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Scala: Abstract types vs generics
...orm of object-oriented abstraction. So in a sense you could say Scala is a more orthogonal and complete language.
Why?
What, in particular, abstract types buy you is a nice treatment for these covariance problems we talked about before.
One standard problem, which has been around for a long time, ...
Why is the Fibonacci series used in agile planning poker? [closed]
...corresponding to the Fibonacci scale may or may not be optimal.
Here is a more detailed explanation of the mathematical justification: http://www.yakyma.com/2012/05/why-progressive-estimation-scale-is-so.html
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What is the difference between a database and a data warehouse?
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Check out this for more information.
From a previous link:
Database
Used for Online Transactional Processing (OLTP) but can be used for other purposes such as Data Warehousing. This records the data from the user for history.
The tables and...
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Reverse a string in Python
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@Paolo's s[::-1] is fastest; a slower approach (maybe more readable, but that's debatable) is ''.join(reversed(s)).
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What is the difference between a HashMap and a TreeMap? [duplicate]
... a HashMap, you can't be sure what order they will be in.
HashMap will be more efficient in general, so use it whenever you don't care about the order of the keys.
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How do you track record relations in NoSQL?
...same criteria you would use to denormalize a relational database: if it's more important for data to have cohesion (think of values in a comma-separated list instead of a normalized table), then do it that way.
But this inevitably optimizes for one type of query (e.g. comments by any user for a gi...
Why is “except: pass” a bad programming practice?
...ccurred there and lose any help to debug it correctly.
But there are also more dangerous exceptions which we are unlikely prepared for. For example SystemError is usually something that happens rarely and which we cannot really plan for; it means there is something more complicated going on, someth...
Resolve Git merge conflicts in favor of their changes during a pull
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Swift performSelector:withObject:afterDelay: is unavailable [duplicate]
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