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x/ramda/dropWhile.js

:ram: Practical functional Javascript
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import _curry2 from './internal/_curry2';import _dispatchable from './internal/_dispatchable';import _xdropWhile from './internal/_xdropWhile';import slice from './slice';

/** * Returns a new list excluding the leading elements of a given list which * satisfy the supplied predicate function. It passes each value to the supplied * predicate function, skipping elements while the predicate function returns * `true`. The predicate function is applied to one argument: *(value)*. * * Dispatches to the `dropWhile` method of the second argument, if present. * * Acts as a transducer if a transformer is given in list position. * * @func * @memberOf R * @since v0.9.0 * @category List * @sig (a -> Boolean) -> [a] -> [a] * @sig (a -> Boolean) -> String -> String * @param {Function} fn The function called per iteration. * @param {Array} xs The collection to iterate over. * @return {Array} A new array. * @see R.takeWhile, R.transduce, R.addIndex * @example * * const lteTwo = x => x <= 2; * * R.dropWhile(lteTwo, [1, 2, 3, 4, 3, 2, 1]); //=> [3, 4, 3, 2, 1] * * R.dropWhile(x => x !== 'd' , 'Ramda'); //=> 'da' */var dropWhile = _curry2(_dispatchable(['dropWhile'], _xdropWhile, function dropWhile(pred, xs) { var idx = 0; var len = xs.length; while (idx < len && pred(xs[idx])) { idx += 1; } return slice(idx, Infinity, xs);}));export default dropWhile;