C#•3mo ago

✅ whats up with this console output

Value 
      yellowThresholdWidth == 195.42857142857144 
                                                 redThresholdWidth == 684
                                                                         barWidth == 760

Value 
      yellowThresholdWidth == 195.42857142857144 
                                                 redThresholdWidth == 684
                                                                         barWidth == 760

Console.WriteLine($"Value " +
                              $"\nyellowThresholdWidth == {yellowThresholdWidth} " +
                              $"\nredThresholdWidth == {redThresholdWidth}" +
                              $"\nbarWidth == {barWidth}");

Console.WriteLine($"Value " +
                              $"\nyellowThresholdWidth == {yellowThresholdWidth} " +
                              $"\nredThresholdWidth == {redThresholdWidth}" +
                              $"\nbarWidth == {barWidth}");

93 Replies

hutoanhill•3mo ago

why is this adding so many tabs!? it makes no since. this is super simple but broken the new line somehow adds space chars equal to the number of chars before the line break smells like a bug

SG97•3mo ago

what do you mean?

hutoanhill•3mo ago

SG97•3mo ago

cannot reproduce that

hutoanhill•3mo ago

yea i am soo screwed

Omnissiah•3mo ago

is that rider? maybe there's a setting for newline

hutoanhill•3mo ago

possible. will check that out

cap5lut•3mo ago

that looks a lot like that the console (the tab, not the class) expects a \r\n but Console.WriteLine() only writes a \n for some reason. \r = CR = Carriage Return, moves the cursor back to the line start (as in x = 0, if u will) \n = NL = New Line, move to the next line (as in y + 1, if u will) if u execute it from terminal/console outside of the IDE, does it work there as expected?

canton7•3mo ago

The "some reason" is that their string contains "\n" -- they're only calling Console.WriteLine once And seconded, this is exactly the output when you send "\n", but the terminal doesn't add an implicit "\r" with every "\n"

cap5lut•3mo ago

oh right

Unknown User•3mo ago

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MODiX•3mo ago

TeBeCo

REPL Result: Success

using System;

var yellowThresholdWidth = 1;
var redThresholdWidth = 2;
var barWidth = 3;

Console.WriteLine($"""
Value 
yellowThresholdWidth == {yellowThresholdWidth}  
redThresholdWidth == {redThresholdWidth} 
barWidth == {barWidth} 
""");

using System;

var yellowThresholdWidth = 1;
var redThresholdWidth = 2;
var barWidth = 3;

Console.WriteLine($"""
Value 
yellowThresholdWidth == {yellowThresholdWidth}  
redThresholdWidth == {redThresholdWidth} 
barWidth == {barWidth} 
""");

Console Output

Value 
yellowThresholdWidth == 1  
redThresholdWidth == 2 
barWidth == 3

Value 
yellowThresholdWidth == 1  
redThresholdWidth == 2 
barWidth == 3

Compile: 480.701ms | Execution: 30.757ms | React with ❌ to remove this embed.

Unknown User•3mo ago

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MODiX•3mo ago

TeBeCo

REPL Result: Success

using System;

var yellowThresholdWidth = 1;
var redThresholdWidth = 2;
var barWidth = 3;

Console.WriteLine($"""
    Value 
    yellowThresholdWidth == {yellowThresholdWidth}  
    redThresholdWidth == {redThresholdWidth} 
    barWidth == {barWidth} 
    """);

using System;

var yellowThresholdWidth = 1;
var redThresholdWidth = 2;
var barWidth = 3;

Console.WriteLine($"""
    Value 
    yellowThresholdWidth == {yellowThresholdWidth}  
    redThresholdWidth == {redThresholdWidth} 
    barWidth == {barWidth} 
    """);

Console Output

Value 
yellowThresholdWidth == 1  
redThresholdWidth == 2 
barWidth == 3

Value 
yellowThresholdWidth == 1  
redThresholdWidth == 2 
barWidth == 3

Compile: 506.782ms | Execution: 30.704ms | React with ❌ to remove this embed.

Unknown User•3mo ago

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MODiX•3mo ago

TeBeCo

REPL Result: Success

using System;

var yellowThresholdWidth = 1;
var redThresholdWidth = 2;
var barWidth = 3;

Console.WriteLine($"""
    Value 
    yellowThresholdWidth == {yellowThresholdWidth}  
    redThresholdWidth == {redThresholdWidth} 
    barWidth == {barWidth} 
""");

using System;

var yellowThresholdWidth = 1;
var redThresholdWidth = 2;
var barWidth = 3;

Console.WriteLine($"""
    Value 
    yellowThresholdWidth == {yellowThresholdWidth}  
    redThresholdWidth == {redThresholdWidth} 
    barWidth == {barWidth} 
""");

Console Output

    Value 
    yellowThresholdWidth == 1  
    redThresholdWidth == 2 
    barWidth == 3

    Value 
    yellowThresholdWidth == 1  
    redThresholdWidth == 2 
    barWidth == 3

Compile: 483.969ms | Execution: 30.941ms | React with ❌ to remove this embed.

cap5lut•3mo ago

im cant find it, which line break does that multi line string literal use? the one from the source code, depends on how u compile or runtime dependent?

Unknown User•3mo ago

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cap5lut•3mo ago

so there is no clear answer to that D:

Unknown User•3mo ago

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cap5lut•3mo ago

seems easy to check

MODiX•3mo ago

cap5lut

sharplab.io (click here)

var yellowThresholdWidth = 1;
var redThresholdWidth = 2;
var barWidth = 3;
Console.WriteLine($"""
    Value
    yellowThresholdWidth == {yellowThresholdWidth}
    redThresholdWidth == {redThresholdWidth}
    barWidth == {barWidth}
    """);

var yellowThresholdWidth = 1;
var redThresholdWidth = 2;
var barWidth = 3;
Console.WriteLine($"""
    Value
    yellowThresholdWidth == {yellowThresholdWidth}
    redThresholdWidth == {redThresholdWidth}
    barWidth == {barWidth}
    """);

React with ❌ to remove this embed.

cap5lut•3mo ago

the line break is included and encoded as CRLF in the string literal

Unknown User•3mo ago

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cap5lut•3mo ago

defaultInterpolatedStringHandler.AppendLiteral("\r\nredThresholdWidth == "); there is encoded as CRLF, and i doubt any magic happens under the hood to normalize the literal. thus it seems more likely that its source dependent

Unknown User•3mo ago

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cap5lut•3mo ago

oh sorry, should have mentioned that but it might not be true, i expected that sharplab runs on a linux container

Unknown User•3mo ago

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cap5lut•3mo ago

but its windows Microsoft Windows NT 10.0.17763.0

Unknown User•3mo ago

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cap5lut•3mo ago

but in the end it would still be compile time and not runtime so its either source dependent or compiler host platform dependent because its not using Environment.NewLine at all but the escape sequence

MODiX•3mo ago

TeBeCo

REPL Result: Failure

using System;
var s = $"""
    a
    b
    """;
        
ReadOnlySpan<char> x = s.AsSpan();
foreach(var c in x)
{
    Console.WriteLine((byte)c);
}

using System;
var s = $"""
    a
    b
    """;
        
ReadOnlySpan<char> x = s.AsSpan();
foreach(var c in x)
{
    Console.WriteLine((byte)c);
}

Exception: CompilationErrorException

- Field or auto-implemented property cannot be of type 'ReadOnlySpan<char>' unless it is an instance member of a ref struct.
- foreach statement cannot operate on enumerators of type 'ReadOnlySpan<char>.Enumerator' in async or iterator methods because 'ReadOnlySpan<char>.Enumerator' is a ref struct.

- Field or auto-implemented property cannot be of type 'ReadOnlySpan<char>' unless it is an instance member of a ref struct.
- foreach statement cannot operate on enumerators of type 'ReadOnlySpan<char>.Enumerator' in async or iterator methods because 'ReadOnlySpan<char>.Enumerator' is a ref struct.

Compile: 457.638ms | Execution: 0.000ms | React with ❌ to remove this embed.

Unknown User•3mo ago

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cap5lut•3mo ago

modix is embedding that code weirldy

MODiX•3mo ago

cap5lut

REPL Result: Success

using System;
var s = $"""
    a
    b
    """;
        
foreach(var c in s.ToCharArray())
{
    Console.WriteLine((byte)c);
}

using System;
var s = $"""
    a
    b
    """;
        
foreach(var c in s.ToCharArray())
{
    Console.WriteLine((byte)c);
}

Console Output

97
10
98

97
10
98

Compile: 409.472ms | Execution: 35.986ms | React with ❌ to remove this embed.

Unknown User•3mo ago

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canton7•3mo ago

Wat?

Unknown User•3mo ago

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MODiX•3mo ago

cap5lut

REPL Result: Success

Environment.OSVersion

Environment.OSVersion

Result: OperatingSystem

{
  "platform": 4,
  "servicePack": "",
  "version": "5.15.0.1059",
  "versionString": "Unix 5.15.0.1059"
}

{
  "platform": 4,
  "servicePack": "",
  "version": "5.15.0.1059",
  "versionString": "Unix 5.15.0.1059"
}

Compile: 221.486ms | Execution: 18.618ms | React with ❌ to remove this embed.

Unknown User•3mo ago

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canton7•3mo ago

What's OS dependent?

Unknown User•3mo ago

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cap5lut•3mo ago

linebreak in multi line string literals

canton7•3mo ago

Doesn't it literally depend on whether your source file is saved with LF or CRLF?

Unknown User•3mo ago

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cap5lut•3mo ago

not sure if discord normalizes the linebreaks somewhere tho

Unknown User•3mo ago

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cap5lut•3mo ago

thats the question we have right now ;p

Unknown User•3mo ago

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canton7•3mo ago

I'm pretty sure I read it an issue somewhere in dotnet/ a long time ago

Unknown User•3mo ago

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canton7•3mo ago

https://github.com/dotnet/csharplang/discussions/8237 pops up from a quick search

Unknown User•3mo ago

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canton7•3mo ago

IIRC there are unit tests in dotnet/runtime (or maybe /roslyn?) which are sensitive to the file line endings -- I saw that pop up recently

Unknown User•3mo ago

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canton7•3mo ago

It was also raised in the proposal: https://github.com/dotnet/csharplang/issues/4304

Unknown User•3mo ago

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canton7•3mo ago

Just tell git to checkout as LF? .gitattributes:

*.cs    text eol=lf

*.cs    text eol=lf

Unknown User•3mo ago

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canton7•3mo ago

What? That line applies to all .cs files in your repo

Unknown User•3mo ago

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cap5lut•3mo ago

for me its more the just-dont-use-raw-strings thingy here 😂

canton7•3mo ago

Why not checkout .cs files as LF across the board?

Unknown User•3mo ago

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canton7•3mo ago

You should have things set up so that they're stored in git as LF anyway

Unknown User•3mo ago

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canton7•3mo ago

Yeah, if you specifically need CR in a particular string literal, that's a pain

Unknown User•3mo ago

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canton7•3mo ago

But that's a pain in languages which don't rely on the file's line endings like Python, as well

Unknown User•3mo ago

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canton7•3mo ago

Yeah, it wasn't clear that that's what you meant, because you speak in half-sentences 😉

Unknown User•3mo ago

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cap5lut•3mo ago

in ur local repo, even if u set it as EOL=LF, it wouldnt touch the source until u commit (or later) right? so if u locally work with an IDE that write CRLF everything works fine, all tests run fine and then after committing (and maybe more) it would explode? i .... think we should move this discussion out of this thread by now 😒

canton7•3mo ago

If they were previously CRLF, then you added that .gitattributes, you'd need git add --renormalize to change the actual files

cap5lut•3mo ago

do IDEs read/analyze/respect these settings if u create a new cs file?

canton7•3mo ago

Not sure?

cap5lut•3mo ago

and thats the problem ;p actually its not

canton7•3mo ago

It should get sorted the first time you git add maybe? Little fuzzy there

cap5lut•3mo ago

u would add the .editorconfig thingy to the repo as well, wouldnt u?

Unknown User•3mo ago

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cap5lut•3mo ago

i never ever touched these myself so im a virgin there 😂

Unknown User•3mo ago

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canton7•3mo ago

I've never had that not work

Unknown User•3mo ago

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cap5lut•3mo ago

i think its also a bit about where that goes, nowadays a lot of terminals/text viewers/etc simply treat both a LF and CRLF as the "expected" line break right?

Unknown User•3mo ago

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cap5lut•3mo ago

this is at the same time so weird but also understandable, i think i will never forget it 😂

hutoanhill•3mo ago

Unknown User•3mo ago

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hutoanhill•3mo ago

Oh boy that’s a lot of text

MODiX•3mo ago

TeBeCo

REPL Result: Success

using System;

var yellowThresholdWidth = 1;
var redThresholdWidth = 2;
var barWidth = 3;

Console.WriteLine($"""
    Value 
    yellowThresholdWidth == {yellowThresholdWidth}  
    redThresholdWidth == {redThresholdWidth} 
    barWidth == {barWidth} 
    """);

using System;

var yellowThresholdWidth = 1;
var redThresholdWidth = 2;
var barWidth = 3;

Console.WriteLine($"""
    Value 
    yellowThresholdWidth == {yellowThresholdWidth}  
    redThresholdWidth == {redThresholdWidth} 
    barWidth == {barWidth} 
    """);

Console Output

Value 
yellowThresholdWidth == 1  
redThresholdWidth == 2 
barWidth == 3

Value 
yellowThresholdWidth == 1  
redThresholdWidth == 2 
barWidth == 3

Quoted by

<@689473681302224947> from #whats up with this console output (click here)

Compile: 506.782ms | Execution: 30.704ms | React with ❌ to remove this embed.

Unknown User•3mo ago

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MODiX•3mo ago

If you have no further questions, please use /close to mark the forum thread as answered

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Programming

✅ whats up with this console output