contextutil

func Require ¶

func Require(ctx context.Context) context.Context

Require returns ctx when non-nil and panics otherwise. Require 返回非 nil 的 context；若 ctx 为空则 panic。

func WithTimeout ¶

func WithTimeout[T any](parent context.Context, d time.Duration, fn func(context.Context) (T, error)) (T, error)

WithTimeout runs fn with a timeout context. WithTimeout 以超时 context 运行 fn。

Example / 示例:

result, err := contextutil.WithTimeout(ctx, 5*time.Second, func(ctx context.Context) (T, error) { ... })