1.2.1.2 About Tcl Namespaces

• Follow the rule “one namespace mean one package”. And reverse it too!.
• Confine a namespace into one unique file, named after the namespace. Eg. namespace Diagram, diagram.tcl.

  If you need more than one file, then consider to split the namespace into several sub-namespace.

• Never implement namespaces in the “sparse way”:

       
       
           namespace eval foo {}
       
           proc foo::a_procedure {...} {...}
           proc foo::another_procedure {...} {...}
           variable foo::a_variable
       
  

  Instead, encapsulate the namespace contents inside it, as in the following example.

       
       
           namespace eval foo {
       
             variable a_variable
       
             proc a_procedure {...} {...}
       
             proc another_procedure {...} {...}
       
          } ;# End of namespace foo
       
  

  In that way, it is very easy to determine the entire contents of a namespace.