題目描述在看lodash源碼的時候看到createSet函數時存在這樣一個判斷 Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY 不太理解后半段的(1 / setToArray(new Set([,-0]))[1]) == INFINITY的意思相關代碼const createSet = (Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY)
? (values) => new Set(values)
: () => {}
lodash.js createSet函數的疑問
BIG陽
2018-10-24 19:53:57
