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Encapsulation vs Abstraction?
...s away the implementation details related to its state.
Abstraction is a more generic term, it can also be achieved by (amongst others) subclassing. For example, the interface List in the standard library is an abstraction for a sequence of items, indexed by their position, concrete examples of a L...
ActiveMQ or RabbitMQ or ZeroMQ or [closed]
...y experiences with the pros and cons of ActiveMQ vs RabbitMQ vs ZeroMQ. Information about any other interesting message queues is also welcome.
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Are C++ enums signed or unsigned?
Are C++ enums signed or unsigned? And by extension is it safe to validate an input by checking that it is = your min value (assuming you started at 0 and incremented by 1)?
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What is the difference between 'protected' and 'protected internal'?
Can someone please elaborate me the difference between 'protected' and 'protected internal' modifiers in C#?
It looks they behave in same manner.
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APT command line interface-like yes/no input?
Is there any short way to achieve what the APT ( Advanced Package Tool ) command line interface does in Python?
19 Answers
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What are the default access modifiers in C#?
What is the default access modifier for classes, methods, members, constructors, delegates and interfaces?
9 Answers
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What is thread safe or non-thread safe in PHP?
I saw different binaries for PHP, like non-thread or thread safe?
4 Answers
4
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Conventions for exceptions or error codes
Yesterday I was having a heated debate with a coworker on what would be the preferred error reporting method. Mainly we were discussing the usage of exceptions or error codes for reporting errors between application layers or modules.
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Is there a null-coalescing (Elvis) operator or safe navigation operator in javascript?
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You can use the logical 'OR' operator in place of the Elvis operator:
For example displayname = user.name || "Anonymous" .
But Javascript currently doesn't have the other functionality. I'd recommend looking at CoffeeScript if you want an altern...
How to test if a string is JSON or not?
...JAX call, and the server will return either a JSON string with useful data or an error message string produced by the PHP function mysql_error() . How can I test whether this data is a JSON string or the error message.
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