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Postings from March 2023
On Mon, 13 Mar 2023 at 11:03, Ruud H.G. van Tol via perl5-porters < perl5-porters@perl.org> wrote: > > On 2023-03-10 10:24, Ruud H.G. van Tol wrote: > > On 2023-03-09 17:58, Robert Rothenberg wrote: > >> I'm a fan of using constants in code, and often using interpolatable > >> constants with something like Readonly or Const::Fast for deep > >> constants: > > > > I think it is good to list all that can be meant by 'constant'. > > > > There are constants that direct compilation. > > For example to "compile out" a part of the code. > > Or constants that can be inlined at compilation. > > > > Per process there is $^T, generally a fixed integer. > Sadly $^T is not a constant, nor read-only. I have been bitten by that before. > > Etc. etc. > > > > From tchrist (2011), in a different context: > > | Note also that anything that pretends > | thereâs a such thing as a negative constant > | doesnât understand the grammar; just run > | perl -MO=Concise,-exec -le '$x = -3**$y' > | to find out the whys and the wherefores. > Interesting. I'd call that a bug not a feature. cheers, Yves -- perl -Mre=debug -e "/just|another|perl|hacker/"Thread Previous | Thread Next