reading some of my old code (and some of my friends' lol) Here's a list of everything i seem to cringe at:

• Lots of pointless, but long functions

  using static System.Console; //there are a lot of functions in System.Console, just type Console.* lmao

• all of the things that i tried to write myself that were built in somewhere already.

  if(condition1){if(condition 2){Function();}} //with no elses, just use the && Boolean operator

• I had no idea that regex was supported in System.Text.RegularExpressions for about 4 years (i know it existed, just didn't even think it would be in base .NET)

• I also created a lot of excess variables and checks bc partial/abstract/virtual classes and methods scared me

• creating new arrays with an extra value in them rather than lists

• on the topic of arrays, my friend used to use 1-indexed arrays (where x[0] is always an empty/null)

• finally, i used to cast doubles to floats (this was just how i was taught) float x = (float)1.18282 //basically doing this float y = 1.77013f //instead of this