String Concatenation #

str a = 33 # " inch";
str b = 1 # 2 # 3;

String concatenation using the # operator is carried out using a new StrBuf for each expression. For performance, it's often better to use a StrBuf manually, preallocating it to a suitable size, and thereby avoiding a lot of redundant allocation of temporary memory.

You could also use #= to concatenate strings.

str a = "P";
a #= "ADDED";

Symbol #

symbol a = #alpha;
symbol b = #"beta and gamma";

Resource Lookup $

str a = $cancelButtonLabel;

Resolves to getRs("cancelButtonLabel", #:package).