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spec for view types (#15424)

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* spec for view types
* spec additions
* refactoring; there are two different kinds of views
* refactorings and spec additions
* enforce that view types are initialized
* enforce borrowing from the first formal parameter
* enforce lifetimes for borrowing of locals
* typo in the manual
* clarify in the implementation what a borrow operation really is
This commit is contained in:
Andreas Rumpf 2020-09-29 23:42:38 +02:00 • committed by GitHub
commit 4058801607
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11 changed files with 446 additions and 66 deletions
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9
tests/views/tmust_borrow_from_first_parameter.nim Normal file
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@ -0,0 +1,9 @@
discard """
errormsg: "'result' must borrow from the first parameter"
line: 9
"""
{.experimental: "views".}
proc p(a, b: openArray[char]): openArray[char] =
result = b