arrWithDefault 
Initialize an array with a default value of a specific length.
Parameters
defaultValue::anylength::number || 0
Returns
any[]
Examples
javascript
arrWithDefault('abc', 4); // Returns ['abc', 'abc', 'abc', 'abc']
arrWithDefault(null, 3); // Returns [null, null, null]dart
arrWithDefault('abc', 4); // Returns ['abc', 'abc', 'abc', 'abc']
arrWithDefault(null, 3); // Returns [null, null, null]