put pair (k,v) into hash.
inherits @safe and @nogc properties from K and V It can resize table if table is overloaded or has too much deleted entries.
Nullable with old value if value was updated, or empty Nullable if we just stored new value.
See Implementation
put pair (k,v) into hash.
inherits @safe and @nogc properties from K and V It can resize table if table is overloaded or has too much deleted entries.