Using associative arrays with an if statement


 
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Using associative arrays with an if statement

I have this piece of code. The first if statement is not working, however the second if statement is working fine.

I have set a value for Srcs to be file.srcs and want to print it.
If no value for Rcvs is set, I get the print statement correctly

Code:
hasValue[Srcs]="file.srcs"
if ${hasValue[Srcs]}; then
  echo "Value[Srcs] = ${hasValue[Srcs]}"
fi

if ! ${hasValue[Rcvs]}; then
  echo "No value for Rcvs"
fi

 

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DBD::Sponge(3pm)					User Contributed Perl Documentation					  DBD::Sponge(3pm)

NAME
DBD::Sponge - Create a DBI statement handle from Perl data SYNOPSIS
my $sponge = DBI->connect("dbi:Sponge:","","",{ RaiseError => 1 }); my $sth = $sponge->prepare($statement, { rows => $data, NAME => $names, %attr } ); DESCRIPTION
DBD::Sponge is useful for making a Perl data structure accessible through a standard DBI statement handle. This may be useful to DBD module authors who need to transform data in this way. METHODS
connect() my $sponge = DBI->connect("dbi:Sponge:","","",{ RaiseError => 1 }); Here's a sample syntax for creating a database handle for the Sponge driver. No username and password are needed. prepare() my $sth = $sponge->prepare($statement, { rows => $data, NAME => $names, %attr } ); o The $statement here is an arbitrary statement or name you want to provide as identity of your data. If you're using DBI::Profile it will appear in the profile data. Generally it's expected that you are preparing a statement handle as if a "select" statement happened. o $data is a reference to the data you are providing, given as an array of arrays. o $names is a reference an array of column names for the $data you are providing. The number and order should match the number and ordering of the $data columns. o %attr is a hash of other standard DBI attributes that you might pass to a prepare statement. Currently only NAME, TYPE, and PRECISION are supported. BUGS
Using this module to prepare INSERT-like statements is not currently documented. AUTHOR AND COPYRIGHT
This module is Copyright (c) 2003 Tim Bunce Documentation initially written by Mark Stosberg The DBD::Sponge module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. In particular permission is granted to Tim Bunce for distributing this as a part of the DBI. SEE ALSO
DBI perl v5.14.2 2011-09-14 DBD::Sponge(3pm)

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