https://guide.aelve.com/haskell/feed/category/hogy1n172018-11-19T09:39:34Zi9677p0v2018-11-19T09:39:34Z<h1> <span class="item-name">row-types</span> (<a href="https://hackage.haskell.org/package/row-types">Hackage</a>) </h1><p>Row-types is a library of open records and variants for Haskell</p> <h2>Pros</h2><ul></ul><h2>Cons</h2><ul></ul>ycgi7y2l2017-07-06T12:04:53Z<h1> <span class="item-name">superrecord</span> (<a href="https://hackage.haskell.org/package/superrecord">Hackage</a>) </h1><h2>Pros</h2><ul></ul><h2>Cons</h2><ul></ul>p5zwue8s2016-08-27T11:14:18Z<h1> <span class="item-name">rawr</span> (<a href="https://hackage.haskell.org/package/rawr">Hackage</a>) </h1><p>Extensible records using GHC 8 features.</p> <h2>Pros</h2><ul><p><li>Do not require Template Haskell to use.</li></p><p><li>Only <code>base</code> dependency.</li></p><p><li>Support pattern matching, merging and partitioning (row-polymorphism) on anonymous records.</li></p><p><li>Support both lazy and strict fields.</li></p><p><li>Provide overloaded labels which can be used as field selectors or lenses.</li></p><p><li>Minimal performance overhead and memory footprint.</li></p></ul><h2>Cons</h2><ul><p><li>Requires GHC &gt;= 8.0.</li></p><p><li>Only support type-level <code>Symbol</code> as indexes. (Unlike <code>Vinyl</code>)</li></p></ul><h2>Ecosystem</h2><p>None, as the package is still very new.</p> tnu820kh2016-08-25T00:11:51Z<h1> <span class="item-name">vinyl</span> (<a href="https://hackage.haskell.org/package/vinyl">Hackage</a>) </h1><h2>Pros</h2><ul></ul><h2>Cons</h2><ul></ul>k24z9tju2016-08-25T00:11:48Z<h1> <span class="item-name">records</span> (<a href="https://hackage.haskell.org/package/records">Hackage</a>) </h1><h2>Pros</h2><ul></ul><h2>Cons</h2><ul></ul>e6uhxk062016-08-25T00:11:37Z<h1> <span class="item-name">lens</span> (<a href="https://hackage.haskell.org/package/lens">Hackage</a>) </h1><p>lens is commonly used to make working with records easier (though it doesn't provide <em>everything</em> that we might want from a records system). Things that are possible with lens:</p> <ul> <li>Updating records: set a field with <code>field .~ x</code>, apply a function to a field with <code>field %~ f</code>.</li> <li>Updating nested records: just chain field names like <code>foo.bar.baz %~ f</code>.</li> <li>Having several records with the same field name: see <a href="http://hackage.haskell.org/package/lens/docs/Control-Lens-TH.html#v:makeFields"><code>makeFields</code></a>.</li> <li>“Subtyping”, i.e. being able to say that a record is a subset of another record: see <a href="http://hackage.haskell.org/package/lens/docs/Control-Lens-TH.html#v:makeClassy"><code>makeClassy</code></a>.</li> </ul> <h2>Pros</h2><ul></ul><h2>Cons</h2><ul></ul>vy6q335h2016-08-25T00:11:28Z<h1> <a href="https://turingjump.com/blog/bookkeeper/" class="item-name">bookkeeper</a> (<a href="https://hackage.haskell.org/package/bookkeeper">Hackage</a>) </h1><h2>Pros</h2><ul></ul><h2>Cons</h2><ul></ul>