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C# language proposal: loose keyword
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| webserviceproxynamespace.LatLng latlng = new webserviceProxy().GetLatLng("Orlando, FL, 32803"); | |
| anotherproxynamespace.LatLng latlng2 = new anotherwebservice().GetPosition("Orlando", "FL", "32803"); | |
| //this other library wants a LatLng object | |
| var map = new Mapping.MapManager(); | |
| map.MarkPosition(loose latlng); //parameter type is Mapping.LatLng but latlng is webserviceproxynamespace.LatLng type, should work! | |
| map.MarkPosition(loose latlng2); //parameter type is Mapping.LatLng but latlng2 is anotherproxynamespace.LatLng type, should work! | |
| //how does this work? | |
| //loose keyword says maybe c# compiler automaps via dynamic object and runtime IL | |
| //key is, for most simple types, being able to pass these object with the same shape (names of properties) | |
| //currently this is always handled by automappers or repititive map coding | |
| //type definitions | |
| namespace Mapping | |
| { | |
| public class record LatLng(double Lat, double Lng); | |
| public class Mapper | |
| { | |
| public bool MarkPosition(Mapping.LatLng latlng) => return true; | |
| } | |
| } | |
| namespace webserviceproxynamespace | |
| { | |
| public class LatLng(decimal Lat, decimal Lng); | |
| public class WebserviceProxy | |
| { | |
| public LatLng GetLatLng(string locationDefinition) => return new LatLng(0,0); | |
| } | |
| } | |
| namespace anotherproxynamespace | |
| { | |
| public class LatLng(float Lat, float Lng); | |
| public class anotherwebservice | |
| { | |
| public LatLng GetPosition(string city, string state, string zip) => return new LatLng(1,1); | |
| } | |
| } |
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