Similar to C++11 decltype in other programming languages?

Question

Programming languages

Always in all typed languages ​​with an explicit type declaration, I was tormented by the fact that it was impossible to specify the type of a variable "the same as the variable such and such." I recently learned that decltype appeared in C++11.
Tell me, are there analogues in other programming languages? And if so, in which ones?

Answer 1

There is in D typeof. Rust has reserved the keyword, but it hasn't been implemented yet. Java / Kotlin has reflection. But this is more heavy stuff.