如果 assoc-in 支持多个键-值对(并在参数数量为偶数时抛出错误,就像 assoc 一样),那将是件好事
user=> (assoc-in {} [:a :b] 1 [:c :d] 2)
{:a {:b 1}, :c {:d 2}}
user=> (assoc-in {} [:a :b] 1 [:c :d])
IllegalArgumentException: assoc-in 预期在 map/vector 后为偶数参数,找到奇数参数
*补丁:* clj-1771.patch
*预审人员:* Alex Miller