14 lines
445 B
Perl
14 lines
445 B
Perl
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#!/usr/bin/perl
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#
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$txt="1234ab56";
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$txt =~ /\d\d/g;
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print "matched $&: ",pos $txt,"\n";
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$txt =~ /\d\d/g;
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print "matched $&: ",pos $txt,"\n";
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$txt =~ /\G\d/gc; # 匹配失败，指针卡在原地
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print "matched $&: ",pos $txt,"\n";
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$txt =~ /\G\d/gc; # 匹配失败，指针继续卡在原地
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print "matched $&: ",pos $txt,"\n";
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$txt =~ /\G\d/gc; # 匹配失败，指针继续卡在原地
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print "matched $&: ",pos $txt,"\n";
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