Method `[]=()
- Method `[]=
mixed `[]=(object arg, mixed index, mixed val)
mixed `[]=(object arg, string index, mixed val)
mixed `[]=(array arg, int index, mixed val)
mixed `[]=(mapping arg, mixed index, mixed val)
bool `[]=(multiset arg, mixed index, bool val)- Description
Index assignment.
Every lvalue expression with the
[]
operator becomes a call to this function, i.e.a[b]=c
is the same aspredef::`[]=(a,b,c)
.If arg is an object that implements lfun::`[]=(), that function will be called with index and val as the arguments.
arg can have any of the following types:object The non-protected (ie public) variable named index will be looked up in arg, and assigned val.
array|mapping Index index in arg will be assigned val.
multiset If val is
0
(zero), one occurrance of index in arg will be removed. Otherwise index will be added to arg if it is not already there.
- Returns
val will be returned.
- Note
An indexing expression in a non-lvalue context, i.e. where the index is being queried instead of assigned, uses `[] instead of this function.
- See also