#subtyping — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #subtyping, aggregated by home.social.
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Can I get some help with the Amber rules (Amadio & Cardelli '93) for #subtyping?
I haven't seen mentions that it's possible to derive `μx.x <: t <: μx.x` *for every `t`*.
Here's my proof of the 1st (the 2nd is the same):
```
μx.x <: t ⊢ μx.x <: t
--------------------------
μx.x <: t ⊢ x [μx.x/x] <: t
------------------------------
⬝ ⊢ μx.x <: t
```What's wrong?
The Amber rules do induction afaik, is the problem that `x` is not under a `+` or `→`?
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Can I get some help with the Amber rules (Amadio & Cardelli '93) for #subtyping?
I haven't seen mentions that it's possible to derive `μx.x <: t <: μx.x` *for every `t`*.
Here's my proof of the 1st (the 2nd is the same):
```
μx.x <: t ⊢ μx.x <: t
--------------------------
μx.x <: t ⊢ x [μx.x/x] <: t
------------------------------
⬝ ⊢ μx.x <: t
```What's wrong?
The Amber rules do induction afaik, is the problem that `x` is not under a `+` or `→`?
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Can I get some help with the Amber rules (Amadio & Cardelli '93) for #subtyping?
I haven't seen mentions that it's possible to derive `μx.x <: t <: μx.x` *for every `t`*.
Here's my proof of the 1st (the 2nd is the same):
```
μx.x <: t ⊢ μx.x <: t
--------------------------
μx.x <: t ⊢ x [μx.x/x] <: t
------------------------------
⬝ ⊢ μx.x <: t
```What's wrong?
The Amber rules do induction afaik, is the problem that `x` is not under a `+` or `→`?
-
Can I get some help with the Amber rules (Amadio & Cardelli '93) for #subtyping?
I haven't seen mentions that it's possible to derive `μx.x <: t <: μx.x` *for every `t`*.
Here's my proof of the 1st (the 2nd is the same):
```
μx.x <: t ⊢ μx.x <: t
--------------------------
μx.x <: t ⊢ x [μx.x/x] <: t
------------------------------
⬝ ⊢ μx.x <: t
```What's wrong?
The Amber rules do induction afaik, is the problem that `x` is not under a `+` or `→`?
-
Can I get some help with the Amber rules (Amadio & Cardelli '93) for #subtyping?
I haven't seen mentions that it's possible to derive `μx.x <: t <: μx.x` *for every `t`*.
Here's my proof of the 1st (the 2nd is the same):
```
μx.x <: t ⊢ μx.x <: t
--------------------------
μx.x <: t ⊢ x [μx.x/x] <: t
------------------------------
⬝ ⊢ μx.x <: t
```What's wrong?
The Amber rules do induction afaik, is the problem that `x` is not under a `+` or `→`?
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#Guidance to Commercial #Laboratories on Increasing #Submission of #Influenza A and B Positive Samples to State and Local Public Health Laboratories for Additional #Subtyping (including #H5), #US #CDC: https://www.cdc.gov/flu/avianflu/guidance-commercial-laboratories.htm
Commercial laboratories are encouraged to communicate with the PHL of the patient’s state of residence prior to submitting specimens to obtain the appropriate specimen submission form and any additional submission instructions.
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#Guidance to Commercial #Laboratories on Increasing #Submission of #Influenza A and B Positive Samples to State and Local Public Health Laboratories for Additional #Subtyping (including #H5), #US #CDC: https://www.cdc.gov/flu/avianflu/guidance-commercial-laboratories.htm
Commercial laboratories are encouraged to communicate with the PHL of the patient’s state of residence prior to submitting specimens to obtain the appropriate specimen submission form and any additional submission instructions.
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#Guidance to Commercial #Laboratories on Increasing #Submission of #Influenza A and B Positive Samples to State and Local Public Health Laboratories for Additional #Subtyping (including #H5), #US #CDC: https://www.cdc.gov/flu/avianflu/guidance-commercial-laboratories.htm
Commercial laboratories are encouraged to communicate with the PHL of the patient’s state of residence prior to submitting specimens to obtain the appropriate specimen submission form and any additional submission instructions.
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#Guidance to Commercial #Laboratories on Increasing #Submission of #Influenza A and B Positive Samples to State and Local Public Health Laboratories for Additional #Subtyping (including #H5), #US #CDC: https://www.cdc.gov/flu/avianflu/guidance-commercial-laboratories.htm
Commercial laboratories are encouraged to communicate with the PHL of the patient’s state of residence prior to submitting specimens to obtain the appropriate specimen submission form and any additional submission instructions.
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#Guidance to Commercial #Laboratories on Increasing #Submission of #Influenza A and B Positive Samples to State and Local Public Health Laboratories for Additional #Subtyping (including #H5), #US #CDC: https://www.cdc.gov/flu/avianflu/guidance-commercial-laboratories.htm
Commercial laboratories are encouraged to communicate with the PHL of the patient’s state of residence prior to submitting specimens to obtain the appropriate specimen submission form and any additional submission instructions.
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The things that come to mind when hearing these three letters are cars, inheritance, getters, setters, and ObjectFactoryFactorySingleton.
https://blog.sigma-star.io/2024/01/people-dont-understand-oop/
