mve | MVE : model-based value estimation

I have not worked with rpart:predict, but for this function you need a new dataset that has the same variables as the original one, according to the documentation.

So, you should initiate newx with the correct column names:

The function GameInformation::SerializeToArray is bad because it is returning a pointer to non-static local array. The life of the array ends when returning from function and dereferencing pointers pointing at elements of the array after returning is illegal.

Instead of that, you should allocate a buffer on the heap and return a pointer to that.

See https://github.com/symfony/symfony/issues/34238#issuecomment-550206946 - remove Accept-Encoding: gzip from the array of headers if you want to receive a unzipped response, or unzip the response on your own

Solved it thanks to @Frxstrem and @transistor's comments, see code's comment for the change:

The shown program (using return a;) is well-formed since C++17. As such, you need a C++17 conforming compiler to compile it. C++17 support in GCC 7 was experimental (C++17 hadn't been released yet).

Using return std::move(a); is well-formed since C++11, and such should work with much older compilers.

Regarding the different wording that makes it work in C++17:

C++14 (draft):

[class.copy]

When the criteria for elision of a copy/move operation are met, but not for an exception-declaration, and the object to be copied is designated by an lvalue, or when the expression in a return statement is a (possibly parenthesized) id-expression that names an object with automatic storage duration declared in the body or parameter-declaration-clause of t (3.1) he innermost enclosing function or lambda-expression, overload resolution to select the constructor for the copy is first performed as if the object were designated by an rvalue.

When certain criteria are met, an implementation is allowed to omit the copy/move construction of a class object ...

• in a return statement in a function with a class return type, when the expression is the name of a non-volatile automatic object (other than a function or catch-clause parameter)

C++17 (draft):

[class.copy.elision]

An implicitly movable entity is a variable of automatic storage duration that is either a non-volatile object or an rvalue reference to a non-volatile object type. In the following copy-initialization contexts, a move operation is first considered before attempting a copy operation:

• If the expression in a return ([stmt.return]) or co_­return ([stmt.return.coroutine]) statement is a (possibly parenthesized) id-expression that names an implicitly movable entity declared in the body or parameter-declaration-clause of the innermost enclosing function or lambda-expression, or

In short, the automatic move instead of copy from lvalue in return statement rule used to be coupled with the copy/move elision rule which doesn't apply to function parameters. Now, they have been decoupled and the former applies explicitly to function parameters as well.

Your

In the MultivariateExperimentVariant model you could do...

Using declare module "*.scss" will work, when it's in the correct declarations file. I've put it in global.d.ts and the error went away.

I'm still wondering why static imports worked out of the box, so feel free to post a more in-depth answer!

The problem is your definition of ibm. You only coded it for a x of length 1. What does the code do for ibm([0,1000])? How does the if condition react to that x?

I think this is a confusion of how does vectorization occurs. Octave will not call 1000 ibm each with its own individual x, but will call ibm once with all 1000 x as input. How you deal with vector inputs its on you, and your function simply doesn't.

for example, if you replace the if with: