Sets Vs Arrays. When to use and why.

[PascalDragon]

On a completely different note, it would be nice if FPC allowed array ranges to be specified using gapless enumerations that do not start at zero.

One could indeed argue that this would make sense considering that both arrays with enum indices and arrays not starting at 0... 🤔

Another nice improvement would be for FPC to allow using "with" to specify enumeration scopes.

What have you in mind here?

[440bx]

Another nice improvement would be for FPC to allow using "with" to specify enumeration scopes.

What have you in mind here?

What I have in mind is that when enumerations are scoped then the enumeration identifier should be allowed in a "with" statement since a "with" specifies a scope.  e.g, (and presuming scoped enums are on):

Code: Pascal  [Select][+][-]

1. var
2.   SomeSet : set of scoped_enum_identifier;
3.  
4. begin
5.   ..
6.   { this  (note: begin/end present for aesthetic purposes only) }
7.  
8.   with <scoped_enum_identifier> do
9.   begin
10.     SomeSet := [enum_element_a,
11.                 enum_element_b,
12.                 enum_element_n];
13.   end;
14.  
15.   { instead of (as currently required) }
16.  
17.     SomeSet := [scoped_enum_identifier.enum_element_a,
18.                 scoped_enum_identifier.enum_element_b,
19.                 scoped_enum_identifier.enum_element_n];
20. end;
21.  

[PascalDragon]

Another nice improvement would be for FPC to allow using "with" to specify enumeration scopes.

What have you in mind here?

What I have in mind is that when enumerations are scoped then the enumeration identifier should be allowed in a "with" statement since a "with" specifies a scope.  e.g, (and presuming scoped enums are on):

Ah. That is indeed something one could think about... 🤔 Maybe you want to file a feature request so that it's not forgotten?

[440bx]

Ah. That is indeed something one could think about... 🤔 Maybe you want to file a feature request so that it's not forgotten?

Done.

issue/request: 41191
link: https://gitlab.com/freepascal.org/fpc/source/-/issues/41191

[TBMan]

I've used a set when I want to get a keyboard response and I want to restrict it:

Code: Pascal  [Select][+][-]

1. GoodInput : set of char = ['1','2','3','4','5','6','7','8','9']

[PascalDragon]

Ah. That is indeed something one could think about... 🤔 Maybe you want to file a feature request so that it's not forgotten?

Done.

issue/request: 41191
link: https://gitlab.com/freepascal.org/fpc/source/-/issues/41191

Thank you

[440bx]

Thank you

You're welcome.