从数组数组中删除重复对

Question

我有一组对，如下例所示：

array = [["human KIR2DS1", 446.0], ["mouse BMP-4", 446.0], ["mouse BMP-4", 446.0], ["mTIMP2 lot DAAP01", "435a"], ["hKIR3DL3 lot DDBL01", "435a"]]

我想删除数组中的重复对。最简单的方法是什么？

Answer 1

使用Array#uniq：

array.uniq
# => [["human KIR2DS1", 446.0], ["mouse BMP-4", 446.0], ["mTIMP2 lot DAAP01", "435a"], ["hKIR3DL3 lot DDBL01", "435a"]]

或者如果你想修改原始数组：

array.uniq!
array # => [["human KIR2DS1", 446.0], ["mouse BMP-4", 446.0], ["mTIMP2 lot DAAP01", "435a"], ["hKIR3DL3 lot DDBL01", "435a"]]

Answer 2

这也可以用来筛选出重复项并返回一个新的数组，其中没有重复项。我使用传播运算符“ ...”

function unique(array) {
    return [...new Set(array)];
}