group items in collection by block result and return as dictionary

Parameters

gather collection :integer :string :literal :dictionary :object :inline :block :range
       params :null :literal :block
       condition :block :bytecode

Attributes

Returns

Examples

copy
print gather [1 2 3 4 5 6] 'x [
    x % 2
]
; [1:[1 3 5] 0:[2 4 6]]

print gather ["New York" "Washington" "Minnesota" "Montana" "New Hampshire" "New Mexico"] 'x [
    size x
]
; [8:[New York] 10:[Washington New Mexico] 9:[Minnesota] 7:[Montana] 13:[New Hampshire]]

copy
gather.with:'i ["one" "two" "three" "four"] 'x -> i%2
; [0:[one three] 1:[two four]]

Related