I think you are very confused about what is occurring. In Python, everything is an object: [] (a list) is an object ‘abcde’ (a string) is an object 1 (an integer) is an object MyClass() (an instance) is an object MyClass (a class) is also an object list (a type–much like a class) is also …
The second and third arguments to the ternary operator are expressions, not statements. return a is a statement
There are several ways. All have their pluses and minuses. Have the function return an error code and pass in a pointer to a location to return the result. The nice thing about this there’s no overloading of the result. The bad thing is that you can’t use the real result of the function directly …
Yes, you can return from a void function. Interestingly, you can also return void from a void function. For example: void foo() { return void(); } As expected, this is the same as a plain return;. It may seem esoteric, but the reason is for template consistency: template<class T> T default_value() { return T(); } …
No, you can’t prevent the object from being destroyed by return statement, it just means the execution of the dtor’s body will end at that point. After that it still will be destroyed (including its members and bases), and the memory still will be deallocated. You migth throw exception. Class2::~Class2() noexcept(false) { if (status != …
Technically, semi colons in javascript are optional. But in reality it just inserts them for you at certain newline characters if it thinks they are missing. But the descisions it makes for you are not always what you actually want. And a return statement followed by a new line tells the JS intepreter that a …
print simply prints out the structure to your output device (normally the console). Nothing more. To return it from your function, you would do: def autoparts(): parts_dict = {} list_of_parts = open(‘list_of_parts.txt’, ‘r’) for line in list_of_parts: k, v = line.split() parts_dict[k] = v return parts_dict Why return? Well if you don’t, that dictionary dies …
return a && b means “return a if a is falsy, return b if a is truthy”. It is equivalent to if (a) return b; else return a;
I create various return types using enum. It doesn’t defined automatically. That implementation look like factory pattern. public enum SmartReturn { IntegerType, DoubleType; @SuppressWarnings(“unchecked”) public <T> T comeback(String value) { switch (this) { case IntegerType: return (T) Integer.valueOf(value); case DoubleType: return (T) Double.valueOf(value); default: return null; } } } Unit Test: public class MultipleReturnTypeTest { …