CODEWITHSUNDEEP
erlang
Laxmikant Ratnaparkhi
Laxmikant Ratnaparkhi

Reputation: 5003

case of not returning exact list. erlang

HeirListFormatted = [{code, 1}, ...],
HeirCode = proplists:get_value(code, HeirListFormatted),
HeirList = [<<"1">>, <<"2">>, ...],
HeirListCodes = [case to_integer(X) of HeirCode -> []; _-> form_data:to_integer(X) end || X <- HeirList].

Here HeirListCodes is returning a list like this: [[],2, 3,[],...]. But I want the code in one line and HeirListCodes should return me a list like [2,3, ...].

Upvotes: 1

Views: 66

Answers (1)

Pascal
Pascal

Reputation: 14042

Is it what you are looking for?

[Y || X <- HeirList , Y <- [binary_to_integer(X)],Y =/= HeirCode].

[Edit]

if HeirCode == undefined:

Without any change, the filter condition will be always true, and you will get the list of binaries transformed onto a list of integer.

If you add the filter condition HeirCode =/= undefined this filter will be always false, so the result will be an empty list.

So the solution really depend on the result you expect.

Upvotes: 3

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