Where are the constructors?
Seed7 does not need constructors, but you can define normal functions which create a new value in a similar way as constructors do it. Seed7 uses a special create statement ( ::= ) to initialize objects. Explicit calls of the create statement are not needed. The lifetime of an object goes like this: • Memory is reserved for the new object (stack or heap memory make no difference here). • The content of the new memory is undefined (It may contain garbage), therefore a create statement is necessary instead of an assignment. • The create statements copies the right expression to the left expression taking into account that the left expression is undefined. • If the object is variable other values can be assigned using the assign statement ( := ). The assignment can assume that the left expression contains a legal value. This allows that for strings (and some other types which are just references to a memory area) the memory containing the old string value (and not the memory of the object
