Build time is the time required to transform source code into executable or intermediate output. In large codebases, punishing build times destroy momentum, so Go treats compilation speed as a core engineering and productivity goal. section 1.0 section 1.1
Go keeps compilation fast through structural constraints:
- Disallows circular imports, keeping the package dependency graph directed and processable in a defined order. section 1.2
- Requires every import to be used, preventing builds from processing unused dependencies. section 1.2
- Uses selective type inference, reducing annotation without giving up static type guarantees. section 1.2
Compilation as a feedback loop
Fast compilation lets developers trigger a build on every file save. The compiler becomes a continuous collaborator rather than a final gate checked only after a long development session. section 1.2
