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Why should I avoid multiple inheritance in C++?
...riticism and as such, is not
implemented in many languages.
Criticisms includes:
Increased complexity
Semantic ambiguity often summarized as the diamond
problem.
Not being able to explicitly inherit multiple times from a single
class
Order of inheritance changing class semantic...
HTML5: Slider with two inputs possible?
...tion.
Attached you'll find a short snippet adapted from a current project including some CSS3 styling to show what you can do (webkit only). I also added some labels to display the selected values.
It uses JQuery but a vanillajs version is no magic though.
(function() {
funct...
Algorithm for classifying words for hangman difficulty levels as “Easy”,“Medium”, or “Hard”
...sses); the i and double l are guessed pretty quickly, but then the options include bill, dill, fill, gill, hill, kill, mill, pill, rill, till, will, and from then on the only option is to guess each letter in turn. Somewhat counterintuitively, longer words are much guessed much more quickly (there j...
Why is MATLAB so fast in matrix multiplication?
...ed over decades in academia. Note that there are multiple implementations, including some closed source such as Intel MKL.
A discussion of how BLAS gets high performance is available here.
BTW, it's a serious pain in my experience to call LAPACK libraries directly from c (but worth it). You need...
When should I mock?
...dependent object to return exactly what you want during a test. That also includes throwing expected exceptions within tests.
A mock replaces that dependency. You set expectations on calls to the dependent object, set the exact return values it should give you to perform the test you want, and/or...
Swift - How to convert String to Double
... this code it won't work in countries where commas are used as separators (including France as @PeterK. mentioned). I tried writing a comment with the solution, but it was too long so I had to make it an answer instead. Here you go: Modified solution
– Jacob R
...
Is List a subclass of List? Why are Java generics not implicitly polymorphic?
...hat you can do with a List<Animal> - you can add any animal to it... including a cat. Now, can you logically add a cat to a litter of puppies? Absolutely not.
// Illegal code - because otherwise life would be Bad
List<Dog> dogs = new ArrayList<Dog>(); // ArrayList implements List
...
Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?
... C.
In case the C++ explanation wasn't clear, here is a test program:
#include <cstdio>
void foo(bool x)
{
std::puts("bool");
}
void foo(int x)
{
std::puts("int");
}
int main()
{
foo(1 == 1);
foo(1);
return 0;
}
The output:
bool
int
As to the question from the co...
Unit testing code with a file system dependency
...ethod will not require a test? The reason that ALL unit testing frameworks include a "verify" feature, is that it is OK to use it. "This is bad because now you have to change the test every time you change the implementation details of your method"... welcome to the world of unit testing.
...
Provide an image for WhatsApp link sharing
How can we include an image in our website to display in WhatsApp when we share a link like this?
19 Answers
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