• Paul (15/15) Sep 23 2021 Can I have an associative array with the element type being a
• =?UTF-8?Q?Ali_=c3=87ehreli?= (16/26) Sep 23 2021 I think you got that error from a different experiment because 'keypad'
• Paul (1/2) Sep 23 2021 Thanks Ali. Much appreciated!

Paul <phshaffer gmail.com> writes:

Can I have an associative array with the element type being a 
struct?
..this
26  // simple dual tone key struct
27  struct keytones { ushort rowFreq; ushort colFreq; }
28
29  // keypad associative array
30  keytones[string] keypad;
31  keypad["1"].rowFreq = 697; keypad["1"].colFreq = 1209;

...gets this response from DMD compiler

aaa.d(30): Error: undefined identifier `keypad`
aaa.d(30): Error: declaration `aaa.main.keytones` is already 
defined
aaa.d(27):        `struct` `keytones` is defined here

thanks for any assistance!

=?UTF-8?Q?Ali_=c3=87ehreli?= <acehreli yahoo.com> writes:

On 9/23/21 3:06 PM, Paul wrote:
 Can I have an associative array with the element type being a struct?

Of course! And it's very common. :)

 ...this
 26  // simple dual tone key struct
 27  struct keytones { ushort rowFreq; ushort colFreq; }
 28
 29  // keypad associative array
 30  keytones[string] keypad;
 31  keypad["1"].rowFreq = 697; keypad["1"].colFreq = 1209;

 ....gets this response from DMD compiler

 aaa.d(30): Error: undefined identifier `keypad`

I think you got that error from a different experiment because 'keypad' 
is clearly valid in that code. However, you are attempting to access 
members of a non-existing element: There is no element corresponding to 
"1" in the AA (yet).

There are multiple ways of populating an AA but I usually and simply 
assign an rvalue in such cases:

void main() {
   // simple dual tone key struct
   struct keytones { ushort rowFreq; ushort colFreq; }

   // keypad associative array
   keytones[string] keypad;
   keypad["1"] = keytones(697, 1209);
}

Ali

Paul <phshaffer gmail.com> writes:

 Of course! And it's very common. <= lol

Thanks Ali.  Much appreciated!