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ENH: add swallow assignment to nullObject

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- similar to the behaviour of std::ignore and consistent with the
  no input / no output nature of nullObject. Similarly accept a
  const reference for its Istream operator.

- make most nullObject methods constexpr
This commit is contained in:
Mark Olesen
2020-05-29 12:49:48 +02:00
parent e3367dbdc1
commit 1d2391e0b4
2 changed files with 28 additions and 13 deletions
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13
applications/test/nullObject/Test-nullObject.C
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@ -6,7 +6,7 @@
\\/ M anipulation |
-------------------------------------------------------------------------------
Copyright (C) 2014 OpenFOAM Foundation
Copyright (C) 2019 OpenCFD Ltd.
Copyright (C) 2019-2020 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
@ -47,9 +47,8 @@ class SimpleClass
{
public:
//- Null constructor
SimpleClass()
{}
//- Default construct
SimpleClass() {}
};
@ -149,6 +148,12 @@ int main()
printInfo(pointField::null());
}
// Test swallow assigment (like std::ignore)
// Looks pretty ugly though!
NullObject::nullObject = "hello world";
NullObject::nullObject = labelList({1, 2, 3});
Info<< nl;
return 0;