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Sell me on const correctness
So why exactly is it that it's always recommended to use const as often as possible? It seems to me that using const can be more of a pain than a help in C++. But then again, I'm coming at this from the python perspective: if you don't want something to be changed, don't change it. So with that ...
Find size of an array in Perl
...n an array, and of the first character in a substring" (perldoc perlvar). It's set to 0 by default, and setting it to anything other than 0 is highly discouraged.
– Keith Thompson
Sep 13 '11 at 18:52
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Check if an apt-get package is installed and then install it if it's not on Linux
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edited Aug 19 '09 at 6:39
answered Aug 19 '09 at 6:27
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When is the finalize() method called in Java?
... finalize() method is called in the JVM . I created a test class which writes into a file when the finalize() method is called by overriding it. It is not executed. Can anybody tell me the reason why it is not executing?
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When should I create a destructor?
...sive unmanaged resource that must be cleaned up when the object goes away. It is better to use the disposable pattern to ensure that the resource is cleaned up. A destructor is then essentially an assurance that if the consumer of your object forgets to dispose it, the resource still gets cleaned up...
Mocking member variables of a class using Mockito
I am a newbie to development and to unit tests in particular .
I guess my requirement is pretty simple, but I am keen to know others thoughts on this.
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What is the real overhead of try/catch in C#?
...ntrolling process flow, but where does this overhead come from and what is it's actual impact?
12 Answers
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Why can I change value of a constant in javascript
...o an array or object you're not re-assigning or re-declaring the constant, it's already declared and assigned, you're just adding to the "list" that the constant points to.
So this works fine:
const x = {};
x.foo = 'bar';
console.log(x); // {foo : 'bar'}
x.foo = 'bar2';
console.log(x); // {f...
Does Python have “private” variables in classes?
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It's cultural. In Python, you don't write to other classes' instance or class variables. In Java, nothing prevents you from doing the same if you really want to - after all, you can always edit the source of the class itsel...
What does auto&& tell us?
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By using auto&& var = <initializer> you are saying: I will accept any initializer regardless of whether it is an lvalue or rvalue expression and I will preserve its constness. This is typically used for forwarding (usually with T&&). The r...