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Is ServiceLocator an anti-pattern?
... dep2.DoSomething();
}
}
The maintenance nightmare with that class is that the dependencies are hidden. If you create and use that class:
var myType = new MyType();
myType.MyMethod();
You do not understand that it has dependencies if they are hidden using service location. Now, if we instea...
What is the difference between varchar and nvarchar?
Is it just that nvarchar supports multibyte characters? If that is the case, is there really any point, other than storage concerns, to using varchars ?
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What are the most interesting equivalences arising from the Curry-Howard Isomorphism?
I came upon the Curry-Howard Isomorphism relatively late in my programming life, and perhaps this contributes to my being utterly fascinated by it. It implies that for every programming concept there exists a precise analogue in formal logic, and vice versa. Here's a "basic" list of such analogies...
What is the difference between `let` and `var` in swift?
What is the difference between let and var in Apple's Swift language?
30 Answers
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Passing a String by Reference in Java?
...Text[0] += "foo"; }
From a performance point of view, the StringBuilder is usually the best option.
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In C++, what is a virtual base class?
I want to know what a " virtual base class " is and what it means.
11 Answers
11
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When should I choose Vector in Scala?
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As a general rule, default to using Vector. It’s faster than List for almost everything and more memory-efficient for larger-than-trivial sized sequences. See this documentation of the relative performance of Vector compared to the other collections. There are some downsides to going wi...
What happens when a computer program runs?
...ory tend to load their process images and allocate memory something like this:
+---------+
| stack | function-local variables, return addresses, return values, etc.
| | often grows downward, commonly accessed via "push" and "pop" (but can be
| | accessed randomly, as well; disa...
throwing exceptions out of a destructor
...e vector destructor explicitly invokes the destructor for every element. This implies that if an element destructor throws, the vector destruction fails... There is really no good way to protect against exceptions thrown from destructors, so the library makes no guarantees if an element destructor t...
What is a mixin, and why are they useful?
... I'm from a C/C++/C# background and I have not heard the term before. What is a mixin?
16 Answers
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