In Perl, is it possible to use a range of numbers with '..' as a key in a hash?
Something in like:
That is, the range operation is evaluated, and all members of the range are 'mapped' to the RHS value, so that for the first keypair, '1000' would return 1G.
I think somehow 'map' might be what i'm after, but can't find any reference material to support my theory.
Any advice welcome,
cheers
dsw
Last edited by dsw; 08-31-2010 at 06:46 AM..
Reason: typo
I have line which is read from xml doc. I want to put this line into hash(perl variable). find line below and how i want to put this in hash
<font size="10" type="int" name="ABC" >
hash key should be size, type and name with corresponding value
I doing as below:-
$line =~ s/\s*.*?\s//;... (3 Replies)
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)
Hi i am reading one file and creating Hash from the contents of it my issue is there are 3 different files in 3 different locations having same structure so for parsing these files i have one subroutine which returns hash after reading all the 3 files i need to create consolidated hash from three... (2 Replies)
Hi,
Now i work in a code that
1-get data stored in the database in the form of hash table with a key
field which is the " Name"
2-in the same time i open a txt file and loop through it word by word
3- which i have a problem in is that :
I need to loop word by word and check if it is a... (0 Replies)
Hi,
The task i have to do is to
1- create a database contains the Names .run the query and store results in hash make the Name field is the hash key
2- in the same time i have a txt which i will loop through it word by word and check for each word if a hash key ( compare it with the Names in... (0 Replies)
Hello,
I have a hash in hsh. I need to assign it to another hash globalHsh. I think the below statement does not work
$globalHsh{$id} = %hsh;
What is the right way to assign it?
Thanks (3 Replies)
Can Someone explain me why even using Tie::IxHash I can not get the output data in the same order that it was inserted? See code below.
#!/usr/bin/perl
use warnings;
use Tie::IxHash;
use strict;
tie (my %programs, "Tie::IxHash");
while (my $line = <DATA>) {
chomp $line;
my(... (1 Reply)
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)
Hi, I have a hash of hash where it has
name, activities and count
i have data like this -
$result->{$name}->{$activities} = $value;
content of that are -
name - robert tom cat peter
activities - running, eating, sleeping , drinking, work
i need to print output as below
... (3 Replies)
Discussion started by: asak
3 Replies
LEARN ABOUT HPUX
posix_fadvise
posix_fadvise(2) System Calls Manual posix_fadvise(2)NAME
posix_fadvise(), posix_fadvise64() - file advisory information
SYNOPSIS
Parameters
fd The open file descriptor to which the fadvise operation applies.
offset The begining of the specified range as a positive, byte offset.
len The length of the specified range in bytes.
advice Specifies advice to be applied to range.
DESCRIPTION
The function is used to advise the system about the expected behavior of the application with respect to the data in the file associated
with the open file descriptor, fd, starting at offset and continuing for len bytes. The specified range need not currently exist in the
file. If len is zero, all data following offset is specified.
It should be noted that the effect of all hints is cumulative for a given file object. All hints will be removed on processing the last
close of the file object.
The function may be used for large file access by a 32-bit application built with set to 64.
The advice parameter is used to convey the hint to be applied to the data and may be one of the following values:
Specifies that the application has no advice to give on its behavior with respect to the specified data. It is the default characteristic
if no advice is given for an open file.
Specifies that the application expects to access the specified range of data
sequentially from the lower offsets to higher offsets.
Specifies that the application will expect to access the specified
specified range of data in a random order.
Specifies that the application will expect to access the specified
range of data in the near future.
Specifies that the application will expect that it will not
access the specified range of data in the near future.
Specifies that the application will expect to access the specified range
of data once and then not reuse it thereafter.
These values will be defined in
RETURN VALUE
Successful completion.
Failure.
is set to indicate the error.
ERRORS
If the service fails, is set to one of the following values:
The fd argument is not a valid file descriptor.
The fd argument is associated with a pipe or FIFO.
The posix_fadvise operation is not supported by the underlying file system.
The value of advice or one of the other input values has been found to be invalid.
A designated hint is not supported by the underlying file object.
EXAMPLES AUTHOR
was derived by HP from the IEEE POSIX 1003.1-2001 Standard.
SEE ALSO fadvise(2), fcntl(2), fadvise(5), fcntl(5).
STANDARDS CONFORMANCE posix_fadvise(2)