resa | A simple framework based on redux , redux-saga , redux-action | State Container library
kandi X-RAY | resa Summary
kandi X-RAY | resa Summary
resa = a simple way to use redux and redux-saga.
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QUESTION
I am passing a python dictionary to a Django template html script as:-
...ANSWER
Answered 2021-Apr-19 at 09:01As a rule of thumb never render anything from Django directly inside javascript. This can lead to potential XSS attacks. If you want data from the server either use AJAX if it is needed dynamically or you can use the json_script
template filter [Django docs] if it is needed only once when the page gets loaded:
Somewhere in the HTML:
QUESTION
I am looking at this Little man computer problem:
- the first input determines the value for n, it is assumed this value will be equal to four, or greater
- Example: if the first input is eight (8), then eight subsequent inputs are requested. If the subsequent inputs number were 1, 0, 0, 1, 0, 0, 0, 0 then the output would be 9.
- n input values are provided by the user, one for each bit: The first of these is the least-significant bit. The n’th input is the most-significant bit.
My attempt:
...ANSWER
Answered 2021-Apr-10 at 11:46The code you have does not use the first input. Instead it uses FOUR
. This is the first thing to change, as you don't want to loop exactly four times, but as many times as your first input is.
Secondly, you don't need to store each next input in a separate mailbox. Instead you can immediately process the 0/1 input as it decides whether you want to add something to the result or not. So you only need to update the result depending on the input's 0/1 value. You don't need to store that 0/1 value itself -- so no need of A
, B
, C
...etc. Instead put the IN
instruction inside the loop.
Then remains what exactly you should add to the result when an input turns out to be 1. As the input is in reversed order (the least significant bits come first), you should keep track of a power of 2, which you double in each iteration of the loop. That will be the number to add to the result whenever you encounter an input of 1. Because that is how the binary system works. For instance if the input of digits is 1 1 0 1, then the calculation is:
input digit power of 2 to be added running sum 1 1 yes 1 1 2 yes 3 0 4 no 3 1 8 yes 11So here is the script for that. You can run it here: first run the code snippet (which starts the LMC simulator) and then use the controls in the right panel:
QUESTION
I'm still a beginner in programming. I was writing some code (C on Linux) to calculate the page rank of some example webpages. I'm using the google formula, which is here: http link
Here is the code I wrote:
...ANSWER
Answered 2020-Nov-14 at 15:12Allocate new variables
Store the result to the new variables during calculation
Store results to the original variables from the new variables after calculation
QUESTION
Hello I created a exporter page that when user filter data and press filter... data appear down below of table and then user can export the data that filter but there is a problem while exporting and here is the ERROR IMAGE that printed in to exported CSV file:
it exported when I press the export BTN.
but Here is the Problem Area:
...ANSWER
Answered 2020-Oct-18 at 06:11The error message tells you that your variable (tags
, filter_field
, filter_country
) does not exist. This means that the variables in question do not exist at the point when you try to refer to them. Things to work on to ensure this is fixed.
You should have the file containing the definition of those variables required/included. It's easy to test whether that's the case: just throw an error (not on prod, if possible) from the file that you assume to be already existent and another from the file you are trying to use it at the point where you try to use it. If the first error is thrown, then the file is evaluated at the point you try to use it. If not, then not.
Are all the conditions met?Try to throw an exception from the inside of the if. If it's thrown, then export_rule
is set in $_POST
.
Some of your items might be missing from $_POST
. It is recommended to use defaults for the case when they do not exist. Your HTML looks to have some form
tags without the items that you expect. You need to have some HTML tags with their name
having the value of tags
, filter_field
and filter_country
respectively inside the form
tag. If you do not have that - and that looks to be the case - then that's a problem to fix for sure.
Make sure you close your tags properly. Use an HTML validator (like this one: https://validator.w3.org/) to check what makes your HTML invalid and fix the issues.
QUESTION
Is it possible to export the whole Node.JS
module and have the following features:
- Import this module from another module
- Get all
methods
andattributes
set into this module - I do not want to wrap any part of this code from my module into a function/class?
For example, I want to create a REST.js
module which has the following attributes and methods:
ANSWER
Answered 2020-Oct-02 at 10:08Yes, but in NodeJS
, you must explicitly export the variables/functions
like this:
QUESTION
I need a dynamic array that I don't have to scale(Determine) to a fixed number like the following
...ANSWER
Answered 2020-Aug-15 at 12:12It's not automatic, you have to allocate more memory every time you want to resize, copy elements into new array and delete the old one. Fortunately, standard library got you covered with std::vector
- an automatically resizable array.
QUESTION
I need " >> " to be replaced by "/" String : Test 2 >> Cat >> Cat2 Would become: Test 2/Cat/Cat2
Please know that I spent a ton of time reading all stack overflow and visiting fiddles but I can not get this right. I used online Regex tools, https://regex101.com/ and https://regexr.com/ and they confirmed RegEx was fine. Each of these has tested positive in Regex testing tools but I'm still not getting results I expect. I can not share code but here is a demonstration.
...ANSWER
Answered 2020-Aug-11 at 04:19try this code
QUESTION
Information needed: Using NodeJS framework, Promises.all used with API calls only so asynchronous code
So the bases of my problem lies where I need to create two API calls, let's call them A and B. It is guaranteed that A will either return data or a 404 and B will either return an empty array, data or a 404 (but here the 404 means invalid input, while in API call A, it actually means no resource found). My question is that if A does return a 404, the Promise.all will reject and jump into the catch block as it would normally.
My desired functionality is, if API call A returns a 404, I want API call B to continue and retrieve that data, continuing with my code. Is there a way to distinguish or even separately catch the errors thrown by the two API calls and then carry on if one resolves??
Sample code currently looks like this:
...ANSWER
Answered 2020-Jul-17 at 22:05There are several options.
You can catch the error from API call A before the
Promise.all()
and turn it into a successful request but tagged approrpiately, allowing thePromise.all()
to finish.You can use
Promise.allSettled()
to get both results, regardless of success or failure.
For the first option, you could put a .catch()
handler on apiCallA()
that will turn any rejection into a resolve, but will resolve with the error object which you can then later check if you need to:
QUESTION
I'm currently learning Swift and I wanted to create a little App, that gets Data about an Book via ISBN from the Openlibrary API. Heres a Query that I use, to get Data: https://openlibrary.org/api/books?bibkeys=ISBN:9783791504650&format=json&jscmd=data
Now the returning JSON looks like this:
...ANSWER
Answered 2020-Jun-27 at 11:17Use dictionary type [String: Isbn]
instead of object of type Books
:
QUESTION
I am facing a json parsing error. I send a get request to my server and server returns a json data. The request is sent from a wordpress site. So the json data is then encoded by php function. It works with normal texts but it doesn't work when special characters are in the data.
Here are my data returned from my server. I am trying to parse the data using JSON.parse(myData)
ANSWER
Answered 2020-Jun-15 at 16:04JSON syntax does not allow "raw" newlines in the middle of string values. You can use \n
to include a newline (well, technically a linefeed) character. Generally, the correct thing to do is to use a proven JSON-encoding library to transform a server-side data structure into compliant JSON notation.
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