_.zip = function() {
var args = slice.call(arguments);
var length = _.max(_.pluck(args, 'length'));
var results = new Array(length);
for (var i = 0; i < length; i++) results[i] = _.pluck(args, "" + i);
return results;
};
exports.listInfo = function (url, list, show_details, callback) {
var db = couchdb(url);
var colwidth = _.max(list.map(function (l) {
return l.length;
}));
async.forEachSeries(list, function (l, cb) {
if (show_details) {
db.client('GET', l, {}, function (err, info) {
if (err) {
if (err.error === 'unauthorized') {
console.log(l);
return cb();
}
return cb(err);
}
console.log(
utils.padRight(l, colwidth + 4) +
utils.padRight(info.doc_count + ' docs', 16) +
utils.formatSize(info.disk_size)
);
cb();
});
}
else {
console.log(l);
setImmediate(cb);
}
}, callback);
};
assignItemID: function(item) {
'use strict';
if (this.built.length === 0) {
item.id = 1;
return;
}
item.id = _.max(this.built, function(e) {
return e.id;
}).id + 1;
},
var ngrams = function(sequence, n) {
var result = [];
if (!_(sequence).isArray()) {
return result;
}
var count = _.max([0, sequence.length - n + 1]);
for (var i = 0; i < count; i++) {
result.push(sequence.slice(i,i+n));
}
return result;
}
setTimeout(function() {
if(!_.isNull(this.game)) {
if(this.game.found.length > 0) {
var winner = _.invert(this.game.scores)[_.max(this.game.scores)];
event.reply('GAME OVER. THE WINNER IS ' + winner.toUpperCase() + ' WITH ' + this.game.scores[winner]);
event.reply(this.game.solutions.length - this.game.found.length + ' solutions remained.');
} else {
event.reply('NO SOLUTIONS FOUND. YOU ARE ALL RUBBISH.');
}
this.game = null;
}
}.bind(this), 40000);
var ngrams = function(sequence, n, startSymbol, endSymbol) {
var result = [];
if (!_(sequence).isArray()) {
sequence = tokenizer.tokenize(sequence);
}
var count = _.max([0, sequence.length - n + 1]);
// Check for left padding
if(typeof startSymbol !== "undefined" && startSymbol !== null) {
// Create an array of (n) start symbols
var blanks = [];
for(var i = 0 ; i < n ; i++) {
blanks.push(startSymbol);
}
// Create the left padding
for(var p = n - 1 ; p > 0 ; p--) {
// Create a tuple of (p) start symbols and (n - p) words
result.push(blanks.slice(0, p).concat(sequence.slice(0, n - p)));
}
}
// Build the complete ngrams
for (var i = 0; i < count; i++) {
result.push(sequence.slice(i, i + n));
}
// Check for right padding
if(typeof endSymbol !== "undefined" && endSymbol !== null) {
// Create an array of (n) end symbols
var blanks = [];
for(var i = 0 ; i < n ; i++) {
blanks.push(endSymbol);
}
// create the right padding
for(var p = n - 1 ; p > 0 ; p--) {
// Create a tuple of (p) start symbols and (n - p) words
result.push(sequence.slice(sequence.length - p, sequence.length).concat(blanks.slice(0, n - p)));
}
}
return result;
}
this.listener = function(event) {
if(!_.isNull(this.game) && this.game.channel === event.channel.name) {
if(_.include(this.game.solutions, event.message) && !_.include(this.game.found, event.message)) {
if(!_.has(this.game.scores, event.user)) this.game.scores[event.user] = 0;
this.game.scores[event.user]++;
this.game.found.push(event.message);
event.reply(event.user + ': ' + event.message.toUpperCase() + ' IS CORRECT. ' +
this.game.found.length + '/' + this.game.solutions.length + ' WORDS FOUND');
if(this.game.found.length === this.game.solutions.length) {
var winner = _.invert(this.game.scores)[_.max(this.game.scores)];
event.reply('ALL WORDS FOUND. THE WINNER IS ' + winner.toUpperCase() + ' WITH ' + this.game.scores[winner]);
this.game = null;
}
}
}
}.bind(this);
// contains: 判断元素是否在list中
console.log(_.contains([1,2,3,4], 8));
// invoke: 在list里的每个元素上调用名为methodName的函数,任何附加的函数传入，invoke将会转给调用的函数
var v = _.invoke([[2,1,3], [4,5,2]], 'sort')
console.log("v", v);
// pluck: 提取一个集合里指定的属性值
var users = [
{name:'moe', age: 40},
{name:'larry', age: 50}
];
console.log(_.pluck(users, 'name'));
// max, min, sortBy：取list中的最大，最小元素，自定义比较器
console.log(_.max(users, function(stooge){
return stooge.age
}));
console.log(_.min(users, function(stooge){
return stooge.age //{ name: 'moe', age: 40 }
}));
console.log(_.sortBy([3,4,1,2,6], function(num){
return Math.max(num);//[ 1, 2, 3, 4, 6 ]
}));
// groupBy 一个集合分成多个集合
console.log(_.groupBy(['one', 'two', 'three'], 'length'));//{ '3': [ 'one', 'two' ], '5': [ 'three' ] }
// size 得到list中元素个数
console.log(_.size({one:1, two:2, three: 3})); //3
// shuffle：随机打乱一个数据
console.log(_.shuffle([1,2,3,4,5,6,7]));
// countBy 把一个数据分组后计数
Helpers.prototype.getRange = function(array) {
return _.max(array) - _.min(array);
}