Should I use np.absolute or np.abs?

It’s likely because there a built-in functions with the same name, abs. The same is true for np.amax, np.amin and np.round_. The aliases for the NumPy functions abs, min, max and round are only defined in the top-level package. So np.abs and np.absolute are completely identical. It doesn’t matter which one you use. There are several advantages to the short names: They are shorter and they are known to Python … Read more

C: correct usage of strtok_r

The documentation for strtok_r is quite clear. The strtok_r() function is a reentrant version strtok(). The saveptr argument is a pointer to a char * variable that is used internally by strtok_r() in order to maintain context between successive calls that parse the same string. On the first call to strtok_r(), str should point to the string … Read more

C++ [Error] no matching function for call to

You are trying to call DeckOfCards::shuffle with a deckOfCards parameter: But the method takes a vector<Card>&: The compiler error messages are quite clear on this. I’ll paraphrase the compiler as it talks to you. Error: Paraphrased: Hey, pal. You’re trying to call a function called shuffle which apparently takes a single parameter of type reference-to-deckOfCards, but there is no such function. Error: … Read more

if/else in a list comprehension

You can totally do that. It’s just an ordering issue: In general, And, for list comprehensions with if conditions only, Note that this actually uses a different language construct, a conditional expression, which itself is not part of the comprehension syntax, while the if after the for…in is part of list comprehensions and used to filter elements from the source iterable. Conditional expressions can be … Read more