meta user
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| bio | website | accelerando.euweb.cz |
|---|---|---|
| location | Prague, Czech Republic | |
| age | 50 | |
| visits | member for | 1 year, 4 months |
| seen | Apr 12 at 9:14 | |
| stats | profile views | 51 |
Senior developer, algorithms master, PM, analyst, applied mathematician.
The Three Little Daughters Raiser
Hobbies:
logics, history, psychology, sociology, pedagogics, photo, cycling, hiking.
In past:
space-/astro- geodesist, cartographer, astronomer, teacher, radiometrist on the liquidation of the Chernobyl catastrophe in 1986.
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Feb 29 |
comment |
Who extends interfaces? And why? I see and agree. That is why I checked your answer :-). Thank you. |
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Feb 29 |
comment |
Who extends interfaces? And why? +1. I see and agree. But Joachim Sauer has found my erroneous thinking that T is necessarily a class. So, the answer is his. Your understanding is one(or 2) storey higher :-). My problem was more primitive. Thank you anyway for my development. |
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Feb 29 |
accepted | Who extends interfaces? And why? |
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Feb 29 |
comment |
Who extends interfaces? And why? "(for example if you implement an interface, you need to implement all methods it defines, but you don't need to, if you extend a (non-abstract) class)." Sorry, but T there has to implement every member of the interface. So, your logics won't work there? I think , the main thought is that T could be any type, not only class. And if it would be an interface, it should extend, not implement... Any way is bad. |
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Feb 29 |
comment |
Who extends interfaces? And why? Yes, I have seen already his comment. It will be marked as the answer when put in answer. Till that you both have my thanks and +1. |
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Feb 29 |
comment |
Who extends interfaces? And why? Oh! That the thing I needed to learn, I think. It is the answer. But please, put it in the answer, for other people who will have the same problem. It is not convenient to look for answer in comments. And I can't mark a comment as the answer, too :-) |
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Feb 29 |
comment |
Who extends interfaces? And why? Ok. So, I really do not understand something. I considered it very probable. But you haven' explained the problem at all, sorry. T is a representation of a class. Why in one place I use T extends and in another T implements? |
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Feb 29 |
comment |
Who extends interfaces? And why? Thank you for the code example. So other cases exist. But this yours seems logical to me. On the other side, T is a class, not interface. And it implements. |
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Feb 29 |
comment |
Who extends interfaces? And why? Sorry, I do not understand your thought. --1. Why should we use "a pure type-system perspective" in one case and not in the other? --2. Why the syntactic demands change in these different places? Could you explain it, please. In the answer, if possible. |
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Feb 29 |
awarded | Tag Editor |
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Feb 29 |
revised |
generics wiki excerpt added 89 characters in body |
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Feb 29 |
revised |
generics wiki description added 221 characters in body |
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Feb 29 |
comment |
Who extends interfaces? And why? If we'll use your logics, we should use 'extends SomeInterface' always, not only in generics. |
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Feb 29 |
suggested | suggested edit on generics tag wiki excerpt |
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Feb 29 |
suggested | suggested edit on generics tag wiki |
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Feb 29 |
wiki | created generics description |
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Feb 29 |
wiki | created generics excerpt |
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Feb 29 |
asked | Who extends interfaces? And why? |
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Feb 23 |
answered | Product classifying algorithm - text classification - C# - algorithm suggestions |
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Feb 22 |
revised |
Static functions vs classes added 235 characters in body |
