Question: Am I correct about this? Or is there some compelling reason that new needs to be in C++-inspired memory-managed languages like Java, Javascript and C# but not Python?

We don't seem to need it for any reason, and yet it's there. Regardless, it seems to me that many languages which came after C++ simply 'inherited' the new keyword - without really needing it. In C#, which I'm much less familiar with, I think new may have some purpose in terms of distinguishing between object types and value types, but I'm not sure. In Python, an instance is constructed simply by calling the constructor, like: f = Foo()Īt first, this seemed a bit off to me, until it occurred to me that there's no reason for Python to have new, because everything is an object so there's no need to disambiguate between various constructor syntaxes.īut then I thought - what's really the point of new in Java? Why should we say Object o = new Object() ? Why not just Object o = Object() ? In C++ there's definitely a need for new, since we need to distinguish between allocating on the heap and allocating on the stack, but in Java all objects are constructed on the heap, so why even have the new keyword? The same question could be asked for Javascript. Then I started to learn Python, which doesn't have the new keyword.

So, coming from a C++ background, the new keyword in languages like Java, Javascript, and C# seemed natural and obvious to me. You can also construct an object on the stack, without using new - and in fact, this way of constructing objects is much more common in C++. In C++, this is not the only way to construct an object. This syntax seems to have been inherited from C++, where new is used specifically to allocate a new instance of a class on the heap, and return a pointer to the new instance. The new keyword in languages like Java, Javascript, and C# creates a new instance of a class.

Is java and javascript the same