r - Strange behaviour in c() -


why can't use paste construct string in c()?

c("somekey" = 123)

is ok , prints as:

somekey      123

but

a1 <- "some" a2 <- "key" c(paste(a1, a2) = 123)

produces:

error: unexpected '=' in "    c(paste(a1, a2) ="

strangely enough, can this:

key <- paste(a1, a2) c(key = 123)

you looking setnames, returns named vector specified names , values:

setnames(123, paste0(a1, a2)) # somekey  #     123  all.equal(setnames(123, paste0(a1, a2)), c("somekey" = 123)) # [1] true

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