?????? ?б?????????

????б?
????????--?б?????
 1?????????
 2????????е???????????滻
 3???б??Χ
 4??????????
 5???б?/????????
 6????????
 7???й?????????

????б?
 ?б???????????????????е??????????κ??????????????磺(1, 5.3 , "hello" , 2)?????б??()??
 ?????????????????б?(?磺(43.2) )??????????(????43.2 )???????????????????????????
 ?б?????
 (17, $var, "a string")
 (17, 26 << 2)
 (17, $var1 + $var2)
 ($value, "The answer is $value")
????????--?б?????
 ?б??????????????У?????????????????????????"@"??????磺
 @array = (1, 2, 3);
 ???
(1)????????????????????б??()??
(2)???PERL??@??$????????????????????????????????????????????????????????????磺
 $var = 1;
 @var = (11, 27.1 , "a string");
 ?????????????????????????
1?????????
 .???????е??????±??????????????±??0????????????????????????????NULL??????????????????С?????????????????????????????е??????NULL???磺
 @array = (1, 2, 3, 4);
 $scalar = $array[0];
 $array[3] = 5; # now @array is (1,2,3,5)
 $scalar = $array[4]; # now $scalar = null;
 $array[6] = 17; # now @array is (1,2,3,5,"","",17)
 .????俽??
 @result = @original;
 .????????б???
 @list1 = (2, 3, 4);
 @list2 = (1, @list1, 5); # @list2 = (1, 2, 3, 4, 5)
 .??????????????
 (1) @array = (5, 7, 11);
 ($var1, $var2) = @array; # $var1 = 5, $var2 = 7, 11??????
 (2) @array = (5, 7);
 ($var1, $var2, $var3) = @array; # $var1 = 5, $var2 = 7, $var3 ="" (null)
 .????????(STDIN)?????????
 $var = <STDIN>;
 @array = <STDIN>; # ^D?????????????
2 ????????е???????????滻
 "$var[0]" ?????@var??????????
 "$var\[0]" ?????"["??壬?????"$var". "[0]"??$var???????滻??[0]???????
 "${var}[0]" ??????"$var" ."[0]"??
 "$\{var}"?????????????????滻??????????????${var}.
3???б??Χ??
 (1..10) = (1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
 (2, 5..7, 11) = (2, 5, 6, 7, 11)
 (3..3) = (3)
 .???????
 (2.1..5.3) = (2.1, 3.1 ,4.1, 5.1)
 (4.5..1.6) = ()
 .?????????
 ("aaa".."aad") = ("aaa","aab", "aac", "aad")
 @day_of_month = ("01".."31")
 .??????????????
 ($var1..$var2+5)
 .С?????
 $fred = "Fred";
 print (("Hello, " . $fred . "!\n") x 2);
 ???????
 Hello, Fred!
 Hello, Fred!
4????????????
(1) @array = (1, 2, 3);
 print (@array, "\n");
 ??????
 123
(2) @array = (1, 2, 3);
 print ("@array\n");
 ??????
 1 2 3
5???б?/????????
 ??????????????????????????????????PERL????????????
 @array = (1, 2, 3);
 $scalar = @array; # $scalar = 3,??@array?????
 ($scalar) = @array; # $scalar = 1,??@array??????????
 ??????????????????????????±???
 $count = 1;
 while ($count <= @array) {
 print ("element $count: $array[$count-1]\n");
 $count++;
 }
6????????
 @array = (1, 2, 3, 4, 5);
 @subarray = @array[0,1]; # @subarray = (1, 2)
 @subarray2 = @array[1..3]; # @subarray2 = (2,3,4)
 @array[0,1] = ("string", 46); # @array =("string",46,3,4,5) now
 @array[0..3] = (11, 22, 33, 44); # @array = (11,22,33,44,5) now
 @array[1,2,3] = @array[3,2,4]; # @array = (11,44,33,5,5) now
 @array[0..2] = @array[3,4]; # @array = (5,5,"",5,5) now
 ?????????????????????????
 @array[1,2] = @array[2,1];
7???й?????????
(1)sort--????????????
 @array = ("this", "is", "a","test");
 @array2 = sort(@array); # @array2 = ("a","is", "test", "this")
 @array = (70, 100, 8);
 @array = sort(@array); # @array = (100, 70, 8) now
( 2)reverse--???????
 @array2 = reverse(@array);
 @array2 = reverse sort (@array);
(3)chop--?????β
 chop???????????STDIN??????????????????????????--???з???????????????????????????????????????????????
 @list = ("rabbit", "12345","quartz");
 chop (@list); # @list = ("rabbi", "1234","quart") now
( 4)join/split--????/???
 join??????????????????????м??????????????????????????顣
 $string = join(" ", "this", "is","a", "string"); # ????"this is a string"
 @list = ("words","and");
 $string = join("::", @list, "colons"); #????"words::and::colons"
 @array = split(/::/,$string); # @array = ("words","and", "colons") now

????? ????? Perl???

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