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<br class=""><div><blockquote type="cite" class=""><div class="">On 18 Dec, 2015, at 15:31, Kevin Ballard via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
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<div class=""><div class="">On Fri, Dec 18, 2015, at 03:04 PM, Chris Lattner via swift-evolution wrote:<br class=""></div>
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<div class=""><blockquote type="cite" class=""><div class="">On Dec 18, 2015, at 3:03 PM, Stephen Canon <<a href="mailto:scanon@apple.com" class="">scanon@apple.com</a>> wrote:<br class=""></div>
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<div class=""><blockquote type="cite" class=""><div class="">On Dec 18, 2015, at 5:57 PM, Chris Lattner <<a href="mailto:clattner@apple.com" class="">clattner@apple.com</a>> wrote:<br class=""></div>
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<div class=""><div style="word-wrap:break-word;-webkit-line-break:after-white-space;" class=""><div class="">On Dec 18, 2015, at 1:12 PM, Stephen Canon via swift-evolution <<a href="mailto:swift-evolution@swift.org" class="">swift-evolution@swift.org</a>> wrote:<br class=""></div>
<div class=""><blockquote type="cite" class=""><div class=""><div style="word-wrap:break-word;-webkit-line-break:after-white-space;" class=""><div class="">Hi everybody —<br class=""></div>
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<div class="">I’d like to propose removing the “%” operator for floating-point types.<br class=""></div>
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<div class="">I support removing this - it is actively harmful for a surprising operation like this to have such short and inviting syntax. As asked downthread, have you given any thought into whether a Decimal type would support this operation?<br class=""></div>
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<div class="">The same concerns apply to decimal. It makes sense to have the operation (for both binary and decimal floating-point) as “Type.remainder(a,b)” or a free function like "remainder(a, b)”, but I would prefer not to use the operator “%” for it because it behaves very differently from integer %, and in ways that are not at all obvious to most users.<br class=""></div>
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<div class="">Great, I’d prefer decimal and the float types to have a consistent interface where possible. +1 from me on the proposal.<br class=""></div>
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<div class="">Agreed. +1 from me too. The `10.0 % 0.1` behavior is sufficiently surprising that I think that justifies removal by itself.<br class=""></div>
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<div class="">I'm also in favor of adding mod and remainder as instance methods of the floating point types, e.g. `10.0.mod(0.1)` (as opposed to static methods or free functions).<br class=""></div></div></div></blockquote>Shouldn’t that be added to any Arithmetic type?<br class=""><blockquote type="cite" class=""><div class=""><div class="">
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<div class="">-Kevin Ballard</div>
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