Re: More questions on the "-pe" one-liner flag: in conjunction withs/// and tr///

The s/// substitution operator is not a method (and tr/// also not). They
both modify their operands, so there is no need anyway for a '.=' syntax,
since they do already what the '.=' syntax is aimed at.

Cheers,
Laurent.

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Le mer. 6 mai 2020 à 23:11, William Michels <wjm1@caa.columbia.edu> a
écrit :

> Hello,
>
> Can anyone answer why--in a one-liner using the "-pe" flag--the s///
> and tr/// functions do not require a "." (dot) preceding the function
> call? Clearly adding a "." (dot) before either one results in an error
> (code below). Also, adding a ".=" (dot-equals) sign before the either
> the s/// or the tr/// function results in an error (code below).
> Additionally, I would like to know if this is a related-or-different
> issue compared to the question I posted earlier this week.
>
> Any explanation or assistance appreciated,
>
> Thank you, Bill.
>
> mbook:~ homedir$ cat demo1.txt
> this is a test,
> I love Unix,
> I like Linux too,
> mbook:~ homedir$
>
> mbook:~ homedir$ perl6 -pe 's/love|like/admire/; ' demo1.txt
> this is a test,
> I admire Unix,
> I admire Linux too,
> mbook:~ homedir$ perl6 -pe '.s/love|like/admire/; ' demo1.txt
> ===SORRY!=== Error while compiling -e
> Missing required term after infix
> at -e:1
> ------> .s/love|like/admire/;
>     expecting any of:
>         prefix
>         term
> mbook:~ homedir$ perl6 -pe '.=s/love|like/admire/; ' demo1.txt
> ===SORRY!=== Error while compiling -e
> Missing required term after infix
> at -e:1
> ------> .=s/love|like/admire/;
>     expecting any of:
>         prefix
>         term
> mbook:~ homedir$
>
> mbook:~ homedir$ perl6 -pe 'tr/aeiou/12345/;' demo1.txt
> th3s 3s 1 t2st,
> I l4v2 Un3x,
> I l3k2 L3n5x t44,
> mbook:~ homedir$ perl6 -pe '.tr/aeiou/12345/;' demo1.txt
> ===SORRY!=== Error while compiling -e
> Missing required term after infix
> at -e:1
> ------> .tr/aeiou/12345/;
>     expecting any of:
>         prefix
>         term
> mbook:~ homedir$ perl6 -pe '.=tr/aeiou/12345/;' demo1.txt
> ===SORRY!=== Error while compiling -e
> Missing required term after infix
> at -e:1
> ------> .=tr/aeiou/12345/;
>     expecting any of:
>         prefix
>         term
> mbook:~ homedir$
>

• More questions on the "-pe" one-liner flag: in conjunction with s///and tr/// by William Michels via perl6-users
• Re: More questions on the "-pe" one-liner flag: in conjunction withs/// and tr/// by Laurent Rosenfeld via perl6-users
• Re: More questions on the "-pe" one-liner flag: in conjunction withs/// and tr/// by William Michels via perl6-users
• Re: More questions on the "-pe" one-liner flag: in conjunction withs/// and tr/// by Gianni Ceccarelli
• Re: More questions on the "-pe" one-liner flag: in conjunction withs/// and tr/// by Laurent Rosenfeld via perl6-users
• Re: More questions on the "-pe" one-liner flag: in conjunction withs/// and tr/// by Gianni Ceccarelli