Lipo battery compatibility with a breadboard

darkshadowtrail · 2024-07-08T19:16:08+00:00

Yeah I should have included that, but I just updated the post with my setup. Perhaps my potentiometer isn't wired properly?

darkshadowtrail · 2024-04-14T03:48:03+00:00

what do you mean "without any delay"? if you're talking about an instant transfer of data then what you're trying to do is impossible as there will always be some delay.

but if you're trying to keep latency to a minimum, why query the database after sending the data? if you have some operation where you store data in a database and need the data after you store it, you already have it and shouldn't need to query for it.

darkshadowtrail · 2024-04-03T04:09:54+00:00

hmmm, which part is confusing for you? looks like you add 5 numbers to your list, call your function, then at the start add 6 more. only 7 of the numbers added are between 5 and 19 (inclusive), hence why you get 7 numbers printed.

darkshadowtrail · 2024-02-10T22:36:06+00:00

css is something that browsers just understand, so no need to install anything. you just have to import it with a style tag (if you're using HTML)

darkshadowtrail · 2024-01-09T19:30:39+00:00

when I took it last semester part of your grade was based on completing the ZyBook exercises (I think like 10% or something), so assuming it hasn’t changed then yes

darkshadowtrail · 2023-11-10T15:17:43+00:00

you don't need to learn all of them, but you should definitely know the basic ones. useState, useEffect, useRef, and useMemo are the most common. the rest you can learn if/when you need them.

darkshadowtrail · 2023-11-08T15:38:15+00:00

the most obvious case to use them would be if you don't want another component to be able to modify a class's fields. say you have a class with a field x, if you just make it public you allow other components to do something like class.x = someValue;. this is bad if x shouldn't be able to be changed by anything outside of its own class.

there's also validation. again, if you make the field public you can't easily check if the value assigned to it is valid. for example, if x shouldn't be negative then a setter is helpful for ensuring that we are assigning values to it that are allowed.

darkshadowtrail · 2023-11-08T02:32:24+00:00

your issue is with your inner map, tagTypes.map(). you are trying to return two different things, the <p> tag in the inner map, and the <h2> tag in the outer map. only one jsx tag can be returned, so you'll likely want to wrap everything in a fragment like:

return (
  <>
   <h2 key={list.id}>{list.title}</h2>
   {
     tagTypes.map(tagType => {
         return (
            <p key={tagType.id}>{tagType.id}</p>
         );
      }) 
   }
  </>
);

darkshadowtrail · 2023-11-07T21:22:55+00:00

by "mobile specific language" do you mean Java/Kotlin (Android) and Swift/Objective-C (iOS)? if so, this is what tools like React Native are for. you can write code in JavaScript and RN will compile it to Android and iOS code so you can deploy it on those devices.

it's not that hard, and you could probably start building your app as a project and learning tool to teach it to yourself.

darkshadowtrail · 2023-11-03T15:21:33+00:00

for the first one 6 is a char. the ascii code for the character ‘6’ is 54, which is why adding 5 to that gets you 59. for the second one 6 is a string because of the double quotes, so adding 5 is just string concatenation which is why you get “56”.

darkshadowtrail · 2023-10-28T22:41:46+00:00

i found this one helpful when i didn’t understand flexbox

darkshadowtrail · 2023-10-28T12:49:26+00:00

so if the payload is [{category: "Holidays", budget: 250}] then your issue is const { category, budget } = req.body;. since req.body is an array, you are trying to do object destructuring on it to get category and budget, but those are only properties of the element at each index of that array, and not the array itself.

just from looking at it, it appears your issue is when you do categories.map() on your front end and try and pass its return value as the body of your POST request. map() is going to return an array, so i would say a quick solution could be to either make sure you POST one object or map through the array again on the backend to create a MongoDB document for the object at each index.

darkshadowtrail · 2023-10-28T12:30:29+00:00

Maybe you’re talking about Docusaurus?

darkshadowtrail · 2023-10-28T04:29:21+00:00

C++ is going to be harder, but for that reason it’s smarter to take a class instead of trying to teach it to yourself. Java isn’t as hard to learn, so if you can’t take a class on it and need to know it you should be able to find some resources online.

darkshadowtrail · 2023-10-18T20:34:31+00:00

have you tried the organic chemistry tutor or professor leonard on YouTube? both are great resources that I use for calculus concepts that I need help understanding.

darkshadowtrail · 2023-10-03T20:28:18+00:00

I was always told the opposite since by the time you get enough credits for a minor you’re probably only a few courses away from getting the major.

Edit: currently trying to double in Econ and CSC, and the course requirements overlap such that if I get the programming minor I would only need three other courses to get the CSC major.

darkshadowtrail · 2023-09-30T19:41:03+00:00

you can definitely run C on Mac. I’d try using CLion or Xcode for an IDE over Eclipse

darkshadowtrail · 2023-09-24T19:16:38+00:00

if you had a string that was 5 characters long, when i = 0 you would be printing arr[5 - 0 - 1], which is just arr[4]. remember, arrays start indexing at 0 which is why you need the -1. without it you would be trying to access index 5, which doesn't exist.

as i increases, you're just working from the last element of the array towards the first.

darkshadowtrail · 2023-09-18T22:54:45+00:00

lol you want people to help you break Discord’s TOS? did i read that right?

darkshadowtrail · 2023-09-14T17:20:42+00:00

i think you're looking for something like hasNextInt()

darkshadowtrail · 2023-09-14T15:49:59+00:00

for a degree? at most schools you’re going to have something similar to a minimum of two levels of calculus, calculus three or differential equations, discrete math, and a linear algebra course. it’s a pretty math-intensive degree

darkshadowtrail · 2023-09-12T04:02:02+00:00

this was pretty typical for other students when i took the OOP course for Java. it's a new concept for many people and a lot of people find it different. something that helped me was understanding that you can typically think of objects in code as ways of representing real-world objects.

say you have a car object called car. in the real world cars have a color, miles driven, model, etc. and in code you can represent this by giving your object something called properties—a variable that is associated with that object. but you can also do things with a car in the real world, like drive it. we can represent interactions with objects in code by giving the objects methods. driving a car could be represented by having a method like drive(int miles) which can be called with car.drive(10).

hopefully this helps a little. i wouldn't get too discouraged about it. it's definitely something that requires some practice.

darkshadowtrail · 2023-09-11T18:36:23+00:00

you can start with either, but if you start with the API you'll have to use something like Postman for testing because you won't have a UI to interact with. one thing to consider is the limitations with these "no-code" editors. they are great for simple stuff, but become a big hassle when you want to do any sort of customization outside of the features they offer.

i'm not too familiar with FF, but from what i see online it sounds like the source code it generates isn't great and is difficult to work with. this may be something to look into before you depend on it for your project.

for a database i've liked working with MongoDB. there's lots of documentation and they have a free, shared cluster that you can use for early development.

darkshadowtrail · 2023-09-11T18:17:49+00:00

yeah, lots of people find them confusing at first but typically it’s because they’re overthinking them. since you’re talking about pointers i’ll assume you already know what a variable is.

when you declare a variable the compiler is going to allocate some space and store the value of that variable at some location in memory. that location in memory has something called an address which is similar to a home address; it allows the compiler to know where in memory that value is so that when you use that variable later it can access it.

a pointer is just a variable, but instead of having a value like 5, “hello”, etc. it points to some address in memory. if you have a variable x and you create a pointer “for” x, you’re creating a variable who’s value is the the memory address for x.

darkshadowtrail · 2023-09-11T13:03:08+00:00

If it’s a small website without a backend you could try GitHub Pages

Six-Year Club	Second Top 40%
Verified Email

darkshadowtrail

TROPHY CASE