digitalmars.D - Reading input lines
- Bill Lear (18/18) Jan 22 2007 I am trying to read lines from stdin and echo them to stdout.
- Jarrett Billingsley (4/18) Jan 22 2007 Do you? I took out the null check and it works fine, unless you're gett...
- Bill Lear (9/32) Jan 23 2007 Yes, this is under Linux, dmd version 1.00. If I run the program,
- Jarrett Billingsley (5/8) Jan 23 2007 Hmm, that doesn't happen under Windows. I guess it's a platform-specifi...
- Thomas Kuehne (10/18) Jan 24 2007 -----BEGIN PGP SIGNED MESSAGE-----
I am trying to read lines from stdin and echo them to stdout.
I have come up with this:
import std.stdio;
import std.cstream;
import std.string;
void main () {
while (!din.eof()) {
char[] line = din.readLine();
if (line == null) continue;
writefln("%s", line);
}
}
but am confused why I would need to check for null. Is there
a better way to do this?
Bill
--
r * e * * o * y * a * c * m
* a * l * z * p * r * . * o *
Jan 22 2007
"Bill Lear" <rael see.sig.com> wrote in message
news:m33b621rvp.fsf pppp.zopyra.com...
I am trying to read lines from stdin and echo them to stdout.
I have come up with this:
import std.stdio;
import std.cstream;
import std.string;
void main () {
while (!din.eof()) {
char[] line = din.readLine();
if (line == null) continue;
writefln("%s", line);
}
}
but am confused why I would need to check for null. Is there
a better way to do this?
Do you? I took out the null check and it works fine, unless you're getting
errors on Linux or something.
Jan 22 2007
"Jarrett Billingsley" <kb3ctd2 yahoo.com> writes:"Bill Lear" <rael see.sig.com> wrote in message news:m33b621rvp.fsf pppp.zopyra.com...Yes, this is under Linux, dmd version 1.00. If I run the program, with the text of the program as input, without the null check, it prints out an additional blank line for every line in the file. Bill -- r a e l z o p y r a . c o mI am trying to read lines from stdin and echo them to stdout. I have come up with this: import std.stdio; import std.cstream; import std.string; void main () { while (!din.eof()) { char[] line = din.readLine(); if (line == null) continue; writefln("%s", line); } } but am confused why I would need to check for null. Is there a better way to do this?Do you? I took out the null check and it works fine, unless you're getting errors on Linux or something.
Jan 23 2007
"Bill Lear" <rael see.sig.com> wrote in message news:m3hcuhzkpe.fsf lisa.zopyra.com...Yes, this is under Linux, dmd version 1.00. If I run the program, with the text of the program as input, without the null check, it prints out an additional blank line for every line in the file.Hmm, that doesn't happen under Windows. I guess it's a platform-specific issue. Might want to post it in Bugzilla (I can't find any issues about it there already).
Jan 23 2007
Thomas Kuehne <thomas-dloop kuehne.cn> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Jarrett Billingsley schrieb am 2007-01-24:"Bill Lear" <rael see.sig.com> wrote in message news:m3hcuhzkpe.fsf lisa.zopyra.com...http://d.puremagic.com/issues/show_bug.cgi?id=881 Thomas -----BEGIN PGP SIGNATURE----- iD8DBQFFtx+CLK5blCcjpWoRAolCAJ46cb6NwuO5f37DNuZkkjIQFhxj5gCgiIA7 TIJ3z+QLpljw7OfvuEg223Y= =iV/P -----END PGP SIGNATURE-----Yes, this is under Linux, dmd version 1.00. If I run the program, with the text of the program as input, without the null check, it prints out an additional blank line for every line in the file.Hmm, that doesn't happen under Windows. I guess it's a platform-specific issue. Might want to post it in Bugzilla (I can't find any issues about it there already).
Jan 24 2007