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Set time part of DateTime in ruby

Say I have a datetime object eg DateTime.now . I want to set hours and minutes to 0 (midnight). How can I do that? 4 Ans...
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The type must be a reference type in order to use it as parameter 'T' in the generic type or method

I'm getting deeper into generics and now have a situation I need help with. I get a compile error on the 'Derived' class below as shown in the subject title. I see many other posts similar to this one but I'm not seeing the relationship. Can someone tell me how to resolve this? ...
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Why are two different concepts both called “heap”?

Why are the runtime heap used for dynamic memory allocation in C-style languages and the data structure both called "the heap"? Is there some relation? ...
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multi-step registration process issues in asp.net mvc (split viewmodels, single model)

... POST actions should look like. I am leaving this improvement for the next time :-) share | improve this answer | follow | ...
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pandas three-way joining multiple dataframes on columns

I have 3 CSV files. Each has the first column as the (string) names of people, while all the other columns in each dataframe are attributes of that person. ...
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Why am I getting a NoClassDefFoundError in Java?

...ere is a class file that your code depends on and it is present at compile time but not found at runtime. Look for differences in your build time and runtime classpaths. share | improve this answe...
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In Objective-C, what is the equivalent of Java's “instanceof” keyword?

I would like to check whether an object (e.g. someObject ) is assignable (cast-able) to a variable of another type (e.g. SpecifiedType ). In Java, I can write: ...
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Is a statically-typed full Lisp variant possible?

Is a statically-typed full Lisp variant possible? Does it even make sense for something like this to exist? I believe one of a Lisp language's virtues is the simplicity of its definition. Would static typing compromise this core principle? ...
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BCL (Base Class Library) vs FCL (Framework Class Library)

What's the difference between the two? Can we use them interchangeably? 6 Answers 6 ...
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Max retries exceeded with URL in requests

... (you're sending too many requests from same ip address in short period of time) Max retries exceeded with url: /in/app/adobe-reader/id469337564?mt=8 error trace is misleading it should be something like "No connection could be made because the target machine actively refused it". There is a...