Re:4B If Statements
by avandecreme on Friday December 12, 2025 @02:22PM
(#46247703)
This reminds me of when I learned to program on my casio calculator.
There was a function to detect a key press which would return a number identifying the pressed key.
I needed to map that number to the letter printed on the key to print it on the screen.
I don't remember whether there was no hashmap data structure or I just didn't know about it, but I implemented it with a serie of if.
The problem with that solution is that while mapping A was fast, Z was very slow because it was at the end of the list.
That is how I discovered divide and conquer/ dichotomy with if branches.
There was a function to detect a key press which would return a number identifying the pressed key.
I needed to map that number to the letter printed on the key to print it on the screen. I don't remember whether there was no hashmap data structure or I just didn't know about it, but I implemented it with a serie of if.
The problem with that solution is that while mapping A was fast, Z was very slow because it was at the end of the list. That is how I discovered divide and conquer/ dichotomy with if branches.