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How to handle errors effectively in the Golang language

For any developer, the only goal is to write lines of code without any errors. Almost all programming languages have the same conventional procedure for error handling. But the procedure in the Golang programming language is a bit different and unconventional which is a bit difficult for developers to understand. Although the Golang language has been in the industry for 10 years it is not a very popular language. One of the basic reasons is error handling as it takes a lot of time which can affect the workflow of developers. There are  Golang companies in the industry to help other businesses in handling errors effectively.

Before you know the best practice it s mandatory to know the basic concepts of the Golang language. Let us focus on how we can handle errors by using its inbuilt functionality which can help you in extracting the information from a particular error. Without the briefing of an error, no one can find a way to fix this.


Ways to handle errors effectively:



Using error interface:



You can use the error in-built interface which prints the error information in the form of a string by using the Error() method.  This method is simple but effective for those who use this language. Below is the syntax to create the error interface:




type error interface{

Error() String;




Construction of error messages with the help of Golang in-built packages.


You can either use error or fmt packages to extract very vital error information. when you face issues in using data types like int, string etc. you can use the fmt package to see whether there is any error or not.


To find out if any error is found or not, always use this if clause before you proceed. 


if(err! = nil) (Here nil is default or zero value in Golang errors). If you miss this line of code there are chances of getting an error value as nil, even though there are other errors in the program.


Sometimes we find challenges in understanding these concepts, especially for people who are new to this language. In such situations, companies utilize the expertise of the best Golang companies to grasp it quickly.



Making use of expected errors


Developers can find errors in any part of code, especially if it is written in a new branch. Never forget to define the expected errors in your code as it is a vital technique in error handling. 

An example of defining an expected error is “Sentinel”. 



By defining custom errors types:



The best way to handle errors in Golang is by defining custom error types as it helps to identify all kinds of errors if found in a program. But one has to be aware of which custom error types should be implemented at the right time. These error types are of various kinds and few errors are compatible with the version of this language. To sort this out, Golang companies are the best point of contact because of their success in this industry.



Wrapping the errors


This is one important way which has to be practised by everyone who works on this language. By wrapping an error you can get additional information about the error which can make your work easy. It helps to identify the line where the error occurred without even losing the original value. Go1.1.3 is compatible with this functionality.




e:= fmt.Error(“… %w …”, …, err, …)


Note: There should be only one directive of %w in the code. Here %w is used for wrapping the error.

Exception handling mechanism helps you to find errors easily which helps you to solve errors in time. Though Golang does not have an exception handling mechanism, it still has a mechanism which is an alternative to this. “Defer, panic and recover” are three statements used in the Golang programming language. For any organization to understand these concepts quickly and implement them to deliver quality Golang projects to clients is possible when they partner with the correct Golang Companies as they offer top-quality services.


Sum Up:

Although there are challenges in learning an effective procedure for error handling in Golang, it is important to know. Error handling is a key component of the software development life cycle. By following these ways you can save an ample amount of time which can be utilized in writing quality lines of code. It helps in the growth of team performance which is directly reflected in your company’s growth. Always feel free to approach the experts and experienced professionals in Golang to learn more effectively. Golang Companies in India can help you in achieving this.


About Us:

BrainFuel is one of the top players in the Golang companies industry that helps various companies or businesses to use this language effectively in their projects. We as an experienced professional team extend our hands to help you whenever you face any issue. The approach used by our company will ensure to provide the best results possible to all our clients. Even in emergencies, we are available to help resolves the issues at the earliest.




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