Compile time
Compile time is the phase before program execution when source code is analyzed, transformed, or translated and compile-time properties are determined.
Write Powerful Rust Macros
Compile time is the phase in which source code is analyzed and transformed into an executable or library artifact.
- How it is used
- Positions compile time as the stage where Rust macros generate ordinary code before linting, type checking, and artifact production.
- How deep it goes
- Traces macro expansion through later build stages but does not detail compiler internals or expansion implementation.
- Examples
- Uses macro-generated structs and functions, a hidden-code figure, and a blanket implementation for Copy types.
- What you can do after
- Evaluate compile-time cost and choose macros only when their boilerplate reduction outweighs understandability and build-time trade-offs.
Learn Rust in a Month of Lunches
Compile time is the phase before program execution in which source code is analyzed and transformed into executable code.
- How it is used
- Frames compile time as the programmer’s window for finding problems before program execution.
- How deep it goes
- Explains the compile-time/runtime boundary and walks through compiler corrections, but defers detailed language rules.
- Examples
- Uses Rust Playground code involving String conversion, character pushing, formatting punctuation, mutability, and an unused variable.
- What you can do after
- Diagnose compiler feedback and apply suggested corrections before running a Rust program.
Read how Learn Rust in a Month of Lunches explains compile time →
Related concepts
- JavaScript runtimecontrasts with · A JavaScript runtime is an execution environment that runs JavaScript code and provides the language engine and host APIs needed to interact with its platform.
- static typingused by · Static typing is a type-system discipline in which program types are determined or checked before execution, typically during compilation or static analysis.
- macroused by · A macro is a named construct that expands or transforms source code, commands, or templates before or during execution.
- sccacheaddressed by · sccache is a compiler cache that stores and reuses compilation results.
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