Questions tagged [undefined]
A variable is undefined if it has not been assigned a value.
undefined
6,836
questions
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11
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Perl IO::File dying with error "Can't use an undefined value as a symbol reference at script.pl line LINE" - can't write to file
Trying to open a file handle to write text to, but script keeps failing with the error:
Can't use an undefined value as a symbol reference at C:/Users/USER/Documents/script.pl line 207, <GEN1> ...
- 1,436
-1
votes
1
answer
42
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API is returning undefined for all of my dynamic categories
I am making a mock movie search engine where the initial search results will pull up an array on movies based on a search term, and after you click "SEE MORE" on the specific movie you want ...
-6
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0
answers
42
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Why is my function stating Name error not defined when it is very obviously defined and also working independently but not as nested in another code [duplicate]
I am writing a code that can visualize different types of sorting algorithms. I have integrated 5 different algorithms all of which work just fine but for some reason the introsort code just doesnt ...
1
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0
answers
9
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Warning: Undefined array key 0 releases/80/vendor/magento/module-configurable-product/Model/Product/Type/VariationMatrix.php on line 47
A configurable in the Product view opens up with the error message, of which I cannot proceed any further. The children attached can open up without issue. There were not any issues with opening up ...
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votes
1
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In Alpine.JS, this.property inside method is undefined
I have a request for help with Alpine.JS
I have a packetaApiKey property defined. When I access it this.packetaApiKey in the pickPoint method, it works as expected. But in the showSelectedPickupPoint ...
0
votes
1
answer
26
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Angular - TypeError: Cannot read properties of undefined (reading 'forEach')
I am trying to read the roles array from this object and getting the error:
TypeError: Cannot read properties of undefined (reading 'forEach')
Code:
this.data.roles.forEach(role => {
this....
1
vote
1
answer
39
views
Can TypeScript specify keys that are allowed to not exist, but cannot be assigned to `undefined`? [duplicate]
Summary
I want to disallow any explicit undefined value while still allowing implicit undefined values.
Background
In JavaScript, we have this behavior where accessing a key that does not exist yields ...
- 2,419
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vote
2
answers
64
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Empty vs. Undefined in Javascript [duplicate]
In Javascript, if I make an array using Array(10), it creates an array with 10 empty items. If I access any item in that array, it returns undefined. However, if I create an array with a length of 10 ...
- 45
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0
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43
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Uncaught TypeError: Cannot read properties of undefined while reading values from an array that is not undefined in console.log()
I am developing a simple application in React, and I have an array that I want to use .map and display some options. There are two selects, one for the year, and one for the month, which should update ...
0
votes
1
answer
20
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Having an issue with Tyranobuilder, unexpected character issue
I am building a game using Tyranobuilder, I defined a character focus behavior on game settings, such that when a character joins the scene and speaks, they will be bright and when another character ...
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47
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Problem when using loop-generated variables in ansible
What i'm trying to do is generating lots of similar directory trees. I woul like to set a dict which describes the pattern of the tree. Then i want ansible to generate multiple directory trees with ...
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0
answers
22
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Reading values from 'Google form' is undefined [duplicate]
I wrote a code in App Script and connected it to a form on the Google Forum
Now the problem is that I can't read the data from the fields in any way.
I keep getting 'undefined' errors
Like: TypeError: ...
0
votes
0
answers
18
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Function returns UNDEFINED while scipt does returns values
I was able to run this script and get the values out of the response. Happy as I was, I wrapped the script in a function and then it returned UNDEFINED. I am pulling all my hairs because the script ...
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undefined object while using useContext
This particular things seems happening when i run these codes
AuthContext.jsx:
// context is a state management tool for passing props
import { createContext, useReducer } from "react";
// ...
1
vote
1
answer
98
views
vuejs3 and vite import.meta.env.VITE_BASE_URL not working
Hello I'm trying to get base url from .env file. And I'm getting undefined.
I have tried some stack overflow answers and documentation but it didn't help.
console.log('env', import.meta.env....
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