CbmDefs.h: Use fwd declaration of std::ostream.

Replace the relatively heavy iostream with the lightweight alternative iosfwd that provides a forward declaration for std::ostream in CbmDefs.h.

Edit: Also see here, why it's useful to avoid including iostream when it's not needed.

added 1 commit

• dd8b591e - Add missing <ostream> include.

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added 1 commit

• 6cd4df35 - clang format.

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added 9 commits

• 6cd4df35...71ce845d - 5 commits from branch computing:master
• 19c76d61 - CbmDefs.h: Use fwd declaration of std::ostream.
• 8fce15ac - Add missing <ostream> include.
• 9bc0176f - clang format.
• ecd0c14c - Fix integer types.

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Dear @d.smith, @fweig, @a.bercuci, @p.kaehler, @c.pauly, @f.uhlig, @v.friese, @p.-a.loizeau, @ma.beyer,

you have been identified as code owner of at least one file which was changed with this merge request.

Please check the changes and approve them or request changes.

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added 8 commits

• ecd0c14c...9bb00372 - 4 commits from branch computing:master
• 4f5b8a90 - CbmDefs.h: Use fwd declaration of std::ostream.
• bf876ea4 - Add missing <ostream> include.
• 19c36328 - clang format.
• b93d0dac - Fix integer types.

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@f.uhlig, @p.-a.loizeau: could one of you review this?

@fweig,

looks reasonable from my side. Probably the same improvement can be done at several places in the code base.

approved this merge request

added 12 commits

• b93d0dac...384380a8 - 8 commits from branch computing:master
• 8f6e4573 - CbmDefs.h: Use fwd declaration of std::ostream.
• ae964756 - Add missing <ostream> include.
• 674febd7 - clang format.
• 2181a255 - Fix integer types.

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enabled an automatic merge when the pipeline for 2181a255 succeeds

merged

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