Ruby中的矢量化字符串连接就像R的粘贴功能一样

发布时间：2020-12-17 02:19:40 所属栏目：百科来源：网络整理

导读：我在 Ruby中有两个数组,我希望以元素方式连接在一起.在R中,这就像使用粘贴函数一样简单,因为它是矢量化的： # Rvalues - c(1,2,3)names - c("one","two","three")paste(values,names,sep = " as ")[1] "1 as one" "2 as two" "3 as three" 在Ruby中它有点复

我在 Ruby中有两个数组,我希望以元素方式连接在一起.在R中,这就像使用粘贴函数一样简单,因为它是矢量化的：

# R
values <- c(1,2,3)
names <- c("one","two","three")
paste(values,names,sep = " as ")
[1] "1 as one"   "2 as two"   "3 as three"

在Ruby中它有点复杂,我想知道是否有更直接的方法：

# Ruby
values = [1,3]
names = ["one","three"]
values.zip(names).map { |zipped| zipped.join(" as ") }
 => ["1 as one","2 as two","3 as three"]

解决方法

另一种方式：

values = [1,"three"].to_enum 
values.map{|v|"#{v} as #{names.next}"}
# => ["1 as one","3 as three"]

然而,这有两个以上的数组. OP的版本适用于多个阵列.

（编辑：李大同）

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