Uno de los ejemplos del tutorial:
(tomados de aca wget http://szabgab.com/talks/perl6/perl6_examples.tar.gz)
osvaldo@vostro:/opt/src/rakudo/examples/files$ cat read_file.p6 #!/usr/bin/perl6use v6;my $filename = "examples/files/read_file.p6";if (my $fh = open $filename, :r) { for $fh.readline -> $line { say $line; }} else { say "Could not open '$filename'";}da este error:
osvaldo@vostro:/opt/src/rakudo$ ./perl6 examples/files/read_file.p6 Method 'readline' not found for invocant of class 'IO'Claro, la respuesta la encontre en irc:freenode#perl6
<osvaldo> hi everyone, i'm trying to run some examples and keep on getting this error message:
perl6 examples/files/read_file.p6
Method 'readline' not found for invocant of class 'IO'
any idea what might be happening?
<s1n> osvaldo: doesn't look like readline is in the spec anymore
<avar> I think it's .get now
ol .getline
<osvaldo> ah, ok, so the examples might just be too old then? s1n?
<-- jonathanturner has quit ()
<s1n> osvaldo: yes, the standard is a moving target
<osvaldo> s1n: thks!!
<JimmyZ> osvaldo: that mightp://tinyurl.com/oox6bm
en efecto, modifique el codigo del ejemplo
#!/usr/bin/perl6
use v6;
my $filename = "examples/files/read_file.p6";
if (my $fh = open $filename, :r) {
for $fh.get -> $line {
say $line;
}
} else {
say "Could not open '$filename'";
}
y funciona!
osvaldo@vostro:/opt/src/rakudo$ ./perl6 examples/files/read_file.p6
#!/usr/bin/perl6
pero claro, .get devuelve solo una linea hasta el input separator (newline en este caso). be not implemented .
<s1n> osvaldo: http://perlcabal.org/syn/S32/IO.html#IO%3A%3AReadable%3A%3AEncoded
<s1n> looks like avar is right
<lambdabot> Title: S32::IO, http://tinyurl.com/oox6bm
en efecto, modifique el codigo del ejemplo
#!/usr/bin/perl6
use v6;
my $filename = "examples/files/read_file.p6";
if (my $fh = open $filename, :r) {
for $fh.get -> $line {
say $line;
}
} else {
say "Could not open '$filename'";
}
y funciona!
osvaldo@vostro:/opt/src/rakudo$ ./perl6 examples/files/read_file.p6
#!/usr/bin/perl6
pero claro, .get devuelve solo una linea hasta el input separator (newline en este caso).
#!/usr/bin/perl6
use v6;
my $filename = "examples/files/read_file.p6";
if (my $fh = open $filename, :r) {
while !$fh.eof {
my $line = $fh.get;
say $line;
}
} else {
say "Could not open '$filename'";
}
(cortesia de victor)
Ahora si funciona como debe!