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@@ -0,0 +1,32 @@
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+(function() {
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+ // 泛型：先用字符去指代未知类型 使用时在传入具体的类型
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+ // function fn1<T>(name:T):T {
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+ // return name;
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+ // }
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+ // fn1(12);
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+ // fn1('22');
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+
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+ function fn1<T,W>(name:T,x:W):[T,W] {
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+ return [name,x];
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+ }
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+ fn1(12,12);
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+ fn1('22','ss');
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+
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+ interface happy {
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+ jump:string
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+ }
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+ function fn3<T extends happy>(a:T):T {
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+ return a;
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+ }
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+ fn3({jump:'1212'})
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+
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+ class Ending<T extends happy> {
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+ name:T;
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+ constructor(name:T) {
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+ this.name = name;
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+ }
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+ }
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+
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+ let e = new Ending({jump:'1212'})
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+ // Omit Pick区别
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+})()
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zheng