1
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var baseRange = require('./_baseRange'),
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2
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isIterateeCall = require('./_isIterateeCall'),
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3
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toFinite = require('./toFinite');
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4
|
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5
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/**
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6
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* Creates a `_.range` or `_.rangeRight` function.
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7
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*
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8
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* @private
|
9
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* @param {boolean} [fromRight] Specify iterating from right to left.
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10
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* @returns {Function} Returns the new range function.
|
11
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*/
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12
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function createRange(fromRight) {
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13
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return function(start, end, step) {
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14
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if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
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15
|
end = step = undefined;
|
16
|
}
|
17
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// Ensure the sign of `-0` is preserved.
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18
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start = toFinite(start);
|
19
|
if (end === undefined) {
|
20
|
end = start;
|
21
|
start = 0;
|
22
|
} else {
|
23
|
end = toFinite(end);
|
24
|
}
|
25
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step = step === undefined ? (start < end ? 1 : -1) : toFinite(step);
|
26
|
return baseRange(start, end, step, fromRight);
|
27
|
};
|
28
|
}
|
29
|
|
30
|
module.exports = createRange;
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