make CampaignCreationSegmentOptions fields omitempty #65
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recipients.segment_opts
in MailChimp API docs is optional, hence I have modified theCampaignCreationSegmentOptions
struct accordingly.I did not like the solution in #53 and #60 which makes
SegmentOptions
a pointer because it is breaking change. However that is the only way to use theomitempty
tag on a struct field.My solution is to instead place
omitempty
on all the fields within the struct. When theCampaignCreationRecipients
is JSON marshalled andSegmentOptions
is not provided, it will generate"segment_opts": {}
which behaves the same at it being omitted in the MailChimp API. This solution also does not break existing usage.