On Wednesday, 30 June 2021 at 03:32:27 UTC, Vladimir Panteleev
wrote:
Comparison with `nan` always results in `false`:
THAT explains a lot !
See section 10.11.5:
missed it.
One of the things I do not like with D, and it causes me to shoot
me on the foot over and over, is the lack of null for *every*
data type. Things like:
```d
float lnumStockPricePreceding = null;
foreach (float lnumStockPrice; ludtStockPriceEvolution.range)
if (lnumStockPricePreceding ! is null) {
/// do something
}
lnumStockPricePreceding = lnumStockPrice;
}
```
... were first attempted like following on D:
```d
float lnumStockPricePreceding;
foreach (float lnumStockPrice; ludtStockPriceEvolution.range)
if (lnumStockPricePreceding != float.nan) {
/// do something
}
lnumStockPricePreceding = lnumStockPrice;
}
```
... and now need to be recoded like:
```d
float lnumStockPricePreceding = 0f;
foreach (float lnumStockPrice; ludtStockPriceEvolution.range)
if (lnumStockPricePreceding != 0f) {
/// do something
}
lnumStockPricePreceding = lnumStockPrice;
}
```
... which oftenly complicates things because sometimes even 0f is
a valid value for the task at hand and thus I MISS NULLs A LOT :(
... at least I can do nulls with strings since it a class :)
