rustHow to get pointer to function in Rust

In Rust, you can get a pointer to a function by using the std::mem::transmute function. This function takes a function pointer and returns a pointer to the function. To use this function, you must first create a function pointer type. For example, if you have a function foo that takes two i32 parameters and returns an i32, you can create a function pointer type like this: type FooFnPtr = fn(i32, i32) -> i32;. Then you can use std::mem::transmute to get a pointer to the function like this: let foo_ptr: *const FooFnPtr = std::mem::transmute(foo);. The foo_ptr variable now holds a pointer to the foo function.

Helpful links

• std::mem::transmute
• Function Pointers in Rust
• Rust by Example - Function Pointers

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