[OT] Sharp Regrets: Top 10 Worst C# Features

[Walter Bright via Digitalmars-d]

On 8/22/2015 8:32 PM, H. S. Teoh via Digitalmars-d wrote:
> 	People who are more than casually interested in computers should
> 	have at least some idea of what the underlying hardware is like.
> 	Otherwise the programs they write will be pretty weird.
> 	-- D. Knuth

A good friend of mine in college decided to learn Fortran, having never 
programmed before. Being a practical sort, he got a copy of the Fortran-10 
reference manual, read it, and wrote a program. Being an amazingly smart man, 
his program worked.

But it ran awfully slowly. He was quite mystified, and finally asked for help 
from someone who knew Fortran. It was quickly discovered that the program wrote 
a file by opening the file, appending a character, then closing the file, for 
each byte in the file. (You can imagine how slow that is!)

My friend defended himself with the fact that the Fortran reference manual made 
no mention about how to do file I/O for performance - knowledge of this sort of 
thing was just assumed. He was quite right.