在
Ruby中,我该怎么做:
[ 1,["green","blue","black"],[ ["1","2"],["3"],["4","5"] ] ]
这个?
[ [1,"green","1"],[1,"3"],"black","4"],"5"],]
解决方法
这个模式对我来说并不完全清楚,但这会得到您提供的示例的预期输出:
data[1]. zip(data[2]). flat_map { |x,ys| [x].product(ys) }. map { |zs| [data[0],*zs] } #=> [[1,# [1,"5"]]