In this post, we will see how to resolve How do I return a reference in rust, that is automatically dereferenced Question: Let’s say I have the struct: Implementing the Index trait is easy: I also have this implementation: Technically ...
In this post, we will see how to resolve Use one recursive case class constructor in two sealed traits Question: I am defining few ADTs representing logic formulas. They all use i.e. And constructor, but then differ in what other ...
In this post, we will see how to resolve Convert for loop to iterator in rust Question: So, I am trying to build a vector of vectors of a custom type.I am trying to implement a default for it and ...
In this post, we will see how to resolve Implement trait that has function which return traits Question: I am trying to implement a trait for a struct which in turn has functions that return traits. I want this, because ...
In this post, we will see how to resolve Supertrait as return traitobject doesn’t have a known size at compile time Question: I am working with the DHT11 library where the argument gpio, based on the esp32 implementation, for new ...
In this post, we will see how to resolve Match for two parameters and ranges Question: I’m trying to implement a quadrant trait for a 2-dimensional point and confused on how to match over 2 struct fields with ranges. My ...
In this post, we will see how to resolve impl Trait return type causes wrong lifetime elision Question: The impl Trait syntax for return types seems to cause the compiler to incorrectly assume that the lifetime of the input argument ...
In this post, we will see how to resolve How to generate instance of trait for another trait Question: TL;DR: What’s the accepted way to impl a trait for all types implementing another trait in Rust? I’m working through trying ...
Question: I am trying to implement part of a UI framework. In the bottom example, the impl of widgets_mut() for Vec<T> needs to return a vector of trait objects like Vec<&mut dyn AnyWidget>. Given T is constrained to impl AnyWidget ...
Question: I was trying to do simple struct with few traits following examples on the internet an came across the following problem. When I try to call this from my main function as follows from main.rs: Compiler tells me that ...