小编Gui*_*ehn的帖子

Ruby %w(don matt james)和%w[don matt james]Ruby 之间有区别吗？

使用Ruby控制台,它们都输出一个数组,每个单词作为一个元素.我很好奇为什么有多种方法可以做到这一点 - 以及应该如何使用每种方式.

我正在尝试使用 php 排序函数按字母顺序对数组进行排序。

Array ( [0] => Open Sans [1] => Wellfleet [2] => Rambla [3] => Dosis [4] => Noto Sans [5] => Domine [6] => Signika Negative [7] => Arvo [8] => Neuton [9] => Rufina [10] => Tinos [11] => Podkova [12] => Magra [13] => Bitter [14] => Anton [15] => Libre Baskerville [16] => Tienne [17] => Roboto [18] => Ruda [19] => Merriweather [20] => Amaranth [21] => Playfair Display SC [22] => Cinzel …

为什么pluck()和where()方法不起作用？

var Model = Backbone.Model.extend({
    name:'sasha',
    time:'now',id:67            
})

var model = new Model;

var Model2 = Backbone.Model.extend({
    name:'andrii',
    time:'now',id:45
})

var model2 = new Model2;

var Model3 = Backbone.Model.extend({
    name:'sergii',
    time:'now',id:7            
})

var model3 = new Model3;

var Library = Backbone.Collection.extend({
    initialize:function(){console.log('init')}
})

var lib = new Library([model]);

lib.on('add',function(){
    console.log('add event')
})

lib.on('reset',function(){
    console.log('reset event')
})

lib.on('remove',function(){
    console.log('rremove event')
})

lib.push(model);
lib.push(model2);
lib.push(model3);

应该返回用户名时,该pluck方法返回一个undefined值数组.

var names = lib.pluck("name");//[undefined, undefined, undefined]

并且where …