Dear all,
I want to concatenate the elements of two vectors such as
a<-c("a1","a2")
b<-c("b1","b2")
and obtain
"a1b1", "a1b2","a2b1","a2b2"
I tried the paste and paste0 functions, but they yielded elementwise
concatenation such as
"a1b1","a2b2"
I am wondering that is there an efficient way of doing my wish, for instance
without using for loop etc.
Best
Ozgur
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