Difference between revisions of "Stateless and pure"

Line 9: Line 9:
  
 
With some validity rules for redefinition:
 
With some validity rules for redefinition:
- once a routine is stateless its redefinitions have to be stateless.
+
* once a routine is stateless its redefinitions have to be stateless.
- a stateful routine can become stateless.
+
* a stateful routine can become stateless.

Revision as of 04:26, 29 June 2011

Proposal to have stateless routines to use the equal sign of constants, i.e.

f (a: STRING): SOME_TYPE =
    do
        create Result.make (a)
        ...
    end

With some validity rules for redefinition:

  • once a routine is stateless its redefinitions have to be stateless.
  • a stateful routine can become stateless.