crecode.com

Visual Studio .NET QR Lists of Lists in .NET Printer PDF-417 2d barcode in .NET Lists of Lists




How to generate, print barcode using .NET, Java sdk library control with example project source code free download:
Lists of Lists generate, create none none with none projectsavapose.com creating qr code c# A list may contain another none for none list or set of lists, most commonly used to create a multidimensional array. A reference is assigned an anonymous array containing another anonymous array in Examples 13.7 and 13.

8. Example 13.7.

. ASP.NET and Visual Web Developer 1 2 3. #!/bin/perl # Program to de none for none monstrate a reference to a list with a # nested list my $arrays = [ "1", "2", "3", [ "red", "blue", "green" ]]; for($i=0;$i<3;$i++){ print $arrays->[$i],"\n"; } for($i=0;$i<3;$i++){ print $arrays->[3]->[$i],"\n"; } print "@{$arrays}\n"; print "--@{$arrays->[3]}--", "\n";. 4 5 6 7. (Output) 3 1 2 3 5 red blue none for none green 6 7 1 2 3 ARRAY(0x8a6f134) --red blue green--. Explanation 1. $arrays is a reference ( none for none pointer) to a four-element array that contains another anonymous three-element array whose elements are red, blue, and green..

2. The for loop is used to get the values of the first array, consisting of elements 1, 2, and 3. 3. The arrow operator is used here to dereference $arrays. 4. The second for loop is u sed to iterate through the nested anonymous array. Since this array is the fourth element of the first array, starting at subscript 0, the first index is 3 and the second index references each of its elements.

. 5. Each of the elements (red, blue, green) of the nested anonymous array is printed. 6. By prepending the @ symb ol to the block containing the reference, the elements of the anonymous array are retrieved and printed. The third element of the array is a reference (pointer) to another anonymous hash.

Its address is printed.. 7. The second nested array is dereferenced and printed. Example 13.8. Code View: (The Script) #!/ none none bin/perl # Program to demonstrate a pointer to a two-dimensional array. 1 my $matrix = [ [ 0, 2, 4 ], [ 4, 1, 32 ], [ 12, 15, 17 ] ] ; 2 3 4 5 6 print "Row 3 column 2 is $matrix->[2]->[1].\n";.

print "Dereferencing with t wo loops.\n"; for($x=0;$x<3;$x++){ for($y=0;$y<3;$y++){ print "$matrix->[$x]->[$y] "; } print "\n\n"; } print "\n"; 7 print "Derefencing with one loop.\n"; 8 for($i = 0; $i < 3; $i++){ 9 print "@{$matrix->[$i]}", "\n\n"; } 10 $p=\$matrix; # Reference to a reference 11 print "Dereferencing a reference to reference.

\n" 12 print ${$p}->[1][2], "\n"; (Output) 2 Row 3 column 2 is 15. 3 Dereferencing with two loops. 6 0 2 4 4 1 32 12 15 17 7 9 Dereferencing with one loop.

0 2 4 4 1 32 12 15 17 Dereferencing a reference to reference. 32. 11 12. Explanation The reference (pointer) $ma none none trix is assigned an anonymous array of three anonymous arrays; that is, a two-dimensional array (list of lists). The arrow operator is used to access the first element of the array. An arrow is implied between adjacent subscript brackets and is not needed.

It could have been written as $matrix >[2][1]. The outer for loop is entered. This will iterate through the rows of the array.

The inner for loop is entered. This loop iterates through the columns of the array. Each element of the two-dimensional array is printed via the reference (pointer).

This time, only one for loop will be used to print out the contents of the matrix. The block format is used to dereference the pointer. All elements of each list are printed.

. 4 5 6 8 9. 10 $p is a reference assign none none ed another reference, $matrix. This is more commonly called a pointer to a pointer. 12 If you want to access the array elements that is, dereference $p an additional dollar sign is needed, one for p and one for matrix.

The arrow is implied between the adjacent subscripts; for example, this line could have been written $p >[1] >[2].. Array of Hashes A list may contain a hash o none none r a set of hashes. In Example 13.9, a reference is assigned an anonymous array containing two anonymous hashes.

. Example 13.9. Code View: 1 my $petref = [. { "name" "type" "owner" }, { "name" "type" "owner" }. => "Rover", => "dog", none none => "Mr. Jones", => "Sylvester", => "cat", => "Mrs. Black",.

4 5 6 7. print "The first pet"s name none for none is $petref->[0]->{name}.\n"; print "Printing an array of hashes.\n"; for($i=0; $i<2; $i++){ while(($key,$value)=each %{$petref->[$i]} ){ print "$key -- $value\n"; } print "\n"; } print "Adding a hash to the array.

\n"; push @{$petref},{ "owner"=>"Mrs. Crow", "name"=>"Tweety", "type"=>"bird" }; while(($key,$value)=each %{$petref->[2]}){. 10 }. print "$key -- $value\n";. (Output) 4 The first pet"s name is Rover. Printing an array of hashes. 7 owner -- Mr.

Jones type -- dog name -- Rover owner -- Mrs. Black type -- cat name -- Sylvester Adding a hash to the array. type -- bird owner -- Mrs.

Crow name -- Tweety.
Copyright © crecode.com . All rights reserved.