takeWhile
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2023-12-01
Creates a new sequence comprising the elements from the head of this sequence that satisfy some predicate. Once an element is encountered that doesn't satisfy the predicate, iteration will stop.
Signature
Sequence.takeWhile = function(predicate) { /*...*/ }Sequence.takeWhile = function takeWhile(predicate) {
return new TakeWhileSequence(this, predicate);
}| Name | Type(s) | Description |
|---|---|---|
| predicate | Function | |
| returns | Sequence | The new sequence |
Examples
function lessThan(x) {
return function(y) {
return y < x;
};
}
Lazy([1, 2, 3, 4]).takeWhile(lessThan(3)) // sequence: [1, 2]
Lazy([1, 2, 3, 4]).takeWhile(lessThan(0)) // sequence: []