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P0157 discusses various methods for handling "disappointment" (aka:
errors). However, I was wondering about a particular condition that it
refers to, which is something that I have had no experience with: "Advisory
information." This is apparently a return value that represents how you may
want to use the API/service/etc in the future. A hash table getting too
full or concurrent APIs being "under contention" were explicit examples.

Does anyone have any experience with an API that provides such advise as *return
values* from functions? I know of APIs that can provide such information
upon request, what I would call "out-of-band" reporting. But I have not had
any experience with APIs that actually offer advice as part of a function's
API.

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<div dir=3D"ltr">P0157 discusses various methods for handling &quot;disappo=
intment&quot; (aka: errors). However, I was wondering about a particular co=
ndition that it refers to, which is something that I have had no experience=
 with: &quot;Advisory information.&quot; This is apparently a return value =
that represents how you may want to use the API/service/etc in the future. =
A hash table getting too full or concurrent APIs being &quot;under contenti=
on&quot; were explicit examples.<br><br>Does anyone have any experience wit=
h an API that provides such advise as <i>return values</i> from functions? =
I know of APIs that can provide such information upon request, what I would=
 call &quot;out-of-band&quot; reporting. But I have not had any experience =
with APIs that actually offer advice as part of a function&#39;s API.<br></=
div>

<p></p>

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