Function many

Make a decoder that can be used for decoding arrays, where every value is run through the given child decoder.

Example

Suppose we have a decoder for Users

class User {}

const user_decoder = Decode.instance(User, {
    id: Decode.field('id', Decode.integer),
    name: Decode.field('name', Decode.string),
});
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Using Decode.many we can easily build a decoder for a list of users:

const decoder = Decode.many(user_decoder);

decode(decoder, [ {id: 1, name: 'Jeff'}, {id: 2, name: 'Jake'} ]);
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