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From: =?UTF-8?Q?Arne_Vajh=C3=B8j?= <arne@vajhoej.dk>
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Subject: Re: Simple Pascal question
Date: Sun, 4 Aug 2024 21:00:35 -0400
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On 8/4/2024 8:09 PM, Dan Cross wrote:
> In article <v8o4h8$2ut3$1@dont-email.me>,
> Arne Vajhøj  <arne@vajhoej.dk> wrote:
>> On 8/4/2024 8:22 AM, Dan Cross wrote:
>>> Interesting, this has become du jour again in modern languages,
>>> but those tend to provide access to a `slice` type that provides
>>> a window onto the underly array, and implicitly encodes a
>>> length (and usually a "capacity").  This makes working with
>>> arrays in such languages very convenient.
>>
>> Different people may have different opinions on what is a modern
>> language.
> 
> Designed in this century.

That rules out Java.

But there are still languages like C#, Scala and Kotlin.

>> But a lot of the widely used static typed languages does not
>> have any problems with arrays of different lengths as they
>> are treated as objects.
> 
> Like I said, modern languages make this a solved problem.

But C#, Scala and Kotlin also just allows for passing any length
arrays to methods taking an array.

>> Like:
>>
>> public class FlexArray {
>>      private static void dump(int[] a) {
>>          for(int v : a) {
>>              System.out.printf(" %d", v);
>>          }
>>          System.out.println();
>>      }
>>      public static void main(String[] args) throws Exception {
>>          int[] a1 = { 1 };
>>          int[] a2 = { 1, 2 };
>>          int[] a3 = { 1, 2, 3 };
>>          dump(a1);
>>          dump(a2);
>>          dump(a3);
>>      }
>> }
> 
> Java arrays are more like the aforementioned slices.

I don't think so.

Java does not have anything like slices.

C# does.

C# Span is similar to slices. But C# Span and C# array are far from
the same.

Arne