On Thursday, 14 January 2021 at 18:24:44 UTC, ddcovery wrote:
If it's not a bother, I'd like to know how you usually approach
it
Usually I don't deal with null because my functions get primitive
types, slices, or structs. `ref` parameters can be used to
replace pointers that may not be null.
When something is nullable by design, I usually do this:
```
if (!person) {
return; // early return if possible
}
if (auto f0 = person.father) {
if (auto f1 = f0.father) {
if (f1.name == "Peter") {
doSomething();
}
}
}
```
It doesn't matter whether you're working with a class, pointer,
or struct with opCast, this works. When access patterns get
complex the nesting may get very deep.
Only if you can't avoid this I would consider using fancy helper
functions, otherwise just use an if-statement or the && operator.
