blocks|key|860820|text|perl+-ane+'print+unless+$a{$F[0]}%2B%2B+'+inputfile|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|860821|希望这能起作用|unstyled|860822|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|J|8|@]|9|@]|A|$]]|$1|G|3|-4|5|F|7|K|8|@]|9|@]|A|$]]]|H|$]]

<pre><code>perl -ane 'print unless $a{$F[0]}++ ' inputfile
</code></pre>

<p>hope this works +</p>


blocks|key|860780|text|@seen{@array}+=+();
@out+=+grep+{+(($w)=split;+!($seen{$w}%2B%2B)+}+@in;|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|860781|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>@seen{@array} = ();
@out = grep { (($w)=split; !($seen{$w}++) } @in;
</code></pre>


blocks|key|1682889|text|如何创建另一个数组来指示该名称是否已被使用？然后，第一次使用Jim读取line时，将此数组中的变量设置为已用，并将其写入输出。如果它在过去已经被使用过，那么什么也不做。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1682890|@array+=(john,jim,rocky,hosanna);
@used+=(0,0,0,0);|code-block|syntax|javascript|1682891|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

<p>What about making another array which indicates if the name was already used? Then, first time you read line with Jim, set variable in this array as used and write in into output. If it was already used in the past, do nothing.</p>

<pre><code>@array =(john,jim,rocky,hosanna);
@used =(0,0,0,0);
</code></pre>


blocks|key|4897846|text|单行道。我将数组数据保存到散列中，并在输入文件中找到一个条目时将其删除。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4897847|script.pl的内容|offset|length|style|CODE|4897848|use+warnings;
use+strict;

##+Input+names+to+search.
my+@array+=+qw/+john+jim+rocky+hosanna/;

##+Save+names+to+a+hash.+This+way+they+are+easier+to+find+out.
my+%25names+=+map+{+$_+=>+1+}+@array;

##+Read+file+line+by+line.
while+(+<>+)+{+

++++##+Avoid+blank+lines.
++++next+if+m/\A\s*\Z/;

++++##+Split+line+in+fields.
++++my+@f+=+split;

++++##+Count+number+of+names+in+hash.
++++my+$num_entries+=+scalar+keys+%25names;

++++##+Remove+words+of+hash+found+in+line.
++++for+(+@f+)+{+
++++++++delete+$names{+$_+};
++++}+++

++++##+If+now+there+are+less+names,+it+means+that+line+had+any+of
++++##+them,+so+print+line.
++++if+(+scalar+keys+%25names+<+$num_entries+)+{+
++++++++printf+qq[%25s\n],+$_;+
++++}+++

++++##+If+hash+is+empty,+there+are+no+lines+left+to+print,+so+exit+of
++++##+loop+without+checking+more+lines.
++++last+if+scalar+keys+%25names+==+0;
}|code-block|syntax|javascript|4897849|命令：|4897850|perl+script.pl+infile|4897851|输出：|4897852|john+wears+blue+shirt+

hosanna+knows+drawing

george+and+jim+went+to+europe

rocky+went+to+swimming|4897853|entityMap^0|0|0|9|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|X|8|@$D|Y|E|Z|F|G]]|9|@]|A|$]]|$1|H|3|I|5|J|7|10|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|11|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|12|8|@]|9|@]|A|$K|L]]|$1|Q|3|R|5|6|7|13|8|@]|9|@]|A|$]]|$1|S|3|T|5|J|7|14|8|@]|9|@]|A|$K|L]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

<p>One way. I save array data to a hash and delete an entry when found in the input file.</p>

<p>Content of <code>script.pl</code>:</p>

<pre><code>use warnings;
use strict;

## Input names to search.
my @array = qw/ john jim rocky hosanna/;

## Save names to a hash. This way they are easier to find out.
my %names = map { $_ =&gt; 1 } @array;

## Read file line by line.
while ( &lt;&gt; ) { 

    ## Avoid blank lines.
    next if m/\A\s*\Z/;

    ## Split line in fields.
    my @f = split;

    ## Count number of names in hash.
    my $num_entries = scalar keys %names;

    ## Remove words of hash found in line.
    for ( @f ) { 
        delete $names{ $_ };
    }   

    ## If now there are less names, it means that line had any of
    ## them, so print line.
    if ( scalar keys %names &lt; $num_entries ) { 
        printf qq[%s\n], $_; 
    }   

    ## If hash is empty, there are no lines left to print, so exit of
    ## loop without checking more lines.
    last if scalar keys %names == 0;
}
</code></pre>

<p>Command:</p>

<pre><code>perl script.pl infile
</code></pre>

<p>Output:</p>

<pre><code>john wears blue shirt 

hosanna knows drawing

george and jim went to europe

rocky went to swimming
</code></pre>


<p>I have an array that contains elements like:</p>

<pre><code>@array = qw/ john jim rocky hosanna/;
</code></pre>

<h3>INPUT FILE:</h3>

<pre><code>john wears blue shirt 

hosanna knows drawing

george and jim went to europe

john went to swimming

jim wears yellow shirt

rocky went to swimming

rocky learns painting

hosanna learns painting
</code></pre>

<h3>REQUIRED OUTPUT:</h3>

<pre><code>john wears blue shirt 

hosanna knows drawing

george and jim went to europe

rocky went to swimming
</code></pre>

<p>so, I need to have only first occurrences lines.</p>


Remove lines that contains repeated regular expression in perl

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个包含如下元素的数组：@array = qw/ john jim rocky hosanna/;输入文件：john wears blue shirt hosanna knows drawinggeorge and jim went to europejohn went to swimmingjim wears yellow shirtrocky went to swimmingrocky l

问删除perl中包含重复正则表达式的行
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