|Title:||[TIP#274] right associativity for ** operator|
|Submitter:||dgp||Created on:||2006-09-12 03:18:39|
|Subsystem:||45. Parsing and Eval||Assigned To:||dgp|
|Status:||Closed||Last Modified:||2006-11-05 10:29:47|
|Closed on:||2006-11-05 03:29:47|
David Smith has observed on the tcl-core mailing list that left associativity of the ** operator proposed by TIP 123 and implemented in current devlopment sources of Tcl is at odds with several other languages and computing environments. Attached is a patch that changes ** to right associativity. Here it is in action: % expr 2**3**4 2417851639229258349412352 I note that there are zero tests in the test suite checking the associativity of **, which I take as evidence that the original left-associative implementation choice wasn't a feature of great importance.
dgp added on 2006-11-05 10:29:47:
Logged In: YES user_id=80530 TIP 274 Accepted. Patch committed.
dgp added on 2006-09-12 10:18:39:
File Added - 193061: expon.patch
- expon.patch [download] added by dgp on 2006-09-12 10:18:39. [details]