[英]Assign vector values to one another
I have two vectors: 我有两个向量:
A = c(letters[1:4])
B = c(1,2,3,4)
How can I code so that each value in B is correspondingly assigned to A as such? 我如何编码,以便B中的每个值都相应地分配给A?
a <- 1
b <- 2
...
Or: 要么:
names(B) <- A
The result: 结果:
> B
a b c d
1 2 3 4
> B['b']
b
2
We can use assign
我们可以使用assign
for(i in seq_along(A)) assign(A[i], B[i])
a
#[1] 1
But it is better to have a named list
instead of having multiple objects in the global environment ie 但最好有一个命名list
而不是在全局环境中有多个对象,即
lst <- as.list(setNames(B, A))
The element can be extracted 可以提取元素
lst[['a']]
#[1] 1
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