Beginning Perl Third Edition PHẦN 2 pdf
Beginning Perl Third Edition PHẦN 2 pdf
... to the number ( 21 . 42
is converted to 21 . 42) .
• Leading whitespace is ignored (“ 12 is converted to 12) .
• Trailing nonnumerics are discarded (“1 2perl is converted to 12) .
• Strings that ... backslash has, and so we escape it:
#!/usr/bin /perl
# quotes2.pl
use warnings;
CHAPTER 2 ■ SCALARS
22
#!/usr/bin /perl
# octhex2.pl
use warnings;
print hex("...
Beginning Perl Third Edition PHẦN 8 pdf
... OBJECT-ORIENTED PERL
29 9
package Person2;
# Person2.pm
# Class for storing data about a person
use strict;
sub new {
my $self = {};
bless $self, "Person2";
return ...
1;
Now you can use your Person2 class to create an object:
#!/usr/bin /perl
# person2.pl
use warnings;
use strict;
use Person2;
my $person = Person2->new();
which should ex...
Beginning JavaScript Third Edition phần 1 pdf
... and Variables 21
Types of Data in JavaScript 21
Numerical Data 22
Text Data 22
Boolean Data 24
Variables — Storing Data in Memory 24
Declaring Variables and Giving Them Values 25
Assigning Variables ... what type of data a variable can hold.
25
Chapter 2: Data Types and Variables
05_051511 ch 02. qxp 4/13/07 6:19 PM Page 25
Beginning JavaScript
®
, Third Edition
Publis...
Beginning JavaScript Third Edition phần 2 docx
... element with index
2
inside the personnel array to create a new array.
personnel [2] = new Array();
personnel [2] [0] = “Name2”;
personnel [2] [1] = “Age2”;
personnel [2] [2] = “Address2”;
The array now ... array now looks like this:
Index 0 1 2
0 Name0 Name1 Name2
1 Age0 Age1 Age2
2 Address0 Address1 Address2
57
Chapter 2: Data Types and Variables
05_051511 ch 02. qxp 4/13/07 6:19 PM...
Beginning JavaScript Third Edition phần 3 pdf
... new
CustomerBooking( 123 4, “Robert Smith”,”Raging Bull”, 25 July 20 04 18 :20 ”);
var secondBooking = new
CustomerBooking( 124 4, “Arnold Palmer”,”Toy Story”, 27 July 20 04 20 :15”);
Here, as with ... Browser
08_051511 ch05.qxp 4/13/07 6 :25 PM Page 180
“Never Say Never”, 27 July 20 09 17:55”);
londonOdeon.addBooking( 324 , “Beci Smith”,
“Shrek”, 29 July 20 09 20 :15”);
document.writ...
Beginning JavaScript Third Edition phần 4 pdf
... language=JavaScript>
writeOptions(1970 ,20 20);
</script>
</select>
22 4
Chapter 6: HTML Forms — Interacting with the User
09_051511 ch06.qxp 4/13/07 6 :20 PM Page 22 4
Using the remove() method, ... of 25 0 pixels. You want the new window to open with the
test2.htm page inside.
var newWindow;
newWindow = window.open(“test2.htm”,”myWindow”,”width =25 0,height =25 0”);
You ca...
Beginning Perl Third Edition PHẦN 1 potx
... number 25 5, and accordingly, we get the following output:
$ perl goodnums.pl
25 5
25 5
25 5
25 5
$
■ CONTENTS
CONTENTS
vi
Operators 22
Numeric Operators 22
String Operators 32
Operators ... glob() 21 7
Reading Directories 22 0
Functions to Work with Files and Directories 22 1
Executing External Programs 22 5
The system() Function 22 5
■ CONTENTS
xv
C...
Beginning Perl Third Edition PHẦN 3 docx
...
the following output:
$ perl looplabel1.pl
1 ** 1 = 1
1 ** 1 = 1
2 ** 1 = 2
2 ** 2 = 4
3 ** 1 = 3
3 ** 2 = 9
4 ** 1 = 4
4 ** 2 = 16
5 ** 1 = 5
5 ** 2 = 25
$
To make the last statement ... $scalar1\n";
my @array2;
my $scalar2;
@array2 = qw(Winter Spring Summer Fall);
$scalar2 = @array2;
print "Array 2 is @array2\nScalar 2 is $scalar2\n";...
Beginning Perl Third Edition PHẦN 4 pot
... is better written as seconds2.pl:
#!/usr/bin /perl
# seconds2.pl
use warnings;
use strict;
my ($hours, $minutes, $seconds) = secs2hms(3 723 );
print "3 723 seconds is $hours hours, ... look like a real utility:
$ perl hello2.pl -v
Beginning Perl& apos;s "Hello, world." version 2. 0
Hello, world.
$
The first thing we see in hello2.pl is the definition...
Beginning Perl Third Edition PHẦN 5 potx
... to give it) as the third argument. For instance,
let’s write a program to sort either the file on the command line or standard input (sort2.pl):
#!/usr/bin /perl
# sort2.pl
use warnings; ... $passwd2\n";
$ perl join.pl
Login name : kake
User ID : 10018
Home directory : /home/kake
Original password : kake:x:10018:10 020 ::/home/kake:/bin/bash
New password : kake#x#100...
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