[fpc-pascal] List of chars for case

[Ryan Joseph]

Is there a way to make a constant for a list of chars which I can use in a case statement? I’ve got a bunch of code duplication happening I’d like to clean up.

const
TChars = ('[', ']', '(', ')', '{', '}', '=', ‘:’);


case c of
TChars:
...


Regards,
Ryan Joseph

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[R0b0t1]

Post by Ryan Joseph
Is there a way to make a constant for a list of chars which I can use in a case statement? I’ve got a bunch of code duplication happening I’d like to clean up.
const
TChars = ('[', ']', '(', ')', '{', '}', '=', ‘:’);
case c of
...

I suspect you may need to use sets and the "in" operator.
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[Dennis]

Post by Ryan Joseph
Is there a way to make a constant for a list of chars which I can use in a case statement? I’ve got a bunch of code duplication happening I’d like to clean up.
const
TChars = ('[', ']', '(', ')', '{', '}', '=', ‘:’);
case c of
...
Regards,
Ryan Joseph

  case c of
     '[', ']', '(', ')', '{', '}', '=', ':' : result := true;
  end;



Dennis
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[Mattias Gaertner]

On Sun, 1 Jul 2018 16:51:08 -0600

Post by Ryan Joseph
Is there a way to make a constant for a list of chars which I can use in a case statement? I’ve got a bunch of code duplication happening I’d like to clean up.
const
TChars = ('[', ']', '(', ')', '{', '}', '=', ‘:’);
case c of

That would be useful.

Mattias
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[Ryan Joseph]

Post by Mattias Gaertner
That would be useful.

So it can’t be done?

Regards,
Ryan Joseph

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[leledumbo via fpc-pascal]

Post by Ryan Joseph
So it can’t be done?

Only through macro ATM, I believe. Note that case statement body does NOT
expect a set (it expects values, list of values and/or range of values),
despite the very similar look (missing enclosing angle brackets only), hence
the inability to do what you want.

[Ryan Joseph]

Post by leledumbo via fpc-pascal
Only through macro ATM

Yeah I cheated and used a macro. ...and that’s why we should allow for macros as a fail safe in times of distress...

Regards,
Ryan Joseph

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