}else{print"two arrays are not equal\n"; } } 3.使用 模块 #!/usr/bin/perlusestrict;useArray::Compare;my@array1=1..10;my@array2=1..11;my@array3=1..10;print"compare array1 and array2\n";&check(\@array1,\@array2);print"compare array1 and array3\n";&check(\@array1,\@arr...
Q #17) Explain the various functions/directives in Perl that allow you to include/import a module. Also, state the differences between them. Answer: There are two directives that we use in Perl to include modules or packages. “use”:Use directive is used to include modules with .pm exten...
How to compare two strings case insensitive3.7.4. How to convert all the array elements in lowercase3.8. Perl lcfirst function3.8.1. The syntax forms3.8.2. How to convert the first character of a string in lowercase3.9. Perl length functionCopyright 漏 misc-perl-info.com3.9.1. The syntax...
This comparison function is called each time sort has to compare two values. The values to compare are loaded into the special package variables $a and $b, which are automatically localized. The comparison function should return a negative number if $a ought to appear before $b in the ...
compare(1) composite(1) compress(1) config.guess(1) config.sub(1) config_data(1) conflict(1) conjure(1) constype(1) continue(1) convert(1) convmv(1) corelist(1) cp(1) cp(1g) cpack(1) cpan(1) cpan2dist(1) cpanp(1) cpio(1) cpp(1) cpp(1) cputrack(1) crle(1) cronta...
my $comparison = \&compare_lengths; my @sorted = sort $comparison @unsorted; The second option avoids the use of a bareword, but the result is longer. Unfortunately, Perl's parserdoes notunderstand the single-line version due to the special parsing ofsort; you cannot use an arbitrary expre...
compare(1) composite(1) compress(1) config.guess(1) config.sub(1) config_data(1) conflict(1) conjure(1) constype(1) continue(1) convert(1) convmv(1) corelist(1) cp(1) cp(1g) cpack(1) cpan(1) cpan2dist(1) cpanp(1) cpio(1) cpp(1) cpp(1) cputrack(1) crle(1) cronta...
Using a string or number as a reference produces a symbolic reference, as explained above. Using a reference as a number produces an integer representing its storage location in memory. The only useful thing to be done with this is to compare two references numerically to see whether they refe...
Awk Perl ARGC scalar @ARGV (compare with $#ARGV) ARGV[0] $0 FILENAME $ARGV FNR $. - something FS (whatever you like) NF $#Fld, or some such NR $. OFMT $# OFS $, ORS $\ RLENGTH length($&) RS $/ RSTART length($`) SUBSEP $; ...
This will get two values (and a description) and compare the two with smart matching printing the result. So I can now supply two values two this function and see how are the respective variables compared. So "Foo" ~~ "Bar" is the same as "Foo" eq "Bar", (this is called Any ...