Dear R-helpers:
I am an R newbie and have a question related to writing functions that
accept unlimited number of input arguments.
(I tried to peek into functions such as paste and cbind, but failed, I
cannot see their codes..)

Can someone kindly show me through a summation example?
Say, we have input scalar,  1 2 3 4 5
then the ideal function, say sum.test, can do
(1+2+3+4+5)==sum.test(1,2,3,4,5)

Also sum.test can work as the number of input scalar changes.

Many thanks in advance!

-sean

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