V: consider having 'map = { }' to clear a map

[SleepyRoy]

We have a = [ ] to clear an array. It's very natural to also have a = { } to clear a map.

fn main() {
    mut a := {'one':1}
    a = {}
}

Now the above code, for example, gives V error - type map_string_int is private.

[Gladear]

Be careful, a = [] doesn't clear the array, it creates a new one (and therefore requires a new memory allocation). a.clear() really removes the items from the array.

This isn't really a feature request, and more a bug report, it should already work.