Move _.range to the Utilities category.

This commit is contained in:
John-David Dalton
2014-03-13 00:03:45 -07:00
parent 079b8e7337
commit c770eab3e3

111
lodash.js
View File

@@ -2833,61 +2833,6 @@
return array;
}
/**
* Creates an array of numbers (positive and/or negative) progressing from
* `start` up to but not including `end`. If `start` is less than `stop` a
* zero-length range is created unless a negative `step` is specified.
*
* @static
* @memberOf _
* @category Arrays
* @param {number} [start=0] The start of the range.
* @param {number} end The end of the range.
* @param {number} [step=1] The value to increment or decrement by.
* @returns {Array} Returns the new array of numbers.
* @example
*
* _.range(4);
* // => [0, 1, 2, 3]
*
* _.range(1, 5);
* // => [1, 2, 3, 4]
*
* _.range(0, 20, 5);
* // => [0, 5, 10, 15]
*
* _.range(0, -4, -1);
* // => [0, -1, -2, -3]
*
* _.range(1, 4, 0);
* // => [1, 1, 1]
*
* _.range(0);
* // => []
*/
function range(start, end, step) {
start = +start || 0;
step = step == null ? 1 : (+step || 0);
if (end == null) {
end = start;
start = 0;
} else {
end = +end || 0;
}
// use `Array(length)` so engines like Chakra and V8 avoid slower modes
// http://youtu.be/XAqIpGU8ZZk#t=17m25s
var index = -1,
length = nativeMax(0, ceil((end - start) / (step || 1))),
result = Array(length);
while (++index < length) {
result[index] = start;
start += step;
}
return result;
}
/**
* Removes all elements from an array that the predicate returns truthy for
* and returns an array of removed elements. The predicate is bound to `thisArg`
@@ -8019,6 +7964,62 @@
return baseRandom(min, max);
}
/**
* Creates an array of numbers (positive and/or negative) progressing from
* `start` up to but not including `end`. If `start` is less than `stop` a
* zero-length range is created unless a negative `step` is specified.
*
* @static
* @memberOf _
* @category Utilities
* @param {number} [start=0] The start of the range.
* @param {number} end The end of the range.
* @param {number} [step=1] The value to increment or decrement by.
* @returns {Array} Returns the new array of numbers.
* @example
*
* _.range(4);
* // => [0, 1, 2, 3]
*
* _.range(1, 5);
* // => [1, 2, 3, 4]
*
* _.range(0, 20, 5);
* // => [0, 5, 10, 15]
*
* _.range(0, -4, -1);
* // => [0, -1, -2, -3]
*
* _.range(1, 4, 0);
* // => [1, 1, 1]
*
* _.range(0);
* // => []
*/
function range(start, end, step) {
start = +start || 0;
step = step == null ? 1 : (+step || 0);
if (end == null) {
end = start;
start = 0;
} else {
end = +end || 0;
}
// use `Array(length)` so engines like Chakra and V8 avoid slower modes
// http://youtu.be/XAqIpGU8ZZk#t=17m25s
var index = -1,
length = nativeMax(0, ceil((end - start) / (step || 1))),
result = Array(length);
while (++index < length) {
result[index] = start;
start += step;
}
return result;
}
/**
* Resolves the value of property `key` on `object`. If `key` is a function
* it will be invoked with the `this` binding of `object` and its result