# go error handling Published articles for go error handling. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## Ep. 7: Building Resilient Go Applications: Key Error Handling Techniques DevFeed: [Ep. 7: Building Resilient Go Applications: Key Error Handling Techniques]() Original publisher: [Read original article]() Published: 2024-06-20T00:00:00Z Content type: tutorial Language: en Sources: [William Kennedy]() Topics: [Error Handling](), [Go Language](), [Logging](), [integrity]() Tags: [best-practices](), [comprehensive-error-handling-go](), [contextual-error-handling-go](), [data-validation-signals-in-go](), [debugging](), [debugging-errors-in-go](), [detailed-error-management-go](), [effective-go-error-logging](), [efficient-error-logging-go](), [error-handling](), [error-handling-best-practices-go](), [error-handling-framework-go](), [error-handling-strategies-go](), [error-management-in-go](), [go](), [go-application-resilience](), [go-application-stability](), [go-error-handling](), [go-error-handling-methods](), [go-error-handling-techniques](), [go-error-propagation-prevention](), [go-error-recovery-strategies](), [go-error-signaling-semantics](), [go-errors-as-signals](), [go-shutdown-signals](), [horizontal-signaling-go-errors](), [integrity](), [logging](), [logging-errors-in-go](), [maintainable-go-code](), [preventing-error-propagation-in-go](), [recovering-from-errors-in-go](), [reliable-go-applications](), [three-step-error-handling-go](), [trusted-errors-in-go](), [writing-robust-go-code]() ### AI overview A video tutorial for Go developers presents a three-step error-handling approach: log errors once, decide whether recovery or termination is appropriate, and prevent handled errors from propagating. It also explains errors as signals and discusses trusted errors, shutdown signals, and data validation signals. ### Source excerpt Introduction: Going into more detail on error handling, Bill provides a comprehensive overview of effective strategies and best practices for Go developers. By exploring the nuances of error management, he equips developers with the tools needed to write more reliable and maintainable code. Learn the three-step approach to logging errors, determining recovery, and preventing propagation. Understand how treating errors as signals, similar to channels' horizontal signaling, enhances error management. Discover the importance of implementing trusted errors, shutdown signals, and data validation signals to maintain code integrity and reliability. ## Ep. 6: GoRoutines and Error Handling: Essential Techniques for Software Engineers DevFeed: [Ep. 6: GoRoutines and Error Handling: Essential Techniques for Software Engineers]() Original publisher: [Read original article]() Published: 2024-06-14T00:00:00Z Content type: tutorial Language: en Sources: [William Kennedy]() Topics: [Concurrency](), [Go Language](), [Error Handling](), [HTTP]() Tags: [best-practices-in-go-concurrency](), [concurrency](), [concurrent-computing-in-go](), [controlled-goroutine-shutdown](), [error-handling](), [go](), [go-application-integrity](), [go-application-performance](), [go-application-reliability](), [go-concurrency-model](), [go-concurrent-processing](), [go-data-transaction-management](), [go-development-strategies](), [go-error-handling](), [go-http-package-shutdown](), [go-parent-child-goroutines](), [go-programming-best-practices](), [go-programming-for-software-engineers](), [go-programming-tutorials](), [go-structured-hierarchy](), [goroutine-debugging](), [goroutine-error-handling](), [goroutine-hierarchy](), [goroutine-termination-techniques](), [goroutines](), [high-stakes-data-transactions-in-go](), [managing-goroutines](), [orphan-goroutines](), [processes](), [resilient-error-handling-in-go](), [robust-go-error-handling](), [structured-goroutine-management](), [ultimate-software-design-series]() ### AI overview This installment of the Ultimate Software Design series explains how to manage goroutine parent-child relationships, terminate goroutines in an orderly way, and implement error handling for concurrent Go applications. It also discusses controlled shutdown using Go's HTTP package. ### Source excerpt Introduction: Continue the dive into the complexities of Go's concurrency model in this segment of the "Ultimate Software Design" series, where Bill shares essential techniques for managing GoRoutines. Here are three fresh takeaways: Understand the critical role of maintaining proper parent-child relationships in GoRoutine operations to avoid unexpected behaviors and system failures. Gain insights into structured techniques for terminating GoRoutines, ensuring that all child processes complete before their parent terminates, to maintain operational integrity. ## Interfaces 101 : Error Handling With Go Ep. 3 DevFeed: [Interfaces 101 : Error Handling With Go Ep. 3]() Original publisher: [Read original article]() Published: 2023-02-13T00:00:00Z Content type: tutorial Language: en Sources: [William Kennedy]() Topics: [Go Language](), [interfaces](), [Error Handling]() Tags: [compiler](), [error-handling](), [error-interface](), [exceptions](), [false-positives](), [go](), [go-error-handling](), [golang](), [implement](), [interfaces](), [video]() ### AI overview This video explains Go error interfaces through a custom error type and a test that unexpectedly fails when the returned error appears to be nil. It covers how Go determines whether an interface value is nil and how to avoid false positives in custom interface implementations. ### Source excerpt Introduction In episode 2, Miki examined the impact interfaces have on the performance of a Go program. To perform this experiment, Miki invoked a type's method in two ways: with the concrete type and as an interface function to measure the difference in execution time. The conclusion of this experiment was that calling a method with the concrete type is faster than using an interface. During the experiment, Miki made use of the build flag -gcflag='-m' to display which variables were being allocated on the heap and where the compiler was automatically inlining function calls. ## An Open Letter To The Go Team About Try DevFeed: [An Open Letter To The Go Team About Try]() Original publisher: [Read original article]() Published: 2019-07-01T00:00:00Z Content type: opinion Language: en Sources: [William Kennedy]() Topics: [Go Language](), [Error Handling](), [Programming]() Tags: [ardan-labs](), [blog](), [developers](), [error-handling](), [go](), [go-error-handling](), [go-programming](), [golang](), [programming]() ### AI overview An open letter argues that the proposed Go try mechanism is not sufficiently supported by available survey and proposal data. It questions whether most Go developers need improved error handling and whether introducing a second error-handling mechanic is the right design. ### Source excerpt "Once a language gets complex enough, programming in it is more like carving out a subset from an infinite sea of features, most of which we'll never learn. Once a language feels infinite, the costs of adding further features to it are no longer apparent". - [Mark Miller] (https://medium.com/@erights/the-tragedy-of-the-common-lisp-why-large-languages-explode-4e83096239b9) The new try proposal is an addition to the language that introduces a second mechanic to handle errors. It is being introduced in response to data gathered from the 2018 Go Survey and a review of proposals that were submitted during the Go 2 proposal process. The conclusion the Go team made from these data gathering exercises was that Go developers wanted better error handling. ## Functions and Naked Returns In Go DevFeed: [Functions and Naked Returns In Go]() Original publisher: [Read original article]() Published: 2013-10-10T00:00:00Z Content type: tutorial Language: en Sources: [William Kennedy]() Topics: [Go Language](), [Error Handling](), [Compiler]() Tags: [ardan-labs](), [blog](), [code](), [error-handling](), [fmt](), [function](), [go](), [go-error-handling](), [go-programming](), [golang](), [programming](), [scope](), [shadowing](), [variable]() ### AI overview This Go tutorial explains returning multiple values, handling errors through returned error values, ignoring a return value with an underscore, naming return arguments, and using naked returns. It also warns about variable shadowing and explains how braces create new scopes. ### Source excerpt In Go values that are returned from functions are passed by value. Go gives you some nice flexibility when it comes to returning values from a function. Here is a simple example of returning two values from a function: package main import ( "fmt" ) func main() { id, err := ReturnId() if err != nil { fmt.Printf("ERROR: %s", err) return } fmt.Printf("Id: %d\n", id) } func ReturnId() (int, error) { id := 10 return id, nil } The function ReturnId returns a value of type integer and of type error. This is something very common that is done in Go. Error handling is performed by returning a value of type error from your functions and the calling function evaluating that value before continuing. If you don't care about the error for some reason after a function call returns, you can do something like this: id, _ := ReturnId() This time I used an underscore to represent the return value for the second return argument, which was the error. This is really nice because I don't need to declare a variable to hold the value being passed in, I can simply ignore it. You also have the option to name your return arguments: func ReturnId() (id int, err error) { id = 10 return id, err } If you name your return arguments you are creating local variables just like with your function parameters. This time when I set the id variable, I remove the colon (:) from the short variable declaration and convert it to an assignment operation. Then in the return I specify the return variables as normal. Naming your return arguments is a nice way to document what you are returning. There is also something else that you can do with your named arguments, or not do: func ReturnId() (id int, err error) { id = 10 return } This is what is called a naked return. I have removed the arguments from the return statement. The Go compiler automatically returns the current values in the return arguments local variables. Though this is really cool you need to watch for shadowing: func ReturnId() (id int, err error)