Problem using Getopts package

[Harshal borade]

I am getting errors when I try to get command line
parameters.
For example this small code doesn't work on my
machine.
#########################################
#!/usr/bin/perl -w
use 'Getopt::Std';

getopt('de');
print "U have used d ", if $opt_d;
print "U have used e ", if $opt_e;
#########################################


The interpreter points out an error on the line "use
'Getopt::Std'"

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[Randy W. Sims]

On 02/11/04 06:33, Harshal Borade wrote:

> I am getting errors when I try to get command line
> parameters.
> For example this small code doesn't work on my
> machine.
> #########################################
> #!/usr/bin/perl -w
> use 'Getopt::Std';
>
> getopt('de');
> print "U have used d ", if $opt_d;
> print "U have used e ", if $opt_e;
> #########################################
>
>
> The interpreter points out an error on the line "use
> 'Getopt::Std'"

You do not need to quote the module name in a use statement:

use Getopt::Std;

Regards,
Randy.

[Randy W. Sims]

On 2/11/2004 9:23 AM, Wiggins d Anconia wrote:

> Actually we can emphasize that 'need' a bit to a 'cannot'. 'use' *must*
> take a bareword.

unless it's in an eval ;-)

perl -Mstrict -we "my $m='Cwd';eval qq(use $m);print cwd();"

> perldoc -f use
>
> [url]http://danconia.org[/url]
>

[R. Joseph Newton]

"Randy W. Sims" wrote:

> On 2/11/2004 9:23 AM, Wiggins d Anconia wrote:
>

> > Actually we can emphasize that 'need' a bit to a 'cannot'. 'use' *must*
> > take a bareword.

>
> unless it's in an eval ;-)
>
> perl -Mstrict -we "my $m='Cwd';eval qq(use $m);print cwd();"

Not really. In the example above, the module name is not quoted. The string
constant to be substituted into the eval'ed expression is quoted:
my $m='Cwd'
as is necessay for a string assignment to a scalar.
The expression as a whole is double-quoted, as is required for nterpolated
strings offered for evaluation.
eval qq(use $m);
The module name, though, is not separately quoted. This is actually a simple
misuse of eval in void context for its side effects .The actual use statement
that gets processed is not quoted in any way.

Joseph