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QUESTION
I have a function called:
...ANSWER
Answered 2022-Mar-19 at 18:11I'm not familiar with the idioms for that package, but I'd be tempted to use castOptic equality
to turn the identity Iso
into a Prism
. That seems to get the idea across pretty well. However, I would expect that in most contexts you wouldn't actually need to convert it to a Prism
; you can presumably use polymorphic functions (like preview
and review
) that will accept an Iso
as well as a Prism
.
In your case, I suspect the right approach would be to write something like
QUESTION
I'm unable to automatically derive instances using DerivingVia
on any type that uses types from optics-core
like Prism'
; the error I get from compiler is:
ANSWER
Answered 2022-Mar-15 at 23:46Generally speaking, profunctor optics (such as those used in the lens
and optics
packages) aren't directly coercible. Roughly speaking, the internal representation of a prism is something like:
QUESTION
A type Prism' s a = Prism s s a a
(hackage) can be thought of as a relation between some structure s
and its member a
, such that you can always produce the structure from the member (a -> s
), but can only optionally retrieve the member from the structure (s -> Maybe a
).
This model is helpful in relating a sum type to one of its constructors ... as well as (more relevant here) in route encoding and decoding. If s
is the encoded route URL, and a
is the route type, then we have a -> s
representing the encoding function (always succeeds), and s -> Maybe a
representing the decoding function (can fail).
Now, on to these pairs of functions, I want to add a "context" argument that is to be used in the encoding and decoding process (imagine that the decoding process needs to "look up" some database before successfully producing a relevant route). Basically:
...ANSWER
Answered 2022-Mar-15 at 15:18I'm with @HTNW. You should just be able to define:
QUESTION
I want to know which way is better to model TDE with MarkLogic.
We have XML documents with many different DateTime fields. Most of the time (99.99%), the timestamp part is of no biz use. I guess the remaining 0.01% use case is for data problem investigation like when this happened.
TDE is neat and easy to expose document data to external BI tools via ODBC. All the columnar-type of modem BI tools (Power BI) prefer separating the Date and Timestamp fields from one single Datetime field. That will improve the BI tool performance significantly.
There are two options to do that.
Create two different fields in TDE from the same field. See the below screenshot. Most of the time, use Date type TDE field only.
Create only one DateTime field in TDE and use type casting in OPTICS API or SQL (ML version of favour)
Which way is better?
...ANSWER
Answered 2022-Feb-21 at 21:55I would say model the data as you plan to use it. In your case, adding the extra TDE field. A few points:
It should compress well.. Only one unique value per day per forest.
MarkLogic is a clustered database. Queries are resolved per forest, then Per node and then on the evaluator node. You should always be careful about filter, sort, join on any dynamic value since sometimes to resolve the items, more data has to be pushed to the evaluator node. Storing the data as you plan to use it helps minimize the risk of suboptimal queries in general, but even more so on a clustered database.
QUESTION
here is a puzzle that I keep on bumping into and that, I believe, no previous SO question has been addressing: How can I best use the lens
library to set or get values within a State
monad managing a nested data structure that involves Map
s when I know for a fact that certain keys are present in the maps involved?
ANSWER
Answered 2022-Feb-09 at 11:43If you are sure that the key is present then you can use fromJust
to turn the Maybe User
into a User
:
QUESTION
I have some trouble with this terraform file I wrote to define a Firebase application in my org account:
...ANSWER
Answered 2022-Jan-31 at 09:01If the roles that you listed are the only ones that your account has - you lack roles that allow you to access Cloud Storage. Command you used to check the roles doesn't give you correct information.
Correct solution (described in this answer) would be to run this :
QUESTION
how to count or estimate numbers of results when using marklogic optic api.
...ANSWER
Answered 2022-Jan-19 at 19:34Note: the relationship between documents and results depends on how you created your TDE template. Some templates may actually create many rows from a single document. I am going to assume that your title related to documents should read "result" instead of documents since you reference "results" in the actual question.
For what you are trying to do, I would use op.groupBy()
Free standing example:
QUESTION
I'm trying to join two views "A" and "B" using the op:join-left-outer
function.
I have two "ON-conditions" for the JOIN:
- The first one is a simple
op:on
function. (And not a part of my problem) - The second one should be an ON-condition joining a column by value (
$myValue
). Butop:on
does not support values, only column-references. So the following code doesn't work:
ANSWER
Answered 2022-Jan-13 at 14:48Interestingly enough, when trying to use a second op:on()
with column references on left and right (by binding 42 as a new column on aView), I also did not get expected results.
However, the Optic API does seem to allow you to do what you want if expressed in a different way:
- The op:join-left-outer() documentation shows a fourth parameter - condition.
- op:eq() allows for a mix of column references and constants.
Therefore, I would expect that you can remove your second op:on()
and use the following as the 4th param: op:eq(op:view-col("B", "SOME_OTHER_COLUMN"), $myValue)
A free-standing sample is below -where the resulting second row has null values for the outer joined table
QUESTION
I am using Microsoft Computer Vision API for OCR processing and I noticed that they are getting charged as S3 transactions instead of S2 in my bill.
I'm using the .NET SDK and the API I am using is this one. https://docs.microsoft.com/en-us/dotnet/api/microsoft.azure.cognitiveservices.vision.computervision.computervisionclientextensions.readasync?view=azure-dotnet
I have also confirmed that the actual REST API the SDK calls is the following POST /vision/v3.2/read/analyze https://centraluseuap.dev.cognitive.microsoft.com/docs/services/computer-vision-v3-2/operations/5d986960601faab4bf452005
According to documentation, that should be the OCR Read API, am I correct? https://docs.microsoft.com/en-us/azure/cognitive-services/computer-vision/vision-api-how-to-topics/call-read-api
I am puzzled as to why my calls are getting charged as S3 instead of S2. This is important for me because S3 is 50% more expensive than S2. Using the Pricing Calculator, 1000 S2 transactions is $1, whereas 1000 S3 transactions is $1.5. https://azure.microsoft.com/en-us/pricing/calculator/?service=cognitive-services
What's the difference between OCR and "Describe and Recognize Text" anyways? OCR (Optical Character Recognition) by definition must recognize text. I am calling the Read API without any of the optional parameters so I did not ask for "Describe" hence the call should be S2 feature rather than S3 feature I think.
I already posted this question at Microsoft Q&A but I thought SO might get more traffic hence help me get an answer faster. https://docs.microsoft.com/en-us/answers/questions/689767/computer-vision-api-charged-as-s3-transaction-inst.html
...ANSWER
Answered 2022-Jan-12 at 14:19To help you understand, you need a bit of history of those services. Computer Vision API (and all "calling" SDKs, whether C#/.Net, Java, Python etc using these APIs) have moved frequently and it is sometimes hard to understand which SDK calls which version of the APIs.
API operations historyRegarding optical character reading operations, there have been several operations:
Computer Vision 1.0See definition here was containing:
OCR
operation, a synchronous operation to recognize printed textRecognize Handwritten Text
operation, an asynchronous operation for handwritten text (with "Get Handwritten Text Operation Result" operation to collect the result once completed)
See definition here. OCR was still there, but "Recognize Handwritten Text" was changed. So there were:
OCR
operation, a synchronous operation to recognize printed textRecognize Text
operation, asynchronous (+ Get Recognize Text Operation Result to collect the result), accepting both printed or handwritten text (seemode
input parameter)Batch Read File
operation, asynchronous (+ "Get Read Operation Result" to collect the result), which was also processing PDF files whereas the other one were only accepting images. It was intended "for text-heavy documents"
Computer Vision 2.1 was similar in terms of operations.
Computer Vision 3.0See definition here.
Main changes: Recognize Text
and Batch Read File
were "unified" into a Read
operation, with models improvements. No more need to specify handwritten / printed for example (see link).
QUESTION
When I tried build Unity project for Android, it reported "Gradle build failed". I tried using VPN and using another repository(based in China where the Gradle connection is not working well), but still the same errors.
I checked the log(see following), one line says it tries to "Connect to 192.168.1.4:1125 [/192.168.1.4]", which seems suspicious. My building PC is 192.168.1.2, and it's connected directly to a fiber optic modem, which is 192.168.1.1. The 192.168.1.4 is another wifi modem connected to the fiber optic modem, and it should has nothing to do with my PC's internet connection.
Why does Unity try connecting a device that's not related when building Gradle? Any suggestions on how to solve this building failure? Thank you!
...ANSWER
Answered 2022-Jan-12 at 04:34I've solved it. Find the "gradle.properties" file at "C:\Users\xxx\.gradle", comment out the systemProp.xxxx like this:
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