arrCompact

Returns a new array with every falsy value removed.

Dart and Python have no truthiness of their own, so the rejected set is fixed rather than left to each language: nullNone, falseFalse, 0 (including -0 and 0.0), the empty string '' and NaN. Everything else is kept — an empty array, an empty object and a string of spaces are all preserved.

If the argument is not an array, an empty array is returned.

undefined is rejected as well.

Parameters

Name	Type	Required	Default
array	any[]List<dynamic>list[Any]	●	–
The array to compact. The original array is not modified.

Returns

any[]

List<dynamic>

list[Any]

Examples

arrCompact([0, 1, false, 2, '', 3, null, undefined, NaN]); // Returns [1, 2, 3]
arrCompact([false, 0, '', null]); // Returns []
arrCompact([[], {}, ' ', '0']); // Returns [[], {}, ' ', '0']
arrCompact([true, -1, 0.5]); // Returns [true, -1, 0.5]

arrCompact([0, 1, false, 2, '', 3, null, double.nan]); // Returns [1, 2, 3]
arrCompact([false, 0, '', null]); // Returns []
arrCompact([[], {}, ' ', '0']); // Returns [[], {}, ' ', '0']
arrCompact([true, -1, 0.5]); // Returns [true, -1, 0.5]

arrCompact([0, 1, False, 2, '', 3, None, float('nan')])  # Returns [1, 2, 3]
arrCompact([False, 0, '', None])  # Returns []
arrCompact([[], {}, ' ', '0'])  # Returns [[], {}, ' ', '0']
arrCompact([True, -1, 0.5])  # Returns [True, -1, 0.5]