Alex Crichton d48f4995e5 Support 1-reference argument closures
This is work towards #1399, although it's just for one-argument closures
where the first argument is a reference. No other closures with
references in argument position are supported yet
2019-04-01 14:31:21 -07:00
..
2018-09-26 08:26:00 -07:00
2018-09-26 08:26:00 -07:00
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