match pattern "not"

[Ela]

how to replace a line's all characters (case-insensitive) NOT equal to any
of say, [ABCDE] to K?

e.g.

I am the sunny boy.

to

KKaKKKKeKKKKKKKbKKK

 

[Erwin van Koppen]

how to replace a line's all characters (case-insensitive) NOT equal to any
of say, [ABCDE] to K?

e.g.

I am the sunny boy.
to
KKaKKKKeKKKKKKKbKKK

Assuming you mean lower case [abcde], you can do it like this:

$a = 'I am the sunny boy.';

($b = $a) =~ s/[^abcde]/K/g;

print "$b\n";

KKaKKKKeKKKKKKKbKKK

 

[Jens Thoms Toerring]

how to replace a line's all characters (case-insensitive) NOT equal to any
of say, [ABCDE] to K?

e.g.

I am the sunny boy.
to
KKaKKKKeKKKKKKKbKKK

Assuming you mean lower case [abcde], you can do it like this:

$a = 'I am the sunny boy.';

($b = $a) =~ s/[^abcde]/K/g;

print "$b\n";

And to make it case-insensitive just add 'i' to the match flags:

($b = $a) =~ s/[^ABCDE]/K/gi;

Regards, Jens

 

[Mirco Wahab]

how to replace a line's all characters (case-insensitive) NOT equal to any
of say, [ABCDE] to K?
I am the sunny boy.
to
KKaKKKKeKKKKKKKbKKK

use the 'tr' operator:

my $text = 'I am the sunny boy.';
$text =~ tr/a-e/K/c;

(http://perldoc.perl.org/perlop.html)

Regards


M.

 

[Jürgen Exner]

how to replace a line's all characters (case-insensitive) NOT equal to any
of say, [ABCDE] to K?

perldoc perlop --> tr/// --> option c:
c Complement the SEARCHLIST.

I am the sunny boy.

to

KKaKKKKeKKKKKKKbKKK

But your text didn't contain any of [ABCDE], so every single character
should be 'K', shouldn't it?

jue

 

[Peter J. Holzer]

how to replace a line's all characters (case-insensitive) NOT equal to any ^^^^^^^^^^^^^^^^
of say, [ABCDE] to K? [...]
I am the sunny boy.

to

KKaKKKKeKKKKKKKbKKK

But your text didn't contain any of [ABCDE],

It did.

hp

 

[Uri Guttman]

how to replace a line's all characters (case-insensitive) NOT equal to any
of say, [ABCDE] to K?

perldoc perlop --> tr/// --> option c:
c Complement the SEARCHLIST.

I am the sunny boy.

to

KKaKKKKeKKKKKKKbKKK

But your text didn't contain any of [ABCDE], so every single character
should be 'K', shouldn't it?

SP> I think you may have missed the "case-insensitive" requirement
SP> above. Which also means, incidentally, that the OP will need to use
SP> s/// instead of tr///, given that the latter doesn't support the "i"
SP> modifier.

tr/// may not have /i but it can still do the job with:
tr/abcdeABCDE/K/c

now if the list of letters gets long it can become messier but that is
up to the OP.

uri

 

[Jürgen Exner]

how to replace a line's all characters (case-insensitive) NOT equal to any

But your text didn't contain any of [ABCDE],

It did.

Oooops, never mind.

jue