• kinghajj (10/10) Jun 19 2004 I read about Associative Arrays (which remind me of hashes from Ruby/Per...
• Derek (10/14) Jun 19 2004 Very close. Try this instead...
• kinghajj (8/17) Jun 19 2004 Oh! OK, that makes sense now! They should add that
• Derek (12/31) Jun 20 2004 This works for me...

kinghajj <kinghajj_member pathlink.com> writes:

I read about Associative Arrays (which remind me of hashes from Ruby/Perl),
and wanted to do a test... and failed.

I'm using this:
char[char[]] [] my_aa;

To try to make an associative array that I can use like this:
my_aa["hello"] = "Hello, world!";

However, when I compile, I get this:
cannot implicitly convert char[5] to int

How can I declare the variable the correct way?
I guess that I need to make an associative array of strings.

Derek <derek psyc.ward> writes:

On Sun, 20 Jun 2004 05:49:41 +0000 (UTC), kinghajj wrote:

 char[char[]] [] my_aa;
 
 To try to make an associative array that I can use like this:
 my_aa["hello"] = "Hello, world!";

Very close. Try this instead...

  char[][char[]] my_aa;


The format is ...
  <datatype>[char[]] <idname>;

and in your case the <datatype> is 'char[]'.

What you had declared was a dynamic array of associative arrays of char.

-- 
Derek
Melbourne, Australia

kinghajj <kinghajj_member pathlink.com> writes:

In article <7mccg3fla2ax$.flas6levjw10.dlg 40tude.net>, Derek says...
Very close. Try this instead...

  char[][char[]] my_aa;


The format is ...
  <datatype>[char[]] <idname>;

Oh! OK, that makes sense now! They should add that
to the documentation on arrays.

Quick follow up, can you use associative arrays like this:
char[] key = "test";
char[][char[]] my_aa;

my_aa[key] = "Hello";

printf("MSG: %.*s\n", my_aa["test"]);
and in your case the <datatype> is 'char[]'.

What you had declared was a dynamic array of associative arrays of char.

-- 
Derek
Melbourne, Australia

Derek <derek psyc.ward> writes:

On Sun, 20 Jun 2004 06:16:30 +0000 (UTC), kinghajj wrote:

 In article <7mccg3fla2ax$.flas6levjw10.dlg 40tude.net>, Derek says...
Very close. Try this instead...

  char[][char[]] my_aa;


The format is ...
  <datatype>[char[]] <idname>;

 Oh! OK, that makes sense now! They should add that
 to the documentation on arrays.
 
 Quick follow up, can you use associative arrays like this:
 char[] key = "test";
 char[][char[]] my_aa;
 
 my_aa[key] = "Hello";
 
 printf("MSG: %.*s\n", my_aa["test"]);


This works for me...

 char[][char[]] my_aa;
 char[] key = "hello";
 void main()
 {
   my_aa[key] = "Hello, world!";
   printf("%.*s", my_aa[key]);
 }

-- 
Derek
Melbourne, Australia