circus | An exchange simulator
kandi X-RAY | circus Summary
kandi X-RAY | circus Summary
An exchange simulator.
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QUESTION
I am getting this error when I run npm run in a react app:
...ANSWER
Answered 2021-May-24 at 16:00Check out this answer React Native Jest SyntaxError: Duplicate __self prop found
Also refer: https://reactjs.org/blog/2020/09/22/introducing-the-new-jsx-transform.html
Update @babel/core and @babel/plugin-transform-react-jsx
QUESTION
Is there any mistake in that Cpp-code, which can lead unfavorable output ? Actually while submitting its solution...I got 6 wrong test cases, but I am not able to find any error!
I'm providing question(commented) for reference,
...ANSWER
Answered 2021-May-11 at 05:29Initial remark: You want to check if there exists an integer n with
x1 + n * v1 = x2 + n * v2
In other words:
x1 - x2 = n(v2 - v1)
Now if v1 != v2
and (x1 - x2) / (v2 - v1)
is an integer (or (x1 - x2) % (v2 - v1) == 0
), the answer is YES.
If v1 == v2
and x1 == x2
, the answer is also YES
In all other cases, the answer is NO.
Trying to calculate this using a loop isn't exactly an optimal approach.
Now to your code. And I must admit I didn't spot the mistake yet, but I have a few comments on it.
You terminate your loop as soon as either x1 == x2 or min <= max. We'll have to think about the meaning of the variables here.
x1 is the position of kangaroo1
x2 is the position of kangaroo2
Obviously, if both are equal, you have a "hit" (answer is YES).
min is the position of the slower kangaroo
max is the position of the faster kangaroo
As a hint, it would be a good idea to choose names that reflect this meaning. min and max aren't that well chosen. The double bookkeeping doesn't make it easier to understand what's going on (you keep the same position in two variables), and the comparison to check which velocity is which doesn't add to clarity.
Let me rewrite your algorithm a little
QUESTION
It seems that initializing an instance of the PouchDB client (calling new PouchDB(...)
) causes some queue worker or background process to spawn that periodically sends a network request to its CouchDB server and in doing so prevents our Detox test suite from letting our React Native app + iOS simulator go idle and move on to the next assertion, causing our tests to fail with either App has not responded to the network requests below
or DetoxRuntimeError: Test Failed: No elements found for “MATCHER(identifier == “foo”)”
.
We've tried calling device.disableSynchronization
/device.enableSyncronization
or setting the blacklist with either launchArgs: { detoxURLBlacklistRegex: '.*' }
or device.setURLBlacklist(['.*'])
but none of it seems to make it work.
Is there any way to get Detox to ignore the PouchDB network requests, or perhaps to manually pause PouchDB, so that we can reach the next assertions we want to make?
OverviewMy team's trying to use Detox to write a login test for an iOS app running in the simulator built with React Native. The app uses PouchDB for its networking/data layer so it can connect to a remote CouchDB server.
The problem is that Detox always seems to fail / freeze / hang and timeout past a certain point, which is basically whenever PouchDB gets initialized (by calling new PouchDB(...)
).
In our test, this happens as a side effect of tapping the login button with valid credentials:
...ANSWER
Answered 2021-Apr-08 at 21:34Is there any way to get Detox to ignore the PouchDB network requests, or perhaps to manually pause PouchDB, so that we can reach the next assertions we want to make?
Author here, I was able to manually pause PouchDB's live synchronization by toggling this configuration value to false whenever we're in the test env. Source: PouchDB docs on sync.
QUESTION
I am trying to create my own array within a class, with functions to insert into it, delete etc.. My array has capacity
- max array's size, size
- how many elements it holds, *data
- a pointer to data. So when the user tries to insert an element and the array is full, the capacity
would double in my resize()
function, i would create a temporary array newData[capacity]
copy everything there, then delete my original data
to get rid of that memory and then assign newData
to data
. Now I don't know if that is a stupid solution, but it works the first time, but when I resize the second time I am getting strange numbers. For the tests I put the starting capacity
to 2. This is myArray.cpp file:
ANSWER
Answered 2021-Mar-24 at 19:42In resize
, the delete[] newData;
statement deletes the memory you just allocated, leaving data
as a dangling pointer because it now points at memory that has been deallocated.
The solution is to remove the delete[] newData;
statement from resize
.
You should also add code to the destructor to free up the memory you've allocated.
QUESTION
I have read through many questions and tried to solve the following problem with Java generics and @MappedSuperclass
. Important for me is that I have to have different tables as you would get with TABLE_PER_CLASS
.
This is the goalI want to achieve in Spring-Boot:
I am stuck because examples like these are not representing my more complex goal from the image above.
The different inheriting classes (ZooAnimal
, CircusAnimal
) have attributes that must not be null AND must not be used in the respective opposite class.
E.g. an object of ZooAnimal may have
...ANSWER
Answered 2021-Mar-16 at 18:59Yes it's possible to implement these classes using TABLE_PER_CLASS
strategy with generics, but you have to use @Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
annotation instead of @MappedSuperClass
.
To know more about TABLE_PER_CLASS
strategy visit jpa advanced mappings
To prepare your abstract classes using generics all you have to do is understand the relation between classes before using generics. After that you have to understand recursive generics
concept to implement your case using generics.
For more information's visit introduction to generics
Here is the implementation of classes:-
Institution class
QUESTION
On default jest
allows you to simply access jasmine
globally. But as soon as you switch the testRunner
to jest-circus
, jasmine
is undefined. Following is a minimal, reproducible example:
babel.config.js
...ANSWER
Answered 2021-Feb-06 at 04:05You can’t access jasmine when you use jest-circus. This is by design. jest-circus is a new test runner that was built from scratch. It mimics jasmine functionality for defining tests (i.e., describe
, it
, everything except expect
assertions and spies).
If you depend on jasmine, then npm install -D jest-jasmine2
and use it in your jest config:
QUESTION
I have a problem about implementing recommendation system by using Euclidean Distance.
What I want to do is to list some close games with respect to search criteria by game title and genre.
Here is my project link : Link
After calling function, it throws an error shown below. How can I fix it?
Here is the error
...ANSWER
Answered 2021-Jan-03 at 16:00The issue is that you are using euclidean distance for comparing strings. Consider using Levenshtein distance, or something similar, which is designed for strings. NLTK has a function called edit distance that can do this or you can implement it on your own.
QUESTION
I'm currently trying to solve a little problem.
I have the following code. I try to filter and re-render the fetched movielist based on the chosen genre.
So far i am able to cast the selected option to an object in my js-script but i don't know where to go from here. The genre values in my observable array is an array of its own since one movie can have multiple genres.
Here's my script so far:
...ANSWER
Answered 2020-Dec-12 at 01:27You could add a computed observable filteredMoviesList
which would go through each of the filters you describe and filter for the selected genre. Then in your html you would just bind your foreach binding to that instead of moviesList
. Here is a simple example:
JS
QUESTION
I'm using the Online Retail dataset from the UCI Machine Learning Repository in pandas, and I'm setting a multi-index consisting in CustomerID
as first level, and InvoiceNo
as second level. Here's the code:
ANSWER
Answered 2020-Dec-06 at 17:40Feel like there's something a little shorter, but seems to work. Pull out the invoice numbers, groupby
the customer ID, pick first invoice in each group:
QUESTION
I face issues with react-native-reanimated:
...ANSWER
Answered 2020-Nov-15 at 09:01Ok, I figured it out by comparing a fresh react native app with only react-native-reanimated installed and my original project.
As expected the issue was with the babel configuration, especially the wildcard plugin. I couldn't exactly figure out the reason, but applying the plugin to the whole project caused some side effects, i.e. import * as abc from './somelocation
in my node_modules not being treated correctly.
As I need the wildcard plugin only to be applied to a specific folder ./src/i18n/*
I changed my babel.config.js
as follows:
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