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QUESTION
I was recently reading Category Theory for Programmers and in one of the challenges, Bartosz proposed to write a function called memoize which takes a function as an argument and returns the same one with the difference that, the first time this new function is called, it stores the result of the argument and then returns this result each time it is called again.
...ANSWER
Answered 2022-Mar-20 at 09:37Let's try(Note: I have change the return type of memoize to store the cached data):
QUESTION
I am building an RPA process to integrate with Google AI Document and one of the challenges I've encountered is getting the access token and using it during the API call. Most of the time I'm just using powershell by running gcloud auth application-default print-access-token script in order to get the token.
Is there any other way that I can do in order to get that token perhaps by authorizing through an API call or anything?
...ANSWER
Answered 2022-Feb-18 at 16:32Use gcloud auth application-default print-access-token --log-http
to view the API call that perform the GCLOUD sdk and get inspiration from them.
The content that you will see is sensitive and the logs are deactivated by default. To view them perform a gcloud config set log_http_redact_token false
to view unredacted logs.
QUESTION
Yesterday I updated my Mac with Android Studio Bumblebee 2021.1.1 hoping that it would solve multiplatform issues I encounter.
Below some screenshots about my Mac and versions to be 100% clear:
macOs Monterey 12.2 iMac details
Kotlin Multiplaform Mobile version
When I create a new KMM Application project I get errors. These are the steps (I can't post all screenshots): Basically accepting all default settings and followed by the final step:
After clicking finish on the New Project dialog Android Studio instantly shows an error in the bottom right corner: "Project wasn't configured" Project wasn't configure error
After that I see these errors (text is below): Android Studio build window output
...ANSWER
Answered 2022-Feb-03 at 08:46There is an Android Studio bug report for this, including a workaround: https://issuetracker.google.com/issues/216364005#comment7
The root cause appear to be missing executable flag on Contents/bin/printenv file.
The workaround is to add missing flag:
chmod +x /Applications/Android\ Studio.app/Contents/bin/printenv
QUESTION
I have worked my way around many challenges with MySQL, and i think right now i am able to build everything that i need, to get something to work. But now, for a pretty huge SQL statement that returns a lot of data, i need to work on MySQL performance for the first time.
I was hoping someone here could help me find out why the following statement is so incredibly slow. It takes over 3 minutes to collect 740 results out of different tables. The biggest table beeing the "reports" table, consisting of somewhere over 20.000 entries at the moment.
I can also educate myself if someone could just point me in the right direction. I don't even know where to search for answers for my current problem.
Okay, so here is the statement that i am talking about. Maybe, if someone has enough experience with SQL performance, something just right away jumps at them. I would be happy for any kind of feedback. I'll elaborate on the statement right after the code itself:
...ANSWER
Answered 2022-Jan-13 at 01:03Let's start by adding an index for each of the foreign keys used in your query -
QUESTION
I'm trying this: https://github.com/type-challenges/type-challenges/blob/master/questions/4-easy-pick/README.md
I can't understand the difference between them:
...ANSWER
Answered 2022-Jan-11 at 09:08First MyPick
:
QUESTION
I use boost::spirit to parse (a part) of a monomial like x, y, xy, x^2, x^3yz. I want to save the variables of the monomial into a map, which also stores the corresponding exponent. Therefore the grammar should also save the implicit exponent of 1 (so x stores as if it was written as x^1).
...ANSWER
Answered 2022-Jan-10 at 13:19I think I solved the original problem myself. The second try works.
Indeed. It's how I'd do this (always match the AST with your parser expressions).
However, I don't see how I doubled the variable name.
It's due to backtracking with container attributes. They don't get rolled back. So the first branch parses potVar
into a string, and then the parser backtracks into the second branch, which parses potVar
into the same string.
- boost::spirit::qi duplicate parsing on the output
- Understanding Boost.spirit's string parser
- Parsing with Boost::Spirit (V2.4) into container
- Boost Spirit optional parser and backtracking
- boost::spirit alternative parsers return duplicates
It can also crop up with semantic actions:
In short:
match your AST structure in your rule expression, or use
qi::hold
to force the issue (at performance cost)avoid semantic actions (Boost Spirit: "Semantic actions are evil"?)
For inspiration, here's a simplified take using Spirit X3
QUESTION
My App.js
looks so ugly with a lot of routes and show/hide Navbar
component in some pages. What is a best practice to centralized routes and somehow refactor this show/hide Navbar
? Any suggestions? I did some research, but can not determine which way is better.
ANSWER
Answered 2021-Dec-22 at 19:33You can make an array and put all the required fields in it.
QUESTION
This was part of another question (Reading URLs from .csv and appending scrape results below previous with Python, BeautifulSoup, Pandas ) which was generously answered by @HedgeHog and contributed to by @QHarr. Now posting this part as a separate question.
In the code below, I'm pasting 3 example source URLs into the code and it works. But I have a long list of URLs (1000+) to scrape and they are stored in a single first column of a .csv file (let's call it 'urls.csv'). I would prefer to read directly from that file.
I think I know the basic structure of 'with open' (e.g. the way @bguest answered it below), but I'm having problems how to link that to the rest of the code, so that the rest continues to work. How can I replace the list of URLs with iterative reading of .csv, so that I'm passing the URLs correctly into the code?
...ANSWER
Answered 2021-Nov-27 at 22:45Since you're using pandas, read_csv
will do the trick for you: https://pandas.pydata.org/docs/reference/api/pandas.read_csv.html
If you want to write it on your own, you could use the built in csv library
QUESTION
I got this code to almost work, despite much ignorance. Please help on the home run!
- Problem 1: INPUT:
I have a long list of URLs (1000+) to read from and they are in a single column in .csv. I would prefer to read from that file than to paste them into code, like below.
- Problem 2: OUTPUT:
The source files actually have 3 drivers and 3 challenges each. In a separate python file, the below code finds, prints and saves all 3, but not when I'm using this dataframe below (see below - it only saves 2).
- Problem 3: OUTPUT:
I want the output (both files) to have URLs in column 0, and then drivers (or challenges) in the following columns. But what I've written here (probably the 'drop') makes them not only drop one row but also move across 2 columns.
At the end I'm showing both the inputs and the current & desired output. Sorry for the long question. I'll be very grateful for any help!
...ANSWER
Answered 2021-Nov-27 at 21:36Store your data in a list of dicts, create a data frame from it. Split the list of drivers
/ challenges
into single columns
and concat it to the final data frame.
QUESTION
Given a dynamically-loading table with a variable number of rows, how does one assert that the rows are correctly ordered by date?
This problem has two main challenges: (1) how does one compare dates within table rows using cypress; and (2) how does one handle dynamic loading in such a complex scenario?
So far, I have successfully managed to solve the first problem; however, I am unable to solve the second problem. My test works most of the time, but it will sometimes fail because the page hasn't finished loading before the assertions are hit. For example, the dates are out of order when the page is first loaded:
...ANSWER
Answered 2021-Nov-18 at 12:48You need to use a single cy.get(...).should(...)
callback where the callback grabs all date strings, converts into timestamps, then checks if the timestamps are sorted. Then Cypress retries the cy.get
command - until the table is sorted and the should
callback passes. Here is a sample code, see the full dynamic example at https://glebbahmutov.com/cypress-examples/recipes/sorted-list.html
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