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d102b2f54c
* deprecate unsafeAddr; extend addr
addr is now available for all addressable locations, unsafeAddr is deprecated and become an alias for addr
* follow @Vindaar's advice
* change the signature of addr
* unsafeAddr => addr (stdlib)
* Update changelog.md
* unsafeAddr => addr (tests)
* Revert "unsafeAddr => addr (stdlib)"
This reverts commit ab83c99c50.
* doc changes; thanks to @konsumlamm
Co-authored-by: konsumlamm <44230978+konsumlamm@users.noreply.github.com>
Co-authored-by: konsumlamm <44230978+konsumlamm@users.noreply.github.com>
49 lines
678 B
Nim
49 lines
678 B
Nim
discard """
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output: '''
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foo
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C
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3.14
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foo
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3.14
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3.14
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'''
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"""
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type
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V = enum
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A, B, C
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X = object
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f0: string
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case f1: V
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of A: f2: string
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of B: discard
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of C: f3: float
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var obj = X(f0: "foo", f1: C, f3: 3.14)
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block:
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echo obj.f0
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echo obj.f1
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doAssertRaises(FieldDefect): echo obj.f2
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echo obj.f3
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block:
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let a0 = addr(obj.f0)
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echo a0[]
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# let a1 = addr(obj.f1)
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# echo a1[]
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doAssertRaises(FieldDefect):
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let a2 = addr(obj.f2)
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echo a2[]
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let a3 = addr(obj.f3)
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echo a3[]
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# Prevent double evaluation of LHS
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block:
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var flag = false
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proc wrap(x: X): X =
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doAssert flag == false
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flag = true
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result = x
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echo wrap(obj).f3
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