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Full Discussion: Confusion in hash
Top Forums Shell Programming and Scripting Confusion in hash Post 302850987 by scriptscript on Friday 6th of September 2013 07:31:16 AM
Old 09-06-2013
Confusion in hash

Hi folks,

If a declare a direct hash , then the hash element works fine.
Code:
my %test = ("test",1);
print %test;
print "\n";

Here in the above, the name of the hash is predeclared...

Suppose now I need to create the hash elements dynamically in the for loop.

Code:
$test="hash";
my ${$test}=("test",1);  ## assuming $test will be replaced by hash

But receiving an error message as below..

an't declare scalar dereference in "my" at hashtest.pl line 3, near "}="
xecution of hashtest.pl aborted due to compilation errors.

I have a requirement in which I need to create the hash elements in the loop based on some variables in array and I'm using "use strict" and "use warning pragmas" .

Could anyone please let me know how to create hash variables from the elements of array?

Thanks in advance ....

Last edited by scriptscript; 09-06-2013 at 08:41 AM..
 

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AUTH2TABLE(3)						     AUT STRUCTURE DEFINITIONS						     AUTH2TABLE(3)

NAME
auth2table - hash table structure DESCRIPTION
The auth2table structure is used to describe an hash table with two keys. The declarations needed to work on auth2table are available in the header file "/labo/include/aut101.h", where '101' is the actual aut ver- sion. The following C structure supports the description of an hash element : typedef struct auth2table { auth2elem *TABLE; long TABLE_SIZE; long NUMBER_ELEM; long NUMBER_ADD; long NUMBER_SCAN; long NUMBER_DEL; long NUMBER_STRETCH; } auth2table; TABLE TABLE is the hash element array. TABLE_SIZE TABLE_SIZE is the size of the hash table. NUMBER_ELEM NUMBER_ELEM is the number of element in the hash table. NUMBER_ADD NUMBER_ADD is the number of added elements. NUMBER_SCAN NUMBER_SCAN is the number of scans to find an element. NUMBER_DEL NUMBER_DEL is the number of deleted elements. NUMBER_STRETCH NUMBER_STRETCH is the number of hash table stretch. SEE ALSO
aut(1), auth2table(3), BUG REPORT
This tool is under development at the ASIM department of the LIP6 laboratory. We need your feedback to improve documentation and tools. ASIM
/LIP6 October 1, 1997 AUTH2TABLE(3)
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