100       var length = arguments.length;
101       if (length < 2 || obj == null) return obj;
102       for (var index = 1; index < length; index++) {
105             l = keys.length;
138     var length = getLength(collection);
139     return typeof length == 'number' && length >= 0 && length <= MAX_ARRAY_INDEX;
150     var i, length;  variable
152       for (i = 0, length = obj.length; i < length; i++) {
157       for (i = 0, length = keys.length; i < length; i++) {
168         length = (keys || obj).length,  variable
169         results = Array(length);
170     for (var index = 0; index < length; index++) {
181     function iterator(obj, iteratee, memo, keys, index, length) {  argument
182       for (; index >= 0 && index < length; index += dir) {
192           length = (keys || obj).length,
193           index = dir > 0 ? 0 : length - 1;
195       if (arguments.length < 3) {
199       return iterator(obj, iteratee, memo, keys, index, length);
242         length = (keys || obj).length;  variable
243     for (var index = 0; index < length; index++) {
255         length = (keys || obj).length;  variable
256     for (var index = 0; index < length; index++) {
304       for (var i = 0, length = obj.length; i < length; i++) {
329       for (var i = 0, length = obj.length; i < length; i++) {
352     var length = set.length;
353     var shuffled = Array(length);
354     for (var index = 0, rand; index < length; index++) {
368       return obj[_.random(obj.length - 1)];
436     return isArrayLike(obj) ? obj.length : _.keys(obj).length;
459     return _.initial(array, array.length - n);
466     return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));
473     if (n == null || guard) return array[array.length - 1];
474     return _.rest(array, Math.max(0, array.length - n));
492     for (var i = startIndex || 0, length = getLength(input); i < length; i++) {
497         var j = 0, len = value.length;
498         output.length += len;
531     for (var i = 0, length = getLength(array); i < length; i++) {
559     var argsLength = arguments.length;
560     for (var i = 0, length = getLength(array); i < length; i++) {
589     var length = array && _.max(array, getLength).length || 0;
590     var result = Array(length);
592     for (var index = 0; index < length; index++) {
603     for (var i = 0, length = getLength(list); i < length; i++) {
617       var length = getLength(array);
618       var index = dir > 0 ? 0 : length - 1;
619       for (; index >= 0 && index < length; index += dir) {
646       var i = 0, length = getLength(array);
649             i = idx >= 0 ? idx : Math.max(idx + length, i);
651             length = idx >= 0 ? Math.min(idx + 1, length) : idx + length + 1;
653       } else if (sortedIndex && idx && length) {
658         idx = predicateFind(slice.call(array, i, length), _.isNaN);
661       for (idx = dir > 0 ? i : length - 1; idx >= 0 && idx < length; idx += dir) {
685     var length = Math.max(Math.ceil((stop - start) / step), 0);
686     var range = Array(length);
688     for (var idx = 0; idx < length; idx++, start += step) {
727       var position = 0, length = boundArgs.length;
728       var args = Array(length);
729       for (var i = 0; i < length; i++) {
732       while (position < arguments.length) args.push(arguments[position++]);
742     var i, length = arguments.length, key;
743     if (length <= 1) throw new Error('bindAll must be passed function names');
744     for (i = 1; i < length; i++) {
867     var start = args.length - 1;
910     var nonEnumIdx = nonEnumerableProps.length;
951     var length = keys.length;
952     var values = Array(length);
953     for (var i = 0; i < length; i++) {
964           length = keys.length,
967       for (var index = 0; index < length; index++) {
977     var length = keys.length;
978     var pairs = Array(length);
979     for (var i = 0; i < length; i++) {
989     for (var i = 0, length = keys.length; i < length; i++) {
1016     for (var i = 0, length = keys.length; i < length; i++) {
1034     for (var i = 0, length = keys.length; i < length; i++) {
1083     var keys = _.keys(attrs), length = keys.length;
1084     if (object == null) return !length;
1086     for (var i = 0; i < length; i++) {
1149     var length = aStack.length;
1150     while (length--) {
1153       if (aStack[length] === a) return bStack[length] === b;
1163       length = a.length;
1164       if (length !== b.length) return false;
1166       while (length--) {
1167         if (!eq(a[length], b[length], aStack, bStack)) return false;
1172       length = keys.length;
1174       if (_.keys(b).length !== length) return false;
1175       while (length--) {
1177         key = keys[length];
1196 …rayLike(obj) && (_.isArray(obj) || _.isString(obj) || _.isArguments(obj))) return obj.length === 0;
1197     return _.keys(obj).length === 0;
1431       index = offset + match.length;
1510       if ((name === 'shift' || name === 'splice') && obj.length === 0) delete obj[0];