Read a string value in this table without making a copy of the string. The read string is passed to dg, and should not be escaped. If the value for key is not a string, dg is not called.
lookup _key
delegate to receive string
true if the value for key was a string and passed to dg, false otherwise
t[2] = "two"; t.readString(2, str => assert(str == "two"));
See Implementation
Read a string value in this table without making a copy of the string. The read string is passed to dg, and should not be escaped. If the value for key is not a string, dg is not called.