modl | golang database
kandi X-RAY | modl Summary
kandi X-RAY | modl Summary
Modl is a library which provides database modelling and mapping. It is a fork of James Cooper's wonderful gorp. Note. Modl's public facing interface is considered unfinished and open to change. The current API will not be broken lightly, but additions are likely. As Gorp's behavior moves on, Modl may adopt some of it or may not.
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QUESTION
ANSWER
Answered 2021-Jun-02 at 10:58You are not initialising your second class, you are not initialising your 'product' variable to access the list in your model class. It is indeed set to null. To fix this, first create an instance of the model class 'Products' and then using that instance variable, access the list in the class. Assign that list to a variable and use that in your UI. Also, it is recommended that you declare your variables outside the 'build' method because the build methods runs every time the UI needs to be refreshed, which could potentially reset your values. This may not be the desired behaviour, but that depends on the application.
To access the list inside your class, you first need to create an instance of that class like this:
QUESTION
I am new at machine learning , I found python code to visulastion the result of SVM modle from sklearn in python the code is
...ANSWER
Answered 2021-May-30 at 10:49.scatter()
funciton takes float or array-like of x
and y
coordinates. As these are coordinates they are supposed to be in pairs and therefore x
and y
should be of equal length.
In your code x
is clf.support_vectors_[:0]
and y
is clf.support_vectors_[:1]
. The syntax iterator[:k]
says that we should pick every element in the iterator until the k-th element which we should not pick.
So when we combine these things together we can spot that x
and y
have different lengths and therefore throw an error.
QUESTION
I'm trying to count total of work hour and add up is_overtime
number but I don't know how to do it.
My code so far:
Modles:
...ANSWER
Answered 2021-May-26 at 07:52his is probably more of an sqlalchemy question than a FastAPI question, but something like:
QUESTION
This Meteor code uses Meteor Blaze template helper that supplies some html elements with data from mongo collection.
The collection.findOne
has Session.get
as the selector so that when there is no value for the Session key then I get an empty object to the template so that I get no data i.e. blank element. But I still get values in some elements. mainly the editable div
and span
and one input
elements as commented in the html file.
Where did I go wrong?
I am trying to clean the "form" when I fire an event by setting the Session.set('plate', '')
i.e. blank value for the session key 'plate', empty object, no data for the Blaze template, clears the elements, right?
Thank you
ANSWER
Answered 2021-May-08 at 18:03Well, no, an empty regex matches everything. This is easy to test if you open a mongo shell and run a query like that against any collection with content:
QUESTION
This Meteor client code which uses regex to match words in a sentence, it matches fine but only on index 0 and even number index. why is it not matching on every index number? Thanks
...ANSWER
Answered 2021-May-07 at 22:04it happens because you use * operator instead of + difference between them is:
* - 0 or more of the preceding expression
+ - 1 or more of the preceding expression
so in your case * operator takes this empty space as "0 or more" and thinks, that it is a separate element, expression, that you probably want is:
QUESTION
Assume I have a multilevel structure of data. With a global distribution, from which I draw a highlevel distribution from which i draw a lowlevel distribution from which I draw my response variable. How would I implement such a thing in a stan model.
Below is a minimal example which I hope illustrates the problem. In the stan code there is
- one commented "model" section which is working, but ignores the mutlilevel aspect and treats every lower level equal, irrespective of the highlevel origin and provides therefor not shrinkage by the highlevel order (see pic).
- A "model"section with a forloop, which I though would do what I want, but takes forever to finish, and with a lot of warnings (Rhat, treedepth, Bayesion Fraction, low ESS)
I am quite inexperienced with modeling and all tutorials on ML-Modeling do not have the Loop-Approach I though would make sense here, so I suspect I am completely heading in the wrong direction with that. So any help will be highly appreciated.
R-Code to generate and run the model
...ANSWER
Answered 2021-May-06 at 09:24found the mistake: I needed to map the lowlevel values to the highlevel ones, with a look up table. Below is now a working version, which also just takes a second to finish.
QUESTION
This Meteor code does not print to console the event.which
so as to use tab key event when tabbing out of an editable div.
Why editable div? Because I can style part of the string which is not allowed in input element.
BTW: Where do I find a list of the events types for Meteor Blaze. There site only lists a very limited events. Other DOM events are available as well, but...
I tried some blur and onblur for no avail. How can I fire a tab key event on an editable div? Thanks
...ANSWER
Answered 2021-May-06 at 00:50It works for me!
Here is a minimal, reproducible example:
main.html:
QUESTION
I'm serializing a query set to json format using natural_keys. Reference: docs
I'm able to serialize data successfully. In case, there are any foreign keys, then I'm also able to add it's object instead of foreign key. For example:
...ANSWER
Answered 2021-May-02 at 15:50When I had a similar issue for me something like that worked:
QUESTION
I am creating an android project. for input validation, I created a different class and created a constructer also but I have a problem. I don't know how to get the context of that class in which I am calling that constructer.
...accountmanagement class
ANSWER
Answered 2021-Apr-22 at 13:48do this:-
accountmanagement(String name, String email, String password, Context
QUESTION
A div and its children inputs need to have width:100%
when screen is less than 600px wide. Why the code below fails to do that?
I need to have the dives side by side when screen is above 600px and below each other 100% width on smaller screen. And thus their input contents.
Thanks
...ANSWER
Answered 2021-Apr-18 at 18:48You need to increase your media query selector accuracy, something like div#contact, div#vehicle { width: 100%; }
instead of just div
. The media query css works just fine, but gets overwritten by the more accurate one above (selecting by an element ID is more accurate than selecting by element types).
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