Ben Chuanlong Du's Blog

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Rust Error "error: expected item, found 'let'"

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

The error message "error: expected item, found 'let'" is commonly encountered in Rust when you mistakenly place a let statement in an invalid location. A let statement can only be used …

Memory Layout in Rust

Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

Different Types of Memory in Rust

Rust has 3 different types of memory: static memory, stack memory and heap memory.

  1. Static variables live in static memory and is determined at compile time. It is suggested that you define large data variables as static so that they live in the static memory instead of stack memory to avoid stack overflow problems. Of course, another way is to put those variables into heap memory (but at the cost of slight performance loss).