pc | python calculator purely aesthetic. probably pretty glitchy | Apps library
kandi X-RAY | pc Summary
kandi X-RAY | pc Summary
I made an interactive calculator for command line that formats the equation nicely. It's pretty much a frontend to the python interpreter for mathematical purposes. It was a pain to figure out and likely has some glitches that I'll need to resolve, but I'm happy that I finally made it after the struggle. The name is a pun on the CLI calculator bc and is pretty basic. I literally use python's eval to do the math because I don't want to deal with precedence rules for my parser that I noticed are pretty glitchy. Like I said, it uses eval making it pretty blatantly insecure and kinda dangerous and that's mostly why I added the license.
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QUESTION
In my iOS app "Progression" there is rarely a crash (1 crash in ~1000+ Sessions) I am currently not able to fix. The message is
Progression: protocol witness for TrainingSetSessionManager.update(object:weight:reps:) in conformance TrainingSetSessionDataManager + 40
This crash points me to the following method:
...ANSWER
Answered 2021-Jun-15 at 13:26While editing my initial question to add more context as Jay proposed I think it found the issue.
What probably happens? The view where the crash is, contains a table view. Each cell will be configured before being presented. I use a flag which holds the information, if the amount of weight for this cell (it is a strength workout app) has been initially set or is a change. When prepareForReuse is being called, this flag has not been reset. And that now means scrolling through the table view triggers a DB write for each reused cell, that leads to unnecessary writes to the db. Unnecessary, because the exact same number is already saved in the db.
My speculation: Scrolling fast could maybe lead to a race condition (I have read something about that issue with realm) and that maybe causes this weird crash, because there are multiple single writes initiated in a short time.
Solution: I now reset the flag on prepareForReuse to its initial value to prevent this misbehaviour.
The crash only happens when the cell is set up and the described behaviour happens. Therefor I'm quite confident I fixed the issue finally. Let's see. -- I was not able to reproduce the issue, but it also only happens pretty rare.
QUESTION
I've upgraded to the M1 chip 2020 Macbook Air from a 7th gen. Intel chip pc. Overall, I'm very happy and content with it but when it comes to Android Studio performance, which I use quite often, it is very disappointing I'm sorry to say. When will an Apple Silicon compatible version be available? Are any of you guys have any clue?
...ANSWER
Answered 2021-Apr-11 at 08:34use Intellij CE the latest version released on April 6th has native support for m1 and its very fast and intuitive, i've been using it and it's not very different from android studio
QUESTION
I'm currently working on a project running a jboss backend server (server-ear:ear exploded artefact) and a java gui (java 11) as frontend.
The backend contains a java service bean which accesses a database server and throws a custom exception (extends exceptions), if the variable is not found. The GUI catches the custom exceptions with a try and catch block.
The code is build and run inside of Intellij + Maven.
If i try to execute the code following arrow pops up at runtime:
...ANSWER
Answered 2021-Jun-15 at 10:54So for anyone interested what the problem was:
Since we are using a custom logger (ServiceLoggingInvocationHandler) which try catched the exceptions of an invoke method, the catched exceptions were already wrapped with an invocation exception and were not the original exceptions. To solve the problem we needed to unwrap the exceptions again before forwarding them.
Since the logger was only used in debugging mode and only when specified the problem was only occurring for me.
QUESTION
I made a node JS application using Hapi on Windows 10. After testing it locally, the script start
would run without any problem. here is the start script inside the package.json
ANSWER
Answered 2021-Jun-15 at 10:13You need to quote the *
: nodemon -e "*" src/server.js
.
Unlike Windows' cmd, Linux shells expand wildcards (as you can see in the command actually run, above the error). In Windows it's up to the program you are calling to expand wildcards. Since that is what you want in case of nodemon, it worked "by chance" on Windows without escaping the asterisk because it doesn't have any special meaning to cmd, but in Linux it will get expanded and that's not what you want.
QUESTION
When I run the following code in python 3.8.5 from an Ubuntu Server:
...ANSWER
Answered 2021-Apr-07 at 10:06I answer by myself referencing this GitHub issue: https://github.com/psf/requests/issues/4775
I solved the problem using the code below:
QUESTION
so im developing website using nodejs, and then deploying it to microsoft azure, and using Azure Database for mysql server to be exact, and importing my databse using mysql workbench, now the problem is in the CORS, everyhting going well i run it on chrome and firefox in the same pc works fine, but when i try to acces the website using another pc, i get the error says "Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at http://localhost:3000/data/price%20asc. (Reason: CORS request did not succeed)".
heres my nodejs code:
...ANSWER
Answered 2021-Jun-15 at 09:41If you are using Azure app service to host your nodejs app,the most fastest way to config CORS on Azure Portal => app service => CORS :
I did some test on my side and this is my nodejs server code(as you can see, no config for CORS) :
QUESTION
Is it possible to return the entirety of data not just part of which we are grouping by?
I mean for example - I have a dataframe with 5 columns and one of those columns contains distance
, the other one is timestamp
and the last important one is name
. I grouped dataframe by timestamp
- agg function I applied is (min) on distance
. As a return i get correctly grouped dataframe with timestamp and distance - how can i add columns name
there. If I group it by name
as well then timestamp
becomes duplicated - it has to stay unique. As a final result I need to get dataframe like this:
But instead i get this:
timestamp distance 2020-03-03 15:30:235 123 2020-03-03 15:30:435 111Whole table has more than 700k rows so joining it back on distance
gives me that amount of rows which my PC can't even handle.
Here is my groupby
which gives me 2nd table:
grouped_df = df1.groupby('timestamp')['distance'].min()
Here is what i tried to do in order to get name
inside the table:
ANSWER
Answered 2021-Jun-15 at 03:48You can use GroupBy.agg
method to apply min
on the distance column, and apply a relevant function on name column (lambda x:x
to simply return its data). This will return the dataframe with both columns back to you:
QUESTION
I have the following parameters:
...ANSWER
Answered 2021-Jun-15 at 00:59try this
QUESTION
I'm trying to check if is true or false the letter I typed.
for exemplo, I have one String that I caught from a array doing join(' '):
"problem test javascript css pc"
My current code:
...ANSWER
Answered 2021-Jun-15 at 00:14Here's an example you can follow. First you store the phrase as an array, and for every keydown
, compare the event.key
with the letter that matches the counter
index of the phrase array. For each correctly keyed letter, you advance your counter. Look through this code to get an idea of how it works
QUESTION
I'm working on an aws/amazon-freertos project. In there I found some unusual error "A stack overflow in task iot_thread has been detected".
Many time I got this error and somehow I managed to remove it by changing the code.
I just want to know what this error means actually?
As per what I know, it simply means that the iot_thread ask stack size is not sufficient. So it's getting overflow.
Is this the only reason why this error comes or can there be another reason for this?
If yes then where should I increase the stack size of the iot_thread task?
Full Log:
...ANSWER
Answered 2021-Jun-14 at 22:05It simply means that the iot_thread ask stack size is not sufficient. [...] Is this the only reason why this error comes or can there be another reason for this?
Either it is insufficient you your stack usage is excessive (due to recursion error or instantiation of instantiation of large objects or arrays. Either way the cause is the same. Whether it is due insufficient stack or excessive stack usage is a matter of design an intent.
If yes then where should I increase the stack size of the iot_thread task?
The stack for a thread is assigned in the task creation function. For a dynamically allocated stack that would be the xTaskCreate()
call usStackDepth
parameter:
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Install pc
You can use pc like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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