how can i use for(var i:x..y) in C# 8.0 ranges

[sgf]

like this:

for(var i:1..10)
{
 do some thing with i
}
//or
for(var i=1..10)
{
 do some thing with i
}
//or
for(var i in 1..10)
{
 do some thing with i
}
//or
foreach(var i in 1..10)
{
 do some thing with i
}

how can i do one of any like that ?
or
c#‘s ranges are currently unable to do so.

[YairHalberstadt]

In c# 9.0 you can reference https://www.nuget.org/packages/RangeForeach/0.0.1 which uses extension foreach, allowing you to do:

foreach(var i in 1..10)
{
 do some thing with i
}

[jnm2]

I'd almost rather it wasn't in the BCL and that the compiler lowered it directly, allowing only iteration over the subset range literals that aren't from-end. You'd still have to decide about exclusivity and reverse iteration.

[sgf]

maybe could be let the:
1..10 from 1 to 9 (C#8.0 compatible)
1...10 from 1 to 10;

[sgf]

This syntax will bring convenience to developers and is more intuitive than [for loop] -"for(int i=0;i<xx;i++)".
So it would be great if could adding BLC.

[DavidArno]

The different between 1 .. 10 and 1 ... 10 is too small in my view and easily missed when reading the code.

I think there was discussion around using 1 to 10 as syntax for inclusive ranges but I think that died a death.

[JustNrik]

1..10 should go from 1 to 9, that's how range works and that's how it's implemented in many other languages like python.

why would 1..10 be ambiguous on foreach but not in an array[1..10]? there's no ambiguity, the feature is clear.

I would also agree for inclusive syntax, actually, we should have inclusive range like swift, like 1..=10? kinda ugly, I can't think of a possible syntax that fits c# atm