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# see `semLowerLetVarCustomPragma` for compiler support that enables these
# lowerings
template byaddr*(lhs, typ, ex) =
## Allows a syntax for lvalue reference, exact analog to
## `auto& a = ex;` in C++
runnableExamples:
var s = @[10,11,12]
var a {.byaddr.} = s[0]
a+=100
doAssert s == @[110,11,12]
doAssert a is int
var b {.byaddr.}: int = s[0]
doAssert a.addr == b.addr
when typ is typeof(nil):
let tmp = addr(ex)
else:
let tmp: ptr typ = addr(ex)
template lhs: untyped = tmp[]
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