Articles tagged "golang"

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golang go error compile variables
5 min readBeginner

Fix 'declared and not used' Error in Go (2026)

Fix Go's 'declared and not used' compile error. Learn why Go enforces this, how to use the blank identifier _, and common cases like loop variables and error returns.

golang go error compile main package
6 min readBeginner

Fix: "function main is undeclared in the main package" in Go

Fix the Go error "runtime.main_main·f: function main is undeclared in the main package". Covers all 5 causes with code examples and step-by-step solutions.

golang go modules go.mod go.sum
5 min readBeginner

go mod tidy Explained: Clean Up Go Module Dependencies (2026)

go mod tidy adds missing and removes unused dependencies from go.mod and go.sum. Learn go mod download, verify, vendor, -e flag, and common post-tidy errors.

golang go error compile import
5 min readBeginner

Go "imported and not used": Fix the Golang Unused Import Compile Error

Fix the Go error "imported and not used": delete the import, use the package, add _ for side effects, fix alias mistakes, or run goimports -w main.go.

golang go error nil pointer
6 min readIntermediate

Fix 'nil pointer dereference' Panic in Go (2026)

Fix Go's 'nil pointer dereference' runtime panic. Covers nil pointers, nil interfaces, nil maps, uninitialized structs, stack trace reading, and nil-safe patterns.

golang go error compile undefined
6 min readBeginner

Fix 'undefined: functionName' Error in Go (2026)

Fix the Go 'undefined: functionName' compile error. Covers wrong package, unexported names, typos, missing imports, and circular imports with before/after code.

golang go undefined error compile
6 min readBeginner

Fix Golang 'undefined: function' Error — All Causes (2026)

Fix the Golang 'undefined: functionName' compile error. Covers missing imports, wrong package, typos, unexported names, and wrong module path with before/after code.

golang go errors debugging programming
7 min readBeginner

Most Common Golang Errors and How to Fix Them (2026)

The most common Golang errors in 2026 with fixes: undefined function, nil pointer, type mismatch, unused variables, and more. Step-by-step solutions with code.

golang go errors debugging programming
8 min readBeginner

Most Common Golang Errors and How to Fix Them (2026)

Quick-reference guide to the most common Golang errors in 2026. Table of errors with 1-line fixes, plus deep-dive links for each error type.

Go Golang Programming macOS Linux
11 min readIntermediate

compile: version does not match go tool version — Fix in 60 Seconds

Fix "compile: version does not match go tool version" in Go. Caused by GOROOT mismatch, stale PATH, or multiple Go installs. Copy-paste fix for Linux, macOS, and Windows.