rustHow do I determine the type of a variable in Rust?
The type of a variable in Rust can be determined using the std::any::type_name function. This function takes a reference to a variable and returns a string containing the type of the variable.
let x = 5;
println!("x is of type {}", std::any::type_name::<&x>());
Output example
x is of type i32
The code above consists of the following parts:
let x = 5;- This declares a variablexwith the value5.std::any::type_name::<&x>()- This is a function call tostd::any::type_namewhich takes a reference to the variablexas an argument.println!("x is of type {}", std::any::type_name::<&x>());- This prints the type of the variablexto the console.
Helpful links
Related
- How do I zip variables in Rust?
- How do I access a tuple variable by index in Rust?
- How do I print a variable in Rust?
- How can I use a mutex as a global variable in Rust?
- How can I use a hashmap as a global variable in Rust?
- What is the default value of a variable in Rust?
- How do I add a variable to a string in Rust?
- How do I write a variable to a file in Rust?
- How do I determine the size of a variable in Rust?
- How do I check if a variable is in a list of values in Rust?
More of Rust
- How to match a URL with a regex in Rust?
- How to use regex to match a double quote in Rust?
- How to use regex lookahead in Rust?
- How to perform matrix operations in Rust?
- How to match whitespace with a regex in Rust?
- How to replace strings using Rust regex?
- How to use non-capturing groups in Rust regex?
- Regex example to match multiline string in Rust?
- How to use regex lookbehind in Rust?
- How to replace all matches using Rust regex?
See more codes...