Specification | Base class with tests for adding specifications | Unit Testing library

This is a documented exception to the normal rules that *specifically applies to try-except statements, from the language reference:

When an exception has been assigned using as target, it is cleared at the end of the except clause. This is as if:

What is happening:

The function itemToForm() is being called before the this.item is ready.

There are many strategies to avoid this error. A very simple one is to add a catcher at the beginning of the function, like this:

Welcome @Backup Gov18,

This is a documented issue.

Note: Only one active BarCodeScanner preview is supported currently. When using navigation, the best practice is to unmount any previously rendered BarCodeScanner component so the following screens can use without issues.

There is a workaround.

Instead of conditionally rendering the component, you could render it inside another dedicated screen component.

This way, after this new screen reads the barcode, you could navigate back to your first screen. Navigating back may unmount this new screen. You can force unmount if you need to.

As you are using react-navigation, you had better use .pop() instead of goBack().

You can also use expo-camera instead of expo-barcode-scanner. expo-camera does not have this issue. It also offers more options like flashlight/torch and switching cameras.

Your setuptools version is likely to be yanked:

https://pypi.org/project/setuptools/60.3.0/

Not sure how to fix that without a working pip though.

In every specification version you can define a header like one of the possible parameter locations.

So, one possible solution, will be to define the header in the methods you required in the request parameters sections:

Regarding your link, the compiler will tell you what's wrong with your call:

error: no matching function for call to 'Foo::Foo(int)'

So, the problem is that you try to call a non-existing constructor. Your class Foo has the default constructor Foo() only.

Just change return Foo(0).value; to return Foo().value; and it would work. Otherwise you would need a constructor like Foo(T) {}.

So what is the syntax to pass Requires-External to setuptools/distutils?

There is none by default, as neither distutils nor setuptools support the field. Also, requires_external keyword arg is not supported as well - it is silently ignored, just as any other unknown keyword arg.

To add local support for requires_external kwarg, you need to provide your own distribution implementation. Minimal example (requires Python 3.9):

'a' has integral type and sizeof('a') gives the size of the int.

It looks like strictly speaking, this doesn't conform with the grammar as specified. But at least, it does make sense for a compiler to allow it: the reason PrimaryNoNewArray is used instead of Primary here is so that an expression like new int[1][0] cannot be ambiguously parsed as either a 2D array or as an array access like (new int[1])[0]. If the array has an initializer like new int[]{0}[0] then the syntax is not ambiguous because this cannot be parsed as creating a 2D array.

That said, since the JLS doesn't specify that it's allowed, it could be treated as either an implementation detail or a bug in the compiler which allows it.