float price; if (price == float.nan) { // initialized } else { // uninitialized } ... valid ?

[Andre Pany]

On Wednesday, 30 June 2021 at 03:15:46 UTC, someone wrote:
> Is the following code block valid ?
>
> ```d
> float price; /// initialized as float.nan by default ... right ?
>
> if (price == float.nan) {
>
>    /// writeln("initialized");
>
> } else {
>
>    /// writeln("uninitialized");
>
> }
> ```
>
> if so, the following one should be valid too ... right ?
>
> ```d
> float price;
>
> if (price != float.nan) {
>
>    /// writeln("initialized");
>
> }
> ```

Side note: in case you want to work with money, you may consider 
using a specific data type like 
https://code.dlang.org/packages/money instead of float/double.

Kind regards
Andre