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| author | Tobias Dammers <tdammers@gmail.com> | 2017-10-25 19:09:03 -0400 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2017-10-25 19:18:42 -0400 |
| commit | dbd81f7e86514498218572b9d978373b1699cc5b (patch) | |
| tree | 5c4527f5405e67d0de0006fc07dd132162c3b96d /packages | |
| parent | 4c06ccb71737b77a8165e888ad75417a425549dd (diff) | |
| download | haskell-dbd81f7e86514498218572b9d978373b1699cc5b.tar.gz | |
Factor out readField (#14364)
Improves compiler performance of deriving Read instances, as suggested
in the issue.
Additionally, we introduce `readSymField`, a companion to `readField`
that parses symbol-type fields (where the field name is a symbol, e.g.
`(#)`, rather than an alphanumeric identifier. The decision between
these two functions is made a compile time, because we already know
which one we need based on the field name.
Reviewers: austin, hvr, bgamari, RyanGlScott
Reviewed By: bgamari
Subscribers: RyanGlScott, rwbarton, thomie
Differential Revision: https://phabricator.haskell.org/D4108
Diffstat (limited to 'packages')
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