Go Language Error Handling: Difference between revisions
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A common error generation pattern in Go is that function return an error instance as the second return value. | A common error generation pattern in Go is that function return an error instance as the second return value. | ||
The returned error instance is implements the <code>error</code> [[Go_Interfaces#Overview|interface]]: | <span id='Error_Interface'></span>The returned error instance is implements the <code>error</code> [[Go_Interfaces#Overview|interface]]: | ||
<syntaxhighlight lang='go'> | <syntaxhighlight lang='go'> | ||
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} | } | ||
</syntaxhighlight> | </syntaxhighlight> | ||
The <code>error</code> interface is a [[Go Concepts - Lexical Structure#Pre-Declared_Identifiers|pre-declared type identifier]]. | |||
=Organizatorium= | =Organizatorium= | ||
Revision as of 22:28, 30 August 2023
Internal
Overview
A common error generation pattern in Go is that function return an error instance as the second return value.
The returned error instance is implements the error interface:
type error interface {
Error() string
}
The error interface is a pre-declared type identifier.
Organizatorium
Create an error:
errors.New("at least three arguments are required")
TO DEPLETE
These are documents produced by the previous attempt. Process, merge into this document, and deplete: Go Concepts - Error Handling