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Sort Built-ins
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Sort Built-ins





Sort Built-ins

Sort Built-ins sort lists by passing a function that customizes how the sorting will happen.

Syntax

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<sortedObjects List> := sort(<list List<String>>, <comparator (A,B) -> Number>)

Returns

The sorted list of objects.

Parameters

  • list - The list to be sorted

  • comparator - The function's reference that defines the sorting mechanism

Example

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model Example
...
        comparator := Example::compareTo
        sortedObjects := sort(objects, comparator)
...

func compareTo(left,right)
    aCompare := left.a.compareTo(right.a)
    if (aCompare = 0) then
      return left.b.compareTo(right.b)
    else
      return aCompare
    end
end

The example comparison function above takes two objects. It returns one of:

  • 0 if they are equal.

  • A negative result if the first object should be considered before the second.

  • A positive result otherwise.

Convenience Method for Sorting

A convenience method to sort list by their natural ordering. It sorts lists that contain strings or numbers.

Syntax

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<sortedObjects List> := sort(<list List<String>>)

Returns

The sorted list of objects.

Parameter

  • list - The list to be sorted

Example

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list := ["a","c","b"]
sortedObjects := sort(list)
// sortedObjects = ["a", "b", "c"]