I am making a medicine tracker as a personal project and wanted to make nodes based off the days of the week. I was trying to see if I can initialize them in a for loop. Is that possible without hard coding the name of the Node?
#How to initialize different days using a for loop
dreamy quartz
cyan acornBOT
<@&987246399047479336> please have a look, thanks.
main badger
You can use streams here!
not sure if you're familiar with these, but:
var nodes = Arrays.stream(array)
.map(element -> new Node(false, element))
.toArray(Node[]::new);;
@dreamy quartz
dreamy quartz
I never learned about streams but I have seen them on some other projects. How do they work?
main badger
Arrays.stream(array)
- Creates a stream of the array elements
.map(element -> new Node(false, element))
- The map method is used to "translate" or "convert" from one type to another. This will be applied for each of the elements.
- "Take each element of the array and make make
new Nodeout of it
.toArray(Node[]::new)
- Converts back to the array of the target type - in your case, array of
Nodes
its just a fluent way to make chaining operations which would otherwise require a loop
if you use intellij, it can sometimes translate it back to the loop version!
dreamy quartz
Okay tysm!!!
main badger
definitely powerful feature of JDK, highly recommended to learn
stable spear
Okay tysm!!!
btw a stream is generally just
A sequence of elements
orchid rain
You can use streams here!
Please don't teach stream if they struggle with loops 🤦
@dreamy quartz make an array of nodes
swift mesa
If you are familiar with using enums, you can create the initial array using the below method:
DayOfWeek[] days = DayOfWeek.values();
If not, pls follow the solution provided by @main badger.
stable spear
(best to understand the solution first before using it)