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- (function() {
-
-
-
- var root = this;
-
- var previousUnderscore = root._;
-
- var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype;
-
- var
- push = ArrayProto.push,
- slice = ArrayProto.slice,
- concat = ArrayProto.concat,
- toString = ObjProto.toString,
- hasOwnProperty = ObjProto.hasOwnProperty;
-
-
- var
- nativeIsArray = Array.isArray,
- nativeKeys = Object.keys,
- nativeBind = FuncProto.bind;
-
- var _ = function(obj) {
- if (obj instanceof _) return obj;
- if (!(this instanceof _)) return new _(obj);
- this._wrapped = obj;
- };
-
-
-
- if (typeof exports !== 'undefined') {
- if (typeof module !== 'undefined' && module.exports) {
- exports = module.exports = _;
- }
- exports._ = _;
- } else {
- root._ = _;
- }
-
- _.VERSION = '1.7.0';
-
-
-
- var createCallback = function(func, context, argCount) {
- if (context === void 0) return func;
- switch (argCount == null ? 3 : argCount) {
- case 1: return function(value) {
- return func.call(context, value);
- };
- case 2: return function(value, other) {
- return func.call(context, value, other);
- };
- case 3: return function(value, index, collection) {
- return func.call(context, value, index, collection);
- };
- case 4: return function(accumulator, value, index, collection) {
- return func.call(context, accumulator, value, index, collection);
- };
- }
- return function() {
- return func.apply(context, arguments);
- };
- };
-
-
-
- _.iteratee = function(value, context, argCount) {
- if (value == null) return _.identity;
- if (_.isFunction(value)) return createCallback(value, context, argCount);
- if (_.isObject(value)) return _.matches(value);
- return _.property(value);
- };
-
-
-
-
-
- _.each = _.forEach = function(obj, iteratee, context) {
- if (obj == null) return obj;
- iteratee = createCallback(iteratee, context);
- var i, length = obj.length;
- if (length === +length) {
- for (i = 0; i < length; i++) {
- iteratee(obj[i], i, obj);
- }
- } else {
- var keys = _.keys(obj);
- for (i = 0, length = keys.length; i < length; i++) {
- iteratee(obj[keys[i]], keys[i], obj);
- }
- }
- return obj;
- };
-
- _.map = _.collect = function(obj, iteratee, context) {
- if (obj == null) return [];
- iteratee = _.iteratee(iteratee, context);
- var keys = obj.length !== +obj.length && _.keys(obj),
- length = (keys || obj).length,
- results = Array(length),
- currentKey;
- for (var index = 0; index < length; index++) {
- currentKey = keys ? keys[index] : index;
- results[index] = iteratee(obj[currentKey], currentKey, obj);
- }
- return results;
- };
- var reduceError = 'Reduce of empty array with no initial value';
-
-
- _.reduce = _.foldl = _.inject = function(obj, iteratee, memo, context) {
- if (obj == null) obj = [];
- iteratee = createCallback(iteratee, context, 4);
- var keys = obj.length !== +obj.length && _.keys(obj),
- length = (keys || obj).length,
- index = 0, currentKey;
- if (arguments.length < 3) {
- if (!length) throw new TypeError(reduceError);
- memo = obj[keys ? keys[index++] : index++];
- }
- for (; index < length; index++) {
- currentKey = keys ? keys[index] : index;
- memo = iteratee(memo, obj[currentKey], currentKey, obj);
- }
- return memo;
- };
-
- _.reduceRight = _.foldr = function(obj, iteratee, memo, context) {
- if (obj == null) obj = [];
- iteratee = createCallback(iteratee, context, 4);
- var keys = obj.length !== + obj.length && _.keys(obj),
- index = (keys || obj).length,
- currentKey;
- if (arguments.length < 3) {
- if (!index) throw new TypeError(reduceError);
- memo = obj[keys ? keys[--index] : --index];
- }
- while (index--) {
- currentKey = keys ? keys[index] : index;
- memo = iteratee(memo, obj[currentKey], currentKey, obj);
- }
- return memo;
- };
-
- _.find = _.detect = function(obj, predicate, context) {
- var result;
- predicate = _.iteratee(predicate, context);
- _.some(obj, function(value, index, list) {
- if (predicate(value, index, list)) {
- result = value;
- return true;
- }
- });
- return result;
- };
-
-
- _.filter = _.select = function(obj, predicate, context) {
- var results = [];
- if (obj == null) return results;
- predicate = _.iteratee(predicate, context);
- _.each(obj, function(value, index, list) {
- if (predicate(value, index, list)) results.push(value);
- });
- return results;
- };
-
- _.reject = function(obj, predicate, context) {
- return _.filter(obj, _.negate(_.iteratee(predicate)), context);
- };
-
-
- _.every = _.all = function(obj, predicate, context) {
- if (obj == null) return true;
- predicate = _.iteratee(predicate, context);
- var keys = obj.length !== +obj.length && _.keys(obj),
- length = (keys || obj).length,
- index, currentKey;
- for (index = 0; index < length; index++) {
- currentKey = keys ? keys[index] : index;
- if (!predicate(obj[currentKey], currentKey, obj)) return false;
- }
- return true;
- };
-
-
- _.some = _.any = function(obj, predicate, context) {
- if (obj == null) return false;
- predicate = _.iteratee(predicate, context);
- var keys = obj.length !== +obj.length && _.keys(obj),
- length = (keys || obj).length,
- index, currentKey;
- for (index = 0; index < length; index++) {
- currentKey = keys ? keys[index] : index;
- if (predicate(obj[currentKey], currentKey, obj)) return true;
- }
- return false;
- };
-
-
- _.contains = _.include = function(obj, target) {
- if (obj == null) return false;
- if (obj.length !== +obj.length) obj = _.values(obj);
- return _.indexOf(obj, target) >= 0;
- };
-
- _.invoke = function(obj, method) {
- var args = slice.call(arguments, 2);
- var isFunc = _.isFunction(method);
- return _.map(obj, function(value) {
- return (isFunc ? method : value[method]).apply(value, args);
- });
- };
-
- _.pluck = function(obj, key) {
- return _.map(obj, _.property(key));
- };
-
-
- _.where = function(obj, attrs) {
- return _.filter(obj, _.matches(attrs));
- };
-
-
- _.findWhere = function(obj, attrs) {
- return _.find(obj, _.matches(attrs));
- };
-
- _.max = function(obj, iteratee, context) {
- var result = -Infinity, lastComputed = -Infinity,
- value, computed;
- if (iteratee == null && obj != null) {
- obj = obj.length === +obj.length ? obj : _.values(obj);
- for (var i = 0, length = obj.length; i < length; i++) {
- value = obj[i];
- if (value > result) {
- result = value;
- }
- }
- } else {
- iteratee = _.iteratee(iteratee, context);
- _.each(obj, function(value, index, list) {
- computed = iteratee(value, index, list);
- if (computed > lastComputed || computed === -Infinity && result === -Infinity) {
- result = value;
- lastComputed = computed;
- }
- });
- }
- return result;
- };
-
- _.min = function(obj, iteratee, context) {
- var result = Infinity, lastComputed = Infinity,
- value, computed;
- if (iteratee == null && obj != null) {
- obj = obj.length === +obj.length ? obj : _.values(obj);
- for (var i = 0, length = obj.length; i < length; i++) {
- value = obj[i];
- if (value < result) {
- result = value;
- }
- }
- } else {
- iteratee = _.iteratee(iteratee, context);
- _.each(obj, function(value, index, list) {
- computed = iteratee(value, index, list);
- if (computed < lastComputed || computed === Infinity && result === Infinity) {
- result = value;
- lastComputed = computed;
- }
- });
- }
- return result;
- };
-
-
- _.shuffle = function(obj) {
- var set = obj && obj.length === +obj.length ? obj : _.values(obj);
- var length = set.length;
- var shuffled = Array(length);
- for (var index = 0, rand; index < length; index++) {
- rand = _.random(0, index);
- if (rand !== index) shuffled[index] = shuffled[rand];
- shuffled[rand] = set[index];
- }
- return shuffled;
- };
- // Sample **n** random values from a collection.
- // If **n** is not specified, returns a single random element.
- // The internal `guard` argument allows it to work with `map`.
- _.sample = function(obj, n, guard) {
- if (n == null || guard) {
- if (obj.length !== +obj.length) obj = _.values(obj);
- return obj[_.random(obj.length - 1)];
- }
- return _.shuffle(obj).slice(0, Math.max(0, n));
- };
-
- _.sortBy = function(obj, iteratee, context) {
- iteratee = _.iteratee(iteratee, context);
- return _.pluck(_.map(obj, function(value, index, list) {
- return {
- value: value,
- index: index,
- criteria: iteratee(value, index, list)
- };
- }).sort(function(left, right) {
- var a = left.criteria;
- var b = right.criteria;
- if (a !== b) {
- if (a > b || a === void 0) return 1;
- if (a < b || b === void 0) return -1;
- }
- return left.index - right.index;
- }), 'value');
- };
-
- var group = function(behavior) {
- return function(obj, iteratee, context) {
- var result = {};
- iteratee = _.iteratee(iteratee, context);
- _.each(obj, function(value, index) {
- var key = iteratee(value, index, obj);
- behavior(result, value, key);
- });
- return result;
- };
- };
-
-
- _.groupBy = group(function(result, value, key) {
- if (_.has(result, key)) result[key].push(value); else result[key] = [value];
- });
-
-
- _.indexBy = group(function(result, value, key) {
- result[key] = value;
- });
-
-
-
- _.countBy = group(function(result, value, key) {
- if (_.has(result, key)) result[key]++; else result[key] = 1;
- });
-
-
- _.sortedIndex = function(array, obj, iteratee, context) {
- iteratee = _.iteratee(iteratee, context, 1);
- var value = iteratee(obj);
- var low = 0, high = array.length;
- while (low < high) {
- var mid = low + high >>> 1;
- if (iteratee(array[mid]) < value) low = mid + 1; else high = mid;
- }
- return low;
- };
-
- _.toArray = function(obj) {
- if (!obj) return [];
- if (_.isArray(obj)) return slice.call(obj);
- if (obj.length === +obj.length) return _.map(obj, _.identity);
- return _.values(obj);
- };
-
- _.size = function(obj) {
- if (obj == null) return 0;
- return obj.length === +obj.length ? obj.length : _.keys(obj).length;
- };
-
-
- _.partition = function(obj, predicate, context) {
- predicate = _.iteratee(predicate, context);
- var pass = [], fail = [];
- _.each(obj, function(value, key, obj) {
- (predicate(value, key, obj) ? pass : fail).push(value);
- });
- return [pass, fail];
- };
-
-
-
-
-
- _.first = _.head = _.take = function(array, n, guard) {
- if (array == null) return void 0;
- if (n == null || guard) return array[0];
- if (n < 0) return [];
- return slice.call(array, 0, n);
- };
-
-
-
-
- _.initial = function(array, n, guard) {
- return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));
- };
-
-
- _.last = function(array, n, guard) {
- if (array == null) return void 0;
- if (n == null || guard) return array[array.length - 1];
- return slice.call(array, Math.max(array.length - n, 0));
- };
-
-
-
-
- _.rest = _.tail = _.drop = function(array, n, guard) {
- return slice.call(array, n == null || guard ? 1 : n);
- };
-
- _.compact = function(array) {
- return _.filter(array, _.identity);
- };
-
- var flatten = function(input, shallow, strict, output) {
- if (shallow && _.every(input, _.isArray)) {
- return concat.apply(output, input);
- }
- for (var i = 0, length = input.length; i < length; i++) {
- var value = input[i];
- if (!_.isArray(value) && !_.isArguments(value)) {
- if (!strict) output.push(value);
- } else if (shallow) {
- push.apply(output, value);
- } else {
- flatten(value, shallow, strict, output);
- }
- }
- return output;
- };
-
- _.flatten = function(array, shallow) {
- return flatten(array, shallow, false, []);
- };
-
- _.without = function(array) {
- return _.difference(array, slice.call(arguments, 1));
- };
-
-
-
- _.uniq = _.unique = function(array, isSorted, iteratee, context) {
- if (array == null) return [];
- if (!_.isBoolean(isSorted)) {
- context = iteratee;
- iteratee = isSorted;
- isSorted = false;
- }
- if (iteratee != null) iteratee = _.iteratee(iteratee, context);
- var result = [];
- var seen = [];
- for (var i = 0, length = array.length; i < length; i++) {
- var value = array[i];
- if (isSorted) {
- if (!i || seen !== value) result.push(value);
- seen = value;
- } else if (iteratee) {
- var computed = iteratee(value, i, array);
- if (_.indexOf(seen, computed) < 0) {
- seen.push(computed);
- result.push(value);
- }
- } else if (_.indexOf(result, value) < 0) {
- result.push(value);
- }
- }
- return result;
- };
-
-
- _.union = function() {
- return _.uniq(flatten(arguments, true, true, []));
- };
-
-
- _.intersection = function(array) {
- if (array == null) return [];
- var result = [];
- var argsLength = arguments.length;
- for (var i = 0, length = array.length; i < length; i++) {
- var item = array[i];
- if (_.contains(result, item)) continue;
- for (var j = 1; j < argsLength; j++) {
- if (!_.contains(arguments[j], item)) break;
- }
- if (j === argsLength) result.push(item);
- }
- return result;
- };
-
-
- _.difference = function(array) {
- var rest = flatten(slice.call(arguments, 1), true, true, []);
- return _.filter(array, function(value){
- return !_.contains(rest, value);
- });
- };
-
-
- _.zip = function(array) {
- if (array == null) return [];
- var length = _.max(arguments, 'length').length;
- var results = Array(length);
- for (var i = 0; i < length; i++) {
- results[i] = _.pluck(arguments, i);
- }
- return results;
- };
-
-
-
- _.object = function(list, values) {
- if (list == null) return {};
- var result = {};
- for (var i = 0, length = list.length; i < length; i++) {
- if (values) {
- result[list[i]] = values[i];
- } else {
- result[list[i][0]] = list[i][1];
- }
- }
- return result;
- };
-
-
-
-
- _.indexOf = function(array, item, isSorted) {
- if (array == null) return -1;
- var i = 0, length = array.length;
- if (isSorted) {
- if (typeof isSorted == 'number') {
- i = isSorted < 0 ? Math.max(0, length + isSorted) : isSorted;
- } else {
- i = _.sortedIndex(array, item);
- return array[i] === item ? i : -1;
- }
- }
- for (; i < length; i++) if (array[i] === item) return i;
- return -1;
- };
- _.lastIndexOf = function(array, item, from) {
- if (array == null) return -1;
- var idx = array.length;
- if (typeof from == 'number') {
- idx = from < 0 ? idx + from + 1 : Math.min(idx, from + 1);
- }
- while (--idx >= 0) if (array[idx] === item) return idx;
- return -1;
- };
-
-
-
- _.range = function(start, stop, step) {
- if (arguments.length <= 1) {
- stop = start || 0;
- start = 0;
- }
- step = step || 1;
- var length = Math.max(Math.ceil((stop - start) / step), 0);
- var range = Array(length);
- for (var idx = 0; idx < length; idx++, start += step) {
- range[idx] = start;
- }
- return range;
- };
-
-
-
- var Ctor = function(){};
-
-
-
- _.bind = function(func, context) {
- var args, bound;
- if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
- if (!_.isFunction(func)) throw new TypeError('Bind must be called on a function');
- args = slice.call(arguments, 2);
- bound = function() {
- if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
- Ctor.prototype = func.prototype;
- var self = new Ctor;
- Ctor.prototype = null;
- var result = func.apply(self, args.concat(slice.call(arguments)));
- if (_.isObject(result)) return result;
- return self;
- };
- return bound;
- };
-
-
-
- _.partial = function(func) {
- var boundArgs = slice.call(arguments, 1);
- return function() {
- var position = 0;
- var args = boundArgs.slice();
- for (var i = 0, length = args.length; i < length; i++) {
- if (args[i] === _) args[i] = arguments[position++];
- }
- while (position < arguments.length) args.push(arguments[position++]);
- return func.apply(this, args);
- };
- };
-
-
-
- _.bindAll = function(obj) {
- var i, length = arguments.length, key;
- if (length <= 1) throw new Error('bindAll must be passed function names');
- for (i = 1; i < length; i++) {
- key = arguments[i];
- obj[key] = _.bind(obj[key], obj);
- }
- return obj;
- };
-
- _.memoize = function(func, hasher) {
- var memoize = function(key) {
- var cache = memoize.cache;
- var address = hasher ? hasher.apply(this, arguments) : key;
- if (!_.has(cache, address)) cache[address] = func.apply(this, arguments);
- return cache[address];
- };
- memoize.cache = {};
- return memoize;
- };
-
-
- _.delay = function(func, wait) {
- var args = slice.call(arguments, 2);
- return setTimeout(function(){
- return func.apply(null, args);
- }, wait);
- };
-
-
- _.defer = function(func) {
- return _.delay.apply(_, [func, 1].concat(slice.call(arguments, 1)));
- };
-
-
-
-
-
- _.throttle = function(func, wait, options) {
- var context, args, result;
- var timeout = null;
- var previous = 0;
- if (!options) options = {};
- var later = function() {
- previous = options.leading === false ? 0 : _.now();
- timeout = null;
- result = func.apply(context, args);
- if (!timeout) context = args = null;
- };
- return function() {
- var now = _.now();
- if (!previous && options.leading === false) previous = now;
- var remaining = wait - (now - previous);
- context = this;
- args = arguments;
- if (remaining <= 0 || remaining > wait) {
- clearTimeout(timeout);
- timeout = null;
- previous = now;
- result = func.apply(context, args);
- if (!timeout) context = args = null;
- } else if (!timeout && options.trailing !== false) {
- timeout = setTimeout(later, remaining);
- }
- return result;
- };
- };
-
-
-
-
- _.debounce = function(func, wait, immediate) {
- var timeout, args, context, timestamp, result;
- var later = function() {
- var last = _.now() - timestamp;
- if (last < wait && last > 0) {
- timeout = setTimeout(later, wait - last);
- } else {
- timeout = null;
- if (!immediate) {
- result = func.apply(context, args);
- if (!timeout) context = args = null;
- }
- }
- };
- return function() {
- context = this;
- args = arguments;
- timestamp = _.now();
- var callNow = immediate && !timeout;
- if (!timeout) timeout = setTimeout(later, wait);
- if (callNow) {
- result = func.apply(context, args);
- context = args = null;
- }
- return result;
- };
- };
-
-
-
- _.wrap = function(func, wrapper) {
- return _.partial(wrapper, func);
- };
-
- _.negate = function(predicate) {
- return function() {
- return !predicate.apply(this, arguments);
- };
- };
-
-
- _.compose = function() {
- var args = arguments;
- var start = args.length - 1;
- return function() {
- var i = start;
- var result = args[start].apply(this, arguments);
- while (i--) result = args[i].call(this, result);
- return result;
- };
- };
-
- _.after = function(times, func) {
- return function() {
- if (--times < 1) {
- return func.apply(this, arguments);
- }
- };
- };
-
- _.before = function(times, func) {
- var memo;
- return function() {
- if (--times > 0) {
- memo = func.apply(this, arguments);
- } else {
- func = null;
- }
- return memo;
- };
- };
-
-
- _.once = _.partial(_.before, 2);
-
-
-
-
- _.keys = function(obj) {
- if (!_.isObject(obj)) return [];
- if (nativeKeys) return nativeKeys(obj);
- var keys = [];
- for (var key in obj) if (_.has(obj, key)) keys.push(key);
- return keys;
- };
-
- _.values = function(obj) {
- var keys = _.keys(obj);
- var length = keys.length;
- var values = Array(length);
- for (var i = 0; i < length; i++) {
- values[i] = obj[keys[i]];
- }
- return values;
- };
-
- _.pairs = function(obj) {
- var keys = _.keys(obj);
- var length = keys.length;
- var pairs = Array(length);
- for (var i = 0; i < length; i++) {
- pairs[i] = [keys[i], obj[keys[i]]];
- }
- return pairs;
- };
-
- _.invert = function(obj) {
- var result = {};
- var keys = _.keys(obj);
- for (var i = 0, length = keys.length; i < length; i++) {
- result[obj[keys[i]]] = keys[i];
- }
- return result;
- };
-
-
- _.functions = _.methods = function(obj) {
- var names = [];
- for (var key in obj) {
- if (_.isFunction(obj[key])) names.push(key);
- }
- return names.sort();
- };
-
- _.extend = function(obj) {
- if (!_.isObject(obj)) return obj;
- var source, prop;
- for (var i = 1, length = arguments.length; i < length; i++) {
- source = arguments[i];
- for (prop in source) {
- if (hasOwnProperty.call(source, prop)) {
- obj[prop] = source[prop];
- }
- }
- }
- return obj;
- };
-
- _.pick = function(obj, iteratee, context) {
- var result = {}, key;
- if (obj == null) return result;
- if (_.isFunction(iteratee)) {
- iteratee = createCallback(iteratee, context);
- for (key in obj) {
- var value = obj[key];
- if (iteratee(value, key, obj)) result[key] = value;
- }
- } else {
- var keys = concat.apply([], slice.call(arguments, 1));
- obj = new Object(obj);
- for (var i = 0, length = keys.length; i < length; i++) {
- key = keys[i];
- if (key in obj) result[key] = obj[key];
- }
- }
- return result;
- };
-
- _.omit = function(obj, iteratee, context) {
- if (_.isFunction(iteratee)) {
- iteratee = _.negate(iteratee);
- } else {
- var keys = _.map(concat.apply([], slice.call(arguments, 1)), String);
- iteratee = function(value, key) {
- return !_.contains(keys, key);
- };
- }
- return _.pick(obj, iteratee, context);
- };
-
- _.defaults = function(obj) {
- if (!_.isObject(obj)) return obj;
- for (var i = 1, length = arguments.length; i < length; i++) {
- var source = arguments[i];
- for (var prop in source) {
- if (obj[prop] === void 0) obj[prop] = source[prop];
- }
- }
- return obj;
- };
-
- _.clone = function(obj) {
- if (!_.isObject(obj)) return obj;
- return _.isArray(obj) ? obj.slice() : _.extend({}, obj);
- };
-
-
-
- _.tap = function(obj, interceptor) {
- interceptor(obj);
- return obj;
- };
-
- var eq = function(a, b, aStack, bStack) {
-
-
- if (a === b) return a !== 0 || 1 / a === 1 / b;
-
- if (a == null || b == null) return a === b;
-
- if (a instanceof _) a = a._wrapped;
- if (b instanceof _) b = b._wrapped;
-
- var className = toString.call(a);
- if (className !== toString.call(b)) return false;
- switch (className) {
-
- case '[object RegExp]':
-
- case '[object String]':
-
-
- return '' + a === '' + b;
- case '[object Number]':
-
-
- if (+a !== +a) return +b !== +b;
-
- return +a === 0 ? 1 / +a === 1 / b : +a === +b;
- case '[object Date]':
- case '[object Boolean]':
-
-
-
- return +a === +b;
- }
- if (typeof a != 'object' || typeof b != 'object') return false;
-
-
- var length = aStack.length;
- while (length--) {
-
-
- if (aStack[length] === a) return bStack[length] === b;
- }
-
-
- var aCtor = a.constructor, bCtor = b.constructor;
- if (
- aCtor !== bCtor &&
-
- 'constructor' in a && 'constructor' in b &&
- !(_.isFunction(aCtor) && aCtor instanceof aCtor &&
- _.isFunction(bCtor) && bCtor instanceof bCtor)
- ) {
- return false;
- }
-
- aStack.push(a);
- bStack.push(b);
- var size, result;
-
- if (className === '[object Array]') {
-
- size = a.length;
- result = size === b.length;
- if (result) {
-
- while (size--) {
- if (!(result = eq(a[size], b[size], aStack, bStack))) break;
- }
- }
- } else {
-
- var keys = _.keys(a), key;
- size = keys.length;
-
- result = _.keys(b).length === size;
- if (result) {
- while (size--) {
-
- key = keys[size];
- if (!(result = _.has(b, key) && eq(a[key], b[key], aStack, bStack))) break;
- }
- }
- }
-
- aStack.pop();
- bStack.pop();
- return result;
- };
-
- _.isEqual = function(a, b) {
- return eq(a, b, [], []);
- };
-
-
- _.isEmpty = function(obj) {
- if (obj == null) return true;
- if (_.isArray(obj) || _.isString(obj) || _.isArguments(obj)) return obj.length === 0;
- for (var key in obj) if (_.has(obj, key)) return false;
- return true;
- };
-
- _.isElement = function(obj) {
- return !!(obj && obj.nodeType === 1);
- };
-
-
- _.isArray = nativeIsArray || function(obj) {
- return toString.call(obj) === '[object Array]';
- };
-
- _.isObject = function(obj) {
- var type = typeof obj;
- return type === 'function' || type === 'object' && !!obj;
- };
-
- _.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp'], function(name) {
- _['is' + name] = function(obj) {
- return toString.call(obj) === '[object ' + name + ']';
- };
- });
-
-
- if (!_.isArguments(arguments)) {
- _.isArguments = function(obj) {
- return _.has(obj, 'callee');
- };
- }
-
- if (typeof /./ !== 'function') {
- _.isFunction = function(obj) {
- return typeof obj == 'function' || false;
- };
- }
-
- _.isFinite = function(obj) {
- return isFinite(obj) && !isNaN(parseFloat(obj));
- };
-
- _.isNaN = function(obj) {
- return _.isNumber(obj) && obj !== +obj;
- };
-
- _.isBoolean = function(obj) {
- return obj === true || obj === false || toString.call(obj) === '[object Boolean]';
- };
-
- _.isNull = function(obj) {
- return obj === null;
- };
-
- _.isUndefined = function(obj) {
- return obj === void 0;
- };
-
-
- _.has = function(obj, key) {
- return obj != null && hasOwnProperty.call(obj, key);
- };
-
-
-
-
- _.noConflict = function() {
- root._ = previousUnderscore;
- return this;
- };
-
- _.identity = function(value) {
- return value;
- };
-
- _.constant = function(value) {
- return function() {
- return value;
- };
- };
- _.noop = function(){};
- _.property = function(key) {
- return function(obj) {
- return obj[key];
- };
- };
-
- _.matches = function(attrs) {
- var pairs = _.pairs(attrs), length = pairs.length;
- return function(obj) {
- if (obj == null) return !length;
- obj = new Object(obj);
- for (var i = 0; i < length; i++) {
- var pair = pairs[i], key = pair[0];
- if (pair[1] !== obj[key] || !(key in obj)) return false;
- }
- return true;
- };
- };
-
- _.times = function(n, iteratee, context) {
- var accum = Array(Math.max(0, n));
- iteratee = createCallback(iteratee, context, 1);
- for (var i = 0; i < n; i++) accum[i] = iteratee(i);
- return accum;
- };
-
- _.random = function(min, max) {
- if (max == null) {
- max = min;
- min = 0;
- }
- return min + Math.floor(Math.random() * (max - min + 1));
- };
-
- _.now = Date.now || function() {
- return new Date().getTime();
- };
-
- var escapeMap = {
- '&': '&',
- '<': '<',
- '>': '>',
- '"': '"',
- "'": ''',
- '`': '`'
- };
- var unescapeMap = _.invert(escapeMap);
-
- var createEscaper = function(map) {
- var escaper = function(match) {
- return map[match];
- };
-
- var source = '(?:' + _.keys(map).join('|') + ')';
- var testRegexp = RegExp(source);
- var replaceRegexp = RegExp(source, 'g');
- return function(string) {
- string = string == null ? '' : '' + string;
- return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;
- };
- };
- _.escape = createEscaper(escapeMap);
- _.unescape = createEscaper(unescapeMap);
-
-
- _.result = function(object, property) {
- if (object == null) return void 0;
- var value = object[property];
- return _.isFunction(value) ? object[property]() : value;
- };
-
-
- var idCounter = 0;
- _.uniqueId = function(prefix) {
- var id = ++idCounter + '';
- return prefix ? prefix + id : id;
- };
-
-
- _.templateSettings = {
- evaluate : /<%([\s\S]+?)%>/g,
- interpolate : /<%=([\s\S]+?)%>/g,
- escape : /<%-([\s\S]+?)%>/g
- };
-
-
-
- var noMatch = /(.)^/;
-
-
- var escapes = {
- "'": "'",
- '\\': '\\',
- '\r': 'r',
- '\n': 'n',
- '\u2028': 'u2028',
- '\u2029': 'u2029'
- };
- var escaper = /\\|'|\r|\n|\u2028|\u2029/g;
- var escapeChar = function(match) {
- return '\\' + escapes[match];
- };
-
-
-
-
- _.template = function(text, settings, oldSettings) {
- if (!settings && oldSettings) settings = oldSettings;
- settings = _.defaults({}, settings, _.templateSettings);
-
- var matcher = RegExp([
- (settings.escape || noMatch).source,
- (settings.interpolate || noMatch).source,
- (settings.evaluate || noMatch).source
- ].join('|') + '|$', 'g');
-
- var index = 0;
- var source = "__p+='";
- text.replace(matcher, function(match, escape, interpolate, evaluate, offset) {
- source += text.slice(index, offset).replace(escaper, escapeChar);
- index = offset + match.length;
- if (escape) {
- source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'";
- } else if (interpolate) {
- source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'";
- } else if (evaluate) {
- source += "';\n" + evaluate + "\n__p+='";
- }
-
- return match;
- });
- source += "';\n";
-
- if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n';
- source = "var __t,__p='',__j=Array.prototype.join," +
- "print=function(){__p+=__j.call(arguments,'');};\n" +
- source + 'return __p;\n';
- try {
- var render = new Function(settings.variable || 'obj', '_', source);
- } catch (e) {
- e.source = source;
- throw e;
- }
- var template = function(data) {
- return render.call(this, data, _);
- };
-
- var argument = settings.variable || 'obj';
- template.source = 'function(' + argument + '){\n' + source + '}';
- return template;
- };
-
- _.chain = function(obj) {
- var instance = _(obj);
- instance._chain = true;
- return instance;
- };
-
-
-
-
-
-
- var result = function(obj) {
- return this._chain ? _(obj).chain() : obj;
- };
-
- _.mixin = function(obj) {
- _.each(_.functions(obj), function(name) {
- var func = _[name] = obj[name];
- _.prototype[name] = function() {
- var args = [this._wrapped];
- push.apply(args, arguments);
- return result.call(this, func.apply(_, args));
- };
- });
- };
-
- _.mixin(_);
-
- _.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) {
- var method = ArrayProto[name];
- _.prototype[name] = function() {
- var obj = this._wrapped;
- method.apply(obj, arguments);
- if ((name === 'shift' || name === 'splice') && obj.length === 0) delete obj[0];
- return result.call(this, obj);
- };
- });
-
- _.each(['concat', 'join', 'slice'], function(name) {
- var method = ArrayProto[name];
- _.prototype[name] = function() {
- return result.call(this, method.apply(this._wrapped, arguments));
- };
- });
-
- _.prototype.value = function() {
- return this._wrapped;
- };
-
-
-
-
-
-
-
- if (typeof define === 'function' && define.amd) {
- define('underscore', [], function() {
- return _;
- });
- }
- }.call(this));
|