Loops/Wrong ranges: Difference between revisions
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In both instances (below), it is a precondition (Design by Contract) error to attempt to step negative in a positive stepping iterator. If you want to go backwards, then do a reverse call on the cursor and provide a positive step value. Even in the example provided, these are logic errors (bugs) and not real examples of correct code. |
In both instances (below), it is a precondition (Design by Contract) error to attempt to step negative in a positive stepping iterator. If you want to go backwards, then do a reverse call on the cursor and provide a positive step value. Even in the example provided, these are logic errors (bugs) and not real examples of correct code. |
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1. ⟳ ic:(-2 |..| 2).new_cursor - 1 ¦ do_nothing ⟲ |
1. ⟳ ic:(-2 |..| 2).new_cursor - 1 ¦ do_nothing ⟲ |
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2. ⟳ ic:(2 |..| 2).new_cursor - 1 ¦ do_nothing ⟲ |
2. ⟳ ic:(2 |..| 2).new_cursor - 1 ¦ do_nothing ⟲ |
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