var a = 1
var b = 2
// 1
a = a + b
b = a - b
a = a - b
// 2
c = a
a = b
b = c
// 3
a = [a, b]
b = a[0]
a = a[1]
// 4
a = a ^ b
b = a ^ b
a = a ^ b
// 5
a = [b, b = a][0]
// 6
a = {a: a, b: b}
b = a.a
a = a.b
posted on
2023-01-23 20:04转眼春夏秋冬如烟
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