History of Idiom 28 > diff from v58 to v59
Edit summary for version 59 :
[Erlang] Removed demo (not a demo)
[Erlang] Removed demo (not a demo)
↷
Version 58
2020-04-29, 10:43:32
Version 59
2020-05-21, 20:22:59
Idiom #28 Sort by a property
Sort elements of array-like collection items in ascending order of x.p, where p is a field of the type Item of the objects in items.
Idiom #28 Sort by a property
Sort elements of array-like collection items in ascending order of x.p, where p is a field of the type Item of the objects in items.
Variables
items,x,pImports
Imports
Code
sort_by_birth(ListOfMaps) -> lists:sort( fun(A, B) -> maps:get(birth, A, undefined) =< maps:get(birth, B, undefined) end, ListOfMaps). sort_by_birth(ListOfRecords) -> lists:keysort(#item.birth, ListOfRecords).
Code
sort_by_birth(ListOfMaps) -> lists:sort( fun(A, B) -> maps:get(birth, A, undefined) =< maps:get(birth, B, undefined) end, ListOfMaps). sort_by_birth(ListOfRecords) -> lists:keysort(#item.birth, ListOfRecords).
Comments bubble
Comments bubble
First function works with a list of maps, like [#{birth => "1982-01-03"}, …].
Second function works with a list of records, like [#item{birth = "1982-01-03", …}, …]
Second function works with a list of records, like [#item{birth = "1982-01-03", …}, …]
Second function works with a list of records, like [#item{birth = "1982-01-03", …}, …]