Fix compatibility with Swift 5.0 #77
Merged
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When XMLCoder is compiled in Swift 5.0 mode it causes infinite loops in some tests, apparently due to change in
try?
behaviour introduced in SE-0230. In genericunbox
handling of theString
case withtry? unbox(box)
is always inferred as a call tounbox<String?>
instead of a call tounbox<String>
, as it was in Swift 4.2 mode. This is now fixed with rearranged type hints in this call. Also applied Swift 5.0 migrator suggestion to changeindex
tofirstIndex
.