Created
June 21, 2016 03:36
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people:count/2 for my blog post
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| -spec count(country(), [group()]) -> non_neg_integer(). | |
| count(Country, Groups) -> | |
| lists:sum( | |
| lists:map( | |
| fun (#{country := Country, members := Members}) -> | |
| length(Members); | |
| (_) -> | |
| 0 | |
| end, Groups)). |
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