument, that argument will be returned.

If there are more than two arguments, the result will be:

`&(`&(arg1, arg2), @extras)

.

If arg1 is an object that has an lfun::`&(), that function will be called with arg2 as the single argument.

If arg2 is an object that has an lfun::``&(), that function will be called with arg1 as the single argument.

Otherwise the result will be as follows:

arg1 can have any of the following types:

int The result will be the bitwise and of arg1 and arg2. array|multiset|mapping The result will be the elements of arg1 and arg2 that occurr in both. type|program The result will be the type intersection of arg1 and arg2. string The result will be the string where the elements of arg1 and arg2 have been pairwise bitwise anded.

See also

`|, lfun::`&(), lfun::``&()