Fish Wang => YSITD: 或是這樣 var counter = ()=>{ var a = 0; return ()=> a++ } counter() counter() counter(l #5a7d48149e0f610e45361fa0

Fish Wang says to YSITD

或是這樣 var counter = ()=>{ var a = 0; return ()=> a++ } counter() counter() counter(l

at Fri, Feb 9, 2018 3:04 PM