Most users will use a different way of installing methods.
installMethod(M,A,f) -- installs a function
f as a unary method for the class
A under the name
M. This is the same as M A := f if
M is a function. As currently implemented, this is also the same as
A#M = f.
installMethod(M,A,B,f) -- installs a function
f as a binary method for classes
A and
B under the name
M. This is the same as
M(A,B) := f if
M is a function, or the same as
A M B := f if
M is a binary operator. As currently implemented, this is also the same as
Y#(M,A,B) = f, where
Y is the younger of
A and
B.
installMethod(M,A,B,C,f) -- installs a function
f as a ternary method for classes
A,
B, and
C under the name
M. This is the same as
M(A,B,C) := f if
f is a function. As currently implemented, this is also the same as
Y#(M,A,B,C) = f, where
Y is the youngest of
A,
B, and
C.