* The C# version invokes EndOfStream up to 4096 times for every 1 call to feof in PHP version.
* The C# version opens the file in text mode (and thus does UTF-8 decoding) whereas the PHP version opens the file in binary mode.
https://withinboredom.info/blog/2022/03/16/my-favorite-langu...
> Like, look at this Merge Sort in C# [1] (130 lines) and then look at it in PHP (31 lines) [2]. You can’t beat that kind of productivity, not to mention in PHP, you can even mix data types (like ints and floats) where in the C# version, it’d be much more difficult.
[1] https://github.com/TheAlgorithms/C-Sharp/blob/master/Algorit...
[2] https://www.w3resource.com/php-exercises/searching-and-sorti...
The C# version is the first Google result for "c# merge sort". But a later result is from w3resource.com, which where the PHP code came from. That C# code is only 55 lines and could easily be shorter by replacing loops with standard library calls:
https://www.w3resource.com/csharp-exercises/searching-and-so...
Also, both versions of the code from w3resources.com are trash -- they use an O(N) step to remove an element from the front of the array (array_slice in PHP and List.Remove in C#), which makes them O(N^2 log N), which is even worse than a naive selection sort or bubble sort.
To read in binary, you open with 'rb' and not just 'r'
> To read in binary, you open with 'rb' and not just 'r'.
No. "The default translation mode is 'b'." [1] And even in 't' mode, it's still reading bytes in PHP vs UCS-2 characters in C#.
int StreamReader.Read()
int StreamReader.Read(char[] buffer, int index, int count)