05-01-2008
O'Reilly "Mastering algorithms with C". Good source of exercises and examples.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi:
Does anybody know how to return hash tables created in a function?
I have something like so:
%a_hash_table = build_a_hash_table();
sub build_a_hash_table
{
my(%hash_table);
#some code to build hash table: "%hash_table" for e.g
return %hash_table;
}
----> This... (1 Reply)
Discussion started by: mirzabhai
1 Replies
2. UNIX for Dummies Questions & Answers
Hi:
How do I pass a hash table down to a subroutine along with some other variables?
For example, I have say a subroutine play_with_hash:
sub play_with_hash
{
my( $var1, $var2, %my_hash ) = @_;
#do stuff with %my_hash
...........
}
Then I want to call the subroutine... (1 Reply)
Discussion started by: mirzabhai
1 Replies
3. Programming
I want to store a bunch of pthread_t types in a hash table, but since pthread_t is not an integer value, I cannot hash it. I was hoping to store a unique nonzero as key 0 for each thread with thread-specific data ala pthread_key_create/pthread_setspecific, but but as it turns out only the first... (2 Replies)
Discussion started by: Corona688
2 Replies
4. Shell Programming and Scripting
I am trying to transpose tables listed in the format into format. Any help would be greatly appreciated.
Input:
test_data_1
1 2 90%
4 3 91%
5 4 90%
6 5 90%
9 6 90%
test_data_2
3 5 92%
5 4 92%
7 3 93%
9 2 92%
1 1 92%
...
Output:... (7 Replies)
Discussion started by: justthisguy
7 Replies
5. Shell Programming and Scripting
I have a script with dynamic hash of hashes , and I want to print the entire hash (with all other hashes).
Itried to do it recursively by checking if the current key is a hash and if yes call the current function again with refference to the sub hash.
Most of the printing seems to be OK but in... (1 Reply)
Discussion started by: Alalush
1 Replies
6. HP-UX
how can I find cpu usage memory usage swap usage and
I want to know CPU usage above X% and contiue Y times and memory usage above X % and contiue Y times
my final destination is monitor process
logical volume usage above X % and number of Logical voluage above
can I not to... (3 Replies)
Discussion started by: alert0919
3 Replies
7. Programming
How hash tables are used to quickly locate a data record? (4 Replies)
Discussion started by: rupeshkp728
4 Replies
8. UNIX for Dummies Questions & Answers
Hello,
I want to know how hash tables for buffers were implemented in Unix and now, in linux how they are implemented ?
I am aware of what hashing is..also quite familiar with Unix/Linux.
Special case is how device numbers comes into picture..I am curious !
If possible consider some... (0 Replies)
Discussion started by: istevan
0 Replies
9. Shell Programming and Scripting
Hi,
I have an hashes of hash, where hash is dynamic, it can be n number of hash. i need to compare data_count values of all .
my %result (
$abc => {
'data_count' => '10',
'ID' => 'ABC122',
}
$def => {
'data_count' => '20',
'ID' => 'defASe',
... (1 Reply)
Discussion started by: asak
1 Replies
10. Shell Programming and Scripting
Hello gurus, Iam trying to parse following BibTex file (bibliography.bib):
@book{Lee2000a,
abstract = {Abstract goes here},
author = {Lee, Wenke and Stolfo, Salvatore J},
title = {{Data mining approaches for intrusion detection}},
year = {2000}
}
@article{Forrest1996,
abstract =... (0 Replies)
Discussion started by: wakatana
0 Replies
LEARN ABOUT DEBIAN
petal::hash::test
Petal::Hash::Test(3pm) User Contributed Perl Documentation Petal::Hash::Test(3pm)
NAME
Petal::Hash::Test - Test and Tutorial Petal modifier
SUMMARY
Petal modifiers are snippets of code which are used to extend the expression engine capabilities. This test shows how to write your own
modifiers.
API
The modifier API is very, very simple. It consists of two elements:
The package name
Your modifier should be called Petal::Hash::<SomeThing>, where <SomeThing> is the name that you want to give to your modifier.
For example, this modifier is called Petal::Hash::Test. Petal will automatically pick it the module up and assign it the 'test:' prefix.
package Petal::Hash::Test;
use warnings;
use strict;
The method $class->process ($hash, $argument);
This class method will define the modifier in itself.
* $class is the package name of your modifier (which might come in handy if you're subclassing a modifier),
* $hash is the execution context, i.e. the objects and data which will 'fill' your template,
* $argument is whatever was after your modifier's prefix. For example, for the expression 'test:foo bar', $argument would be 'foo bar'.
In this test / tutorial we're going to write a modifier which uppercases a Petal expression.
sub process
{
my $class = shift;
my $hash = shift;
my $argument = shift;
return uc ($hash->get ($argument));
}
1;
__END__
And that's it! Simple!
AUTHOR
Jean-Michel Hiver
This module is redistributed under the same license as Perl itself.
SEE ALSO
The template hash module:
Petal::Hash
perl v5.12.4 2011-08-25 Petal::Hash::Test(3pm)