http://teachmeasp.net/Asp tutorials,Php tutorials,jsp tutorials,Html tutorials,cgi tutorials,xml tutorials, examples,articles, resources,source code, and links - RainbowSoft Studio Z-Blog 1.8 Spirit Build 80722zh-CNCopyright 2010 teachmeasp.net. Some Rights Reserved.Sun, 05 Sep 2010 19:12:51 +0800a@b.com (rain)http://teachmeasp.net/post/121.htmlMon, 26 Jan 2009 16:26:38 +0800http://teachmeasp.net/post/121.html
May divide with the require function the procedure Cheng Duoge the document and founds the function storehouse. For example, has in myfile.pl defines the good Perl function, available sentence require (“myfile.pl”); Contains in the procedure. When the Perl interpreter sees this sentence, in built-in ray variable @INC assigns in the table of contents seeks for document myfile.pl. If has found, in this document's sentence is carried out, otherwise program termination and output error information:

Can't find myfile.pl in @INC

As the subroutine call parameter, in the document the last expression's value becomes the returns value, the require function examined whether it is zero, if is zero terminates. For example the myfile.pl final sentence is:

print (“hello, world! n”);
$var = 0;]]>Perl Tutorialshttp://teachmeasp.net/post/121.html#commenthttp://teachmeasp.net/http://teachmeasp.net/feed.asp?cmt=121http://teachmeasp.net/cmd.asp?act=tb&id=121&key=db9b6e57a@b.com (rain)http://teachmeasp.net/post/120.htmlMon, 26 Jan 2009 16:25:53 +0800http://teachmeasp.net/post/120.html
First, module synopsis

Module (module) is Perl wraps (pachage). In Perl object based on to package in data item quotation. (quotation sees the xth chapter of quotation).

For details sees http://www.metronet.com/'s perlmod and perlobj.]]>Perl Tutorialshttp://teachmeasp.net/post/120.html#commenthttp://teachmeasp.net/http://teachmeasp.net/feed.asp?cmt=120http://teachmeasp.net/cmd.asp?act=tb&id=120&key=5b8c0be0a@b.com (rain)http://teachmeasp.net/post/119.htmlMon, 26 Jan 2009 16:25:17 +0800http://teachmeasp.net/post/119.html
The quotation is an indicator, may aim at the variable, the array, the Hasche table (also to be called connection array) even the subroutine. Pascal or the C programmer should to quotes (i.e. indicator) the concept be very familiar, the quotation is some value address, is decided to its use by the programmer and the language stipulation. In Perl, may be called the quotation the indicator, the two are general, non-difference. The quotation is very useful in the foundation complex data aspect.

In Perl5 two kind of quotation type for hard quotation and mark quotation. The mark quotation includes the variable name, it to movement when founds the variable name and locates is very useful, basically, the mark quotation looks like the filename or in the UNIX system's soft link. But quotes hardly looks like in filing system's hard link.]]>Perl Tutorialshttp://teachmeasp.net/post/119.html#commenthttp://teachmeasp.net/http://teachmeasp.net/feed.asp?cmt=119http://teachmeasp.net/cmd.asp?act=tb&id=119&key=32b94958a@b.com (rain)http://teachmeasp.net/post/118.htmlMon, 26 Jan 2009 16:24:31 +0800http://teachmeasp.net/post/118.html
First, document input/output function

This festival narrates from the document reads the information and to the file write information built-in storehouse function.

1st, basic I/O function
]]>Perl Tutorialshttp://teachmeasp.net/post/118.html#commenthttp://teachmeasp.net/http://teachmeasp.net/feed.asp?cmt=118http://teachmeasp.net/cmd.asp?act=tb&id=118&key=6b6ad0f7a@b.com (rain)http://teachmeasp.net/post/117.htmlMon, 26 Jan 2009 16:23:34 +0800http://teachmeasp.net/post/117.html
Second, demonstration printing form

The printing form's demonstration has two steps:

1st, $~ supposes the form which the system variable must use

2nd, transfer function write

For example:]]>Perl Tutorialshttp://teachmeasp.net/post/117.html#commenthttp://teachmeasp.net/http://teachmeasp.net/feed.asp?cmt=117http://teachmeasp.net/cmd.asp?act=tb&id=117&key=18f0e375a@b.com (rain)http://teachmeasp.net/post/116.htmlMon, 26 Jan 2009 16:23:06 +0800http://teachmeasp.net/post/116.html
Says in front in the ray variable, may through subscript visit element. For example, the following sentence visit array @array third element:

$scalar = $array[2];

Although the array is very useful, but they have a remarkable flaw, which element storage namely very difficult to remember any content. If we write the number of times which in a routine calculation some document the first letter capital letter's word appears, realizes with the array is quite difficult, the procedure code is as follows:
...]]>Perl Tutorialshttp://teachmeasp.net/post/116.html#commenthttp://teachmeasp.net/http://teachmeasp.net/feed.asp?cmt=116http://teachmeasp.net/cmd.asp?act=tb&id=116&key=607ddc80a@b.com (rain)http://teachmeasp.net/post/115.htmlMon, 26 Jan 2009 16:22:24 +0800http://teachmeasp.net/post/115.html
The subroutine namely carries out a special assignment section of separation code, it may cause the reduced redundant code, and causes the procedure legible. In PERL, the subroutine may appear in procedure any place. The definition method is:
...]]>Perl Tutorialshttp://teachmeasp.net/post/115.html#commenthttp://teachmeasp.net/http://teachmeasp.net/feed.asp?cmt=115http://teachmeasp.net/cmd.asp?act=tb&id=115&key=959e96a9a@b.com (rain)http://teachmeasp.net/post/114.htmlMon, 26 Jan 2009 16:21:48 +0800http://teachmeasp.net/post/114.html
if () {

}
elsif () {

}
…
else {

}

Second, circulation:

1st, while circulation

while () {

}

2nd, until circulation

until () {
]]>Perl Tutorialshttp://teachmeasp.net/post/114.html#commenthttp://teachmeasp.net/http://teachmeasp.net/feed.asp?cmt=114http://teachmeasp.net/cmd.asp?act=tb&id=114&key=e2b44574a@b.com (rain)http://teachmeasp.net/post/113.htmlMon, 26 Jan 2009 16:21:18 +0800http://teachmeasp.net/post/113.html
The pattern refers to the specific sequence character which seeks in the string of character, includes by the backlash: /def/ is pattern def. Its usage like union function split divides into the string of character with some pattern many words: @array = split (//, $line);

Second, match instruction character =~! ~

the =~ examination matches whether to succeed: $result = $var =~ /abc/; If has found this pattern in this string of character, then the returns non-zero value, namely true, does not match returns 0, namely false.! ~ is opposite.]]>Perl Tutorialshttp://teachmeasp.net/post/113.html#commenthttp://teachmeasp.net/http://teachmeasp.net/feed.asp?cmt=113http://teachmeasp.net/cmd.asp?act=tb&id=113&key=0f3032cea@b.com (rain)http://teachmeasp.net/post/112.htmlMon, 26 Jan 2009 16:20:53 +0800http://teachmeasp.net/post/112.html
The grammar is open (filevar, filename), filevar is the document handle, or is in the procedure uses for to represent some document the code number, filename is the filename, its way may be the relative way, may also be the absolute way.

open (FILE1, “file1”);
open (FILE1, “/u/jqpublic/file1”);
]]>Perl Tutorialshttp://teachmeasp.net/post/112.html#commenthttp://teachmeasp.net/http://teachmeasp.net/feed.asp?cmt=112http://teachmeasp.net/cmd.asp?act=tb&id=112&key=697876c6