To be clear, "How do I do [something]" and "I'm too lazy to try something" are not the same thing. The reason such questions are so popular is because many people find them useful or interesting. Like it or not, those questions attracted votes because they attracted views. If you google "How t...

I had a question in an interview asking whether it was possible to use an existing pointer to point to another object on the stack reliably without directly referencing the second variable. For example: int main() { int a = 10; int b = 20; int *p = &a; } Can we get p to point to b...

Yes, it's a bad practice in almost every language. Types are not there to encode data; they're an aid to prove that your data goes where it needs to go and behaves like it needs to behave. The only reason to sub-type is if a polymorphic behavior changes (and not always then). Since there's no ...

I'm playing with Go and run into something I'm unable to find in Google, although there is certainly something that exists: I'm using the following struct: type Syntax struct { name string extensions *regexp.Regexp } type Scanner struct { classifier * bayesian.Classifier save_file stri...

You can do operator chaining if you only want to test for two variables that may be None: if x is None is y: In Python, operator chaining makes a op b op c the same as a op b and b op c except b is only evaluated once. You can also do all: possibly_none = (x, y, z) if all(i is None for i in ...