The "Default Interface Methods" (DIM) is now the longest thread of C# proposal
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Default methods, great idea. If they switch .net to use binary interfaces this could be implemented by placing the default method at a pre-defined location of the interface, maybe the fourth entry in the interface so it's all standardised.
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If they want to add methods to interfaces, and if that doesn't break the multiple interface inheritance feature, why can't we inherit multiple classes as well?
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013 -
Yay, a new abstraction layer. Just what I needed in my day; not like I don't find myself editing out all the ones I inadvertently add already during the initial overthink. One day I should get YAGNI tattooed on the back of my hand :/
"Never attribute to malice that which can be explained by stupidity." - Hanlon's Razor
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If they want to add methods to interfaces, and if that doesn't break the multiple interface inheritance feature, why can't we inherit multiple classes as well?
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013John Simmons / outlaw programmer wrote:
why can't we inherit multiple classes as well?
Because classes can have data and then you have diamond problem...
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John Simmons / outlaw programmer wrote:
why can't we inherit multiple classes as well?
Because classes can have data and then you have diamond problem...
It wasn't a "problem" in C++ - just sayin...
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013 -
It wasn't a "problem" in C++ - just sayin...
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013Many things weren't "problems" in C++, but I doubt C# designers want to take this route :)
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It wasn't a "problem" in C++ - just sayin...
".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013It was much worse than a problem - it was a complication. If you've ever implemented COM in C++ or non-trivial owner-draw for MFC you have to be very aware of the complexities of multiple inheritance. I've done a lot of programming with C# over the last ten years. There have only been a couple of times where something would have been more concise using multiple inheritance, rather than single inheritance and multiple interfaces.
Software Zen:
delete this; -
It was much worse than a problem - it was a complication. If you've ever implemented COM in C++ or non-trivial owner-draw for MFC you have to be very aware of the complexities of multiple inheritance. I've done a lot of programming with C# over the last ten years. There have only been a couple of times where something would have been more concise using multiple inheritance, rather than single inheritance and multiple interfaces.
Software Zen:
delete this;In MFC, you could only multiple inherit if only one of the classes being inherited was not derived from
CObject. The reason it can't be done in .Net is that ALL objects are inherited fromObject, and there's no way to avoid it. They could easily fix it with an attribute, but no, they'd rather adhere to their arbitrary restrictions.".45 ACP - because shooting twice is just silly" - JSOP, 2010
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You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
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When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
