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[软技能] 第99天 你有用过单例模式吗？主要运用场景有哪些？ #978

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haizhilin2013 opened this issue Jul 23, 2019 · 5 comments
Open

[软技能] 第99天 你有用过单例模式吗？主要运用场景有哪些？ #978

haizhilin2013 opened this issue Jul 23, 2019 · 5 comments
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@haizhilin2013
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第99天 你有用过单例模式吗？主要运用场景有哪些？
@haizhilin2013 haizhilin2013 added the 软技能 软技能 label Jul 23, 2019
@ghost
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ghost commented Jul 24, 2019

写过用单例模式的框架。ionjs-dev/ionjs

@l8888888
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var A;
(function(name){
var instance;
A = function(name){
if(instance){
return instance
}
//赋值给私有变量
instance = this
//自身属性
this.name = name
}
}())

@forever-z-133
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https://www.cnblogs.com/restartyang/articles/7770856.html
相比引入共同的实例对象，单例模式在需要的时候才 new 会更节约内存。

@xiejunping
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mysql数据库连接就是单例模式，好控制，快速响应

@lizhesystem
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一个类只能初始化一个实例， 例如jqeury的$，vuex里的store的实现都是单例模式。保证对象的唯一性
符合单一职责原则，只能实例化唯一的对象。

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@haizhilin2013 @forever-z-133 @xiejunping @lizhesystem @l8888888