Add an optional step width to the range operator

[raphael-sys]

DESCRIPTION

What does your feature request improve on? Please describe. It would be helpful to have a range operator with a specified step width instead of the default 1 step width.

Describe the solution you'd like So far I can select a table range using test() = myTable(1:20) I would expect the new behaviour to allow a more flexibel selection like test() = myTable(1:2:20) where only every second element (1, 3, 5, ...) would be selected.

Additional context Currently mostly needed for tables and clusters, but I would expect the range operator to (hopefully) be a generic one and therefore this improvement might come in handy in other cases, too.

(Do not write below this line)

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DEVS' SECTION

ANALYSIS

(Describe, what's the issue and which changes have to be made)

IMPLEMENTATION

(see also our Wiki for implementation guidelines)

• Implementation: (Describe, what you've changed)
• Implementation test: (Describe the type of test, which you performed, and if it was successful)

DOCUMENTATION

(see also our Wiki for further information)

• [ ] ChangesLog updated
• [ ] Code changes commented
• Documentation articles:
  • [ ] corresponding documentation articles updated
  • [ ] new documentation articles created
  • [ ] not needed
• Language files:
  • [ ] corresponding language files updated
  • [ ] not needed

TESTS

(Describe, which tests you performed and their outcome)

[raphael-sys]

Can already be solved using the following syntax myTable({1:2:20})

[raphael-sys]

Add appropriate help entry to documentation is now a separate issue #34