100 Go Mistakes And How To Avoid Them Pdf Download ((install))

Note to the reader: Always support software authors. The $40 for the PDF is equivalent to 1 hour of a junior developer’s debugging time—an investment with infinite returns.

Not handling EOF distinctly when needed. Fix: treat io.EOF as a normal termination when appropriate.

Note: each numbered entry is a single mistake followed by the fix and a short illustrative example when helpful.

The book categorizes mistakes into several distinct areas. Below is a summary of the most critical sections you should focus on. 100 Go Mistakes And How To Avoid Them Pdf Download

// Good practice func foo() error return fmt.Errorf("foo: error")

Which would you prefer?

Copy the exact data you need into a brand new slice so the large array can be safely freed by the garbage collector. Note to the reader: Always support software authors

The book is published by Manning Publications . Purchasing directly from the publisher often gives you access to multiple formats (PDF, ePub, and liveBook) and ensures you receive the latest errata updates.

Allocating inside hot loops (slices, maps, strings). Fix: reuse buffers and pre-allocate.

func trace(t time.Time) fmt.Println("Elapsed:", time.Since(t)) func process() start := time.Now() defer trace(start) // 'start' is evaluated right here, not at the end time.Sleep(2 * time.Second) Use code with caution. Fix: treat io

// Good practice ctx, cancel := context.WithCancel(context.Background()) go func() // code cancel() ()

Writing unmaintainable tests or premature optimizations.

// Bad practice goto label