Re: run on regex line?
Just want to elaborate on the two different ways of combining statements mentioned earlier. 1A. If you're using `-pe` command line flags, you use `s///` and combine statements with `;` semicolon: ~$ echo 'roses are red' | raku -pe 's/roses/lilacs/; s/red/blue/' lilacs are blue 1B. Using `-pe` with `s///` but `andthen` instead of `;` is apparently a mistake--you don't get what you expect: ~$ echo 'roses are red' | raku -pe 's/roses/lilacs/ andthen s/red/blue/' lilacs are red 2A. Conversely, if you're using `-ne` command line flags, you use `S///` and combine statements with `andthen`: ~$ echo 'roses are red' | raku -ne 'S/roses/lilacs/ andthen S/red/blue/.put' lilacs are blue 2B. Again, using `-ne` with `S///` but `;` instead of `andthen` is apparently a mistake--you don't get what you expect: ~$ echo 'roses are red' | raku -ne 'S/roses/lilacs/; S/red/blue/.put' roses are blue HTH, Bill. > On Jan 20, 2024, at 04:20, Richard Hainsworth wrote: > Todd, > You could use Elizabeth Mattijsen's App-rak. It's a Raku utility that does > grep, sed, awk. > Richard
Re: run on regex line?
Todd,
You could use Elizabeth Mattijsen's App-rak. It's a Raku utility that
does grep, sed, awk.
Richard
On 20/01/2024 10:53, ToddAndMargo via perl6-users wrote:
On 1/20/24 01:42, William Michels via perl6-users wrote:
On Jan 19, 2024, at 23:49, ToddAndMargo via perl6-users
wrote:
Hi All,
Can I do a run on line with a regex like I
just did with sed?
$ zbarimg Screenshot.png | sed -e 's/.*?secret=//' -e 's/&.*//'
Usually I just do two lines in Raku.
Many thanks,
-T
Hi Todd,
Not that I am aware. The naive way is just to pipe them:
~$ echo 'roses are red' | raku -pe 's/roses/lilacs/' | raku -pe
's/red/blue/'
lilacs are blue
The Raku way would be combining those two statements into one Raku call:
~$ echo 'roses are red' | raku -pe 's/roses/lilacs/; s/red/blue/'
lilacs are blue
I like this one! It is easy to figure out at a glance.
#OR ("big-S" notation below)
~$ echo 'roses are red' | raku -ne 'S/roses/lilacs/ andthen
S/red/blue/.put'
lilacs are blue
The `andthen` call reloads the `$_` topic variable. For more
examples, see:
https://stackoverflow.com/questions/65066358/concatenating-s-in-raku
HTH, Bill
It does. Thank you!
Raku's regex's spoil me. sed has to be
the editor from ...
Then again, I still use vi at times.
Re: run on regex line?
On 1/20/24 01:42, William Michels via perl6-users wrote:
On Jan 19, 2024, at 23:49, ToddAndMargo via perl6-users
wrote:
Hi All,
Can I do a run on line with a regex like I
just did with sed?
$ zbarimg Screenshot.png | sed -e 's/.*?secret=//' -e 's/&.*//'
Usually I just do two lines in Raku.
Many thanks,
-T
Hi Todd,
Not that I am aware. The naive way is just to pipe them:
~$ echo 'roses are red' | raku -pe 's/roses/lilacs/' | raku -pe
's/red/blue/'
lilacs are blue
The Raku way would be combining those two statements into one Raku call:
~$ echo 'roses are red' | raku -pe 's/roses/lilacs/; s/red/blue/'
lilacs are blue
I like this one! It is easy to figure out at a glance.
#OR ("big-S" notation below)
~$ echo 'roses are red' | raku -ne 'S/roses/lilacs/ andthen S/red/blue/.put'
lilacs are blue
The `andthen` call reloads the `$_` topic variable. For more examples, see:
https://stackoverflow.com/questions/65066358/concatenating-s-in-raku
HTH, Bill
It does. Thank you!
Raku's regex's spoil me. sed has to be
the editor from ...
Then again, I still use vi at times.
Re: run on regex line?
> On Jan 19, 2024, at 23:49, ToddAndMargo via perl6-users
> wrote:
>
> Hi All,
>
> Can I do a run on line with a regex like I
> just did with sed?
>
> $ zbarimg Screenshot.png | sed -e 's/.*?secret=//' -e 's/&.*//'
>
> Usually I just do two lines in Raku.
>
> Many thanks,
> -T
Hi Todd,
Not that I am aware. The naive way is just to pipe them:
~$ echo 'roses are red' | raku -pe 's/roses/lilacs/' | raku -pe 's/red/blue/'
lilacs are blue
The Raku way would be combining those two statements into one Raku call:
~$ echo 'roses are red' | raku -pe 's/roses/lilacs/; s/red/blue/'
lilacs are blue
#OR ("big-S" notation below)
~$ echo 'roses are red' | raku -ne 'S/roses/lilacs/ andthen S/red/blue/.put'
lilacs are blue
The `andthen` call reloads the `$_` topic variable. For more examples, see:
https://stackoverflow.com/questions/65066358/concatenating-s-in-raku
HTH, Bill
