MaplePrimes - answers and comments on Question, sum of a list

summing over a list

Axel Vogt — Mon, 08 Mar 2010 14:24:07 Z

L:=[1,2,3,4,5];
S:=convert(L, `+`);
f(S);

                               S := 15

                                f(15)

Joe Riel — Tue, 09 Mar 2010 10:09:17 Z

Another possibility is

add(x, x in L);

As a procedure:

f := proc(L) 
local x;
    add(x, x in L);
end proc:

Function composition can also be used

f := `+`@op:
f([a,b,c]);
                  a + b + c

Robert Israel — Tue, 09 Mar 2010 09:48:11 Z

Or as a procedure:

> AddList:= rcurry(convert,`+`);

> AddList([a,b,c]);

a+b+c