[DGD]removing elements from mappings

[Boris J]

Hello !

I wondering what is the proper way of removing elements (indices/values) from 
a mapping in DGD ?

Shouldn't this work:

    foo_mapping -= bar_indices;

which would remove 'bar_indices' indice and it's value from the 'foo_mapping' 
mapping ?

I discovered also that setting value of an indice to 'nil', e.g.

    foo_mapping[bar_indices] = nil;

makes the 'bar_indices' entry to disappear from the mapping. Does this mean 
that it's impossible to store nil values in DGD mappings, or is it a 
configurable option ? ( Like changing 'typechecking' in driver config file or 
something... )

t.i.a. 
Boris J

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