[PerlChina] Re: 代码解读(GetOptions)

Wed, 09 Nov 2011 01:06:15 -0800 

为啥二楼的帖子是乱码呢？

On Nov 5, 11:04 pm, Dejian Zhao <[email protected]> wrote:
> Q2 ˣ в ˽ű ڲ $Fileformat ַ ˭ ˭
> һ ͬһ ڴ ַ
>
> perl -le 'my $a=1;my $b=\$a; $$b=5;print $a'
> 5 1
> в ൱ $b ű ڲ ı ൱ $a в ֵ
> ʱ ֱ ޸ ˽ű ڲ ֵ
>
> On 2011-11-6 10:56, Dejian Zhao wrote:
>
>
>
>
>
>
>
> > Q1,Q3,Q4 ˣ Q2 Dz ̫ ס
>
> > Q2 \$Fileformat ij $Fileformat Dz Եģ ᱨ ?Undefined argument
> > in option spec ڵ ˭ ˭ Ҿ Ӧ ǽű ڲ ı
> > $Fileformatȥ в Ӧ $FileformatӦ ָ в
> > fileformat ڴ ַ Ǵ Ͻ ƺ $Fileformat ã
> > в $Fileformat ѵ ˭ ˭ һ ʵ Dz ͬһ ڴ ַ
>
> > Q3: ԭ "fileformat:s"=>\$Fileformat д "fileformat:s"=>
> > \$fileformat ( Ȼǰ ǰ my $Fileformat Ϊmy $fileformat) ҿ
> > ű ж Сд Ҳ ѵ һ ĸ д Ͳ ⡣ Ǹ ϰ
> > ߵ ɣ Ҹ ϲ д "fileformat:s"=>\$fileformat
>
> > Q4: ˣ ӵġ @ARGV
>
> > On 2011-11-6 6:47, Michael Zeng wrote:
> >> perldoc GetOpt::Long Ӧ ܿ manual ܶ࣬ Ҽǵ
> >> ش
> >> 1 Ҳ鿴 perldoc Getopt::Long ֪ fileformat ʹ
> >> IJ Ӧ һ string Ȼ 󴫵ݵ ڲ ʱ $Fileformat
> >> ֵ ô û
> >> Ҫ ֵĶ ұ Լ IJ ű
> >> test.pl <http://test.pl> -fileformat AAA -cutoff BBB -verbose CCCC
> >> -help DDD ,
> >> AAA, BBB, CCC , DDD Զ ı 滻 4 Ӷ ȡ
> >> 2 Ϊʲô \$Fileformat һ reference أ д "fileformat:s"=&
> >> gt;$Fileformat ɲ ԣ Ϊʲô ʲô
> >> ã һ 㶼 ã һ ָ Ķ
> >> 3 ⣬Ϊʲô ʹ fileformat ڲ Ͳ ʹ
> >> $fileformat ǻ $Fileformat أ test.pl <http://test.pl>
> >> û ռ $fileformat
> >> ű һ ʼӦ ö my ($Fileformat,$Cutoff,$Verbose,$Help); ˣ
> >> Ȼ ֻ Щ
> >> 4 д˳ ʱ صIJ ڲ GetOptions
> >> ?û б ָ IJ @ARGV
> >> ǵã Ӧ ǣ
> >> ٶ࿴ manual
>
> >> 2011/11/6 Dejian Zhao <[email protected]
> >> <mailto:[email protected]>>
>
> >>     ڱ ˽ű (test.pl <http://test.pl/>) п ģ м
> >>     ⣬ϣ ˸ һ ¡ л
>
> >>     ==========test.pl <http://test.pl/>========
> >>     use strict;
> >>     use Getopt::Long;
>
> >>     my ($Fileformat,$Cutoff,$Verbose,$Help);
> >>     GetOptions(
> >>     "fileformat:s"=>\$Fileformat,
> >>     "cutoff:s"=>\$Cutoff,
> >>     "verbose"=>\$Verbose,
> >>     "help"=>\$Help
> >>     );
> >>     die `pod2text $0` if (@ARGV == 0 || $Help);
> >>     =========================
>
> >>     Ҫ GetOptions() IJ ֿ
> >>     "fileformat:s"=>\$FileformatΪ δ 롣
>
> >>     1 Ҳ鿴 perldoc Getopt::Long ֪ fileformat
> >>     ʹ õIJ Ӧ һ string Ȼ 󴫵ݵ ڲ ʱ $Fileformat
> >>     ֵ ô û
>
> >>     2 Ϊʲô \$Fileformat һ reference أ д
> >>     "fileformat:s"=>$Fileformat ԣ Ϊʲô ʲô
>
> >>     3 ⣬Ϊʲô ʹ fileformat ڲ Ͳ ʹ
> >>     $fileformat ǻ $Fileformat أ test.pl <http://test.pl
> >>     /> û ռ $fileformat
>
> >>     4 д˳ ʱ صIJ ڲ GetOptions
> >>     ?û б ָ IJ @ARGV

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