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Implicit conversions for put/get #5056

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@gf712 gf712 commented Jun 4, 2020

Implicit conversions as discussed in #5045. Would have to add all the primitive types, and probably come up with some better abstraction. This does the same as the Any::CastingRegistry, but by putting all this logic in SGObject we can add some very specific edge cases, like std::variant. I think this separates Any as a "type safe" type erasure abstraction from the parameters that use it.

EXPECT_THROW(obj->get<float64_t>(MockObject::kInt), ShogunException);
EXPECT_THROW(obj->get(Tag<float64_t>(MockObject::kInt)), ShogunException);
EXPECT_EQ(obj->get<float64_t>(MockObject::kInt), 10.0);
EXPECT_EQ(obj->get(Tag<float64_t>(MockObject::kInt)), 10.0);
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@karlnapf so this won't throw anymore

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yep.
But everything that looses information throws?
maybe a test for some examples?

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by lose information you mean something like 1.3 becomes 1? Right now I think this function only supports checks for overflow, e.g. int -10 is converted to unsigned int.

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Yes, we wouldnt want that to happen for now I think.

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@vigsterkr would it make sense to extend safe_convert to check floating point casting to integers and see if the delta is larger than fepsilon?

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I always thought that the safe_convert functions would be for overflow checks, not for loss of information when going from discrete to floating?

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(on the other hand, why not :) )

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stale bot commented Dec 9, 2020

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

@stale stale bot added the stale label Dec 9, 2020
@gf712 gf712 added Tag: Cleanup and removed stale labels Dec 10, 2020
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