Go copy struct to another

This allows you to copy Go values that may contain reference values such as maps, slices, or pointers, and copy their data as well instead of just their references. For usage and examples see the Godoc.

Released under the MIT License. Skip to content. You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. You switched accounts on another tab or window.

Go copy struct to another

In Go, you can copy a struct by value or by reference using pointers. When you copy a struct by value, a new copy of the struct is created in memory, and all the fields of the original struct are copied to the new one. On the other hand, when you copy a struct by reference using a pointer, both the original and the copied struct share the same memory address. In this article, we will discuss how to copy a struct type in Go using value and pointer reference. In the above example, we created a struct type named Person with two fields name and age. We then created a new person p1 with the name "John" and age To copy the person p1 to another person p2, we simply assigned the value of p1 to p2. We then changed the age of p2 to 35 and printed the values of both persons. As you can see, changing the age of p2 did not affect the age of p1. To copy a struct using pointer reference, you need to create a new struct and then assign the memory address of the original struct to it. We then created a new person p1 with the name "John" and age 30 using a pointer reference. To copy the person p1 to another person p2, we assigned the memory address of p1 to p2.

We then changed the age of p2 to 35 and printed the values of both persons. This topic was automatically closed 90 days after the last reply.

Skip to content. Change Language. Open In App. Related Articles. Solve Coding Problems. How to check pointer or interface is nil or not in Golang? How to find the capacity of Channel, Pointer and Slice in Golang?

Skip to content. Change Language. Open In App. Related Articles. Solve Coding Problems. How to check pointer or interface is nil or not in Golang?

Go copy struct to another

Copying a struct in Golang is a common task, and there are a few different ways to do it. This function takes two slices or arrays as arguments and copies the elements from the first slice or array to the second. Println newPerson. This example shows how to copy a struct with the same fields in Golang. A struct copy is a way to create a new copy of a struct in Golang. The new copy will have the same values as the original struct, but it will be a separate object in memory. There are a few reasons why you might need to copy a struct in Golang. For example, you might need to:. There are a few different ways to copy a struct in Golang. The best way to copy a struct will depend on your specific needs.

Love live superstar 3rd season

Earn Referral Credits. Contributors How to fetch an Integer variable as String in GoLang? Additional Information. To copy the person p1 to another person p2, we simply assigned the value of p1 to p2. Format "" and then marshal the struct. Save Article Save. Similar Reads. Println std1. For Business. Format "". Copy to return an error if this field is not copied. Thanks in advance!! Latest commit. In this article, we will discuss how to copy a struct type in Go using value and pointer reference.

Since T does not contain any reference types slices, map, channels as its fields, t and u above can be modified without affecting each other.

Line We create a new copy by appending all the elements to the empty array. Contact Us. Hire With Us. Go Pointer to Pointer Double Pointer. Thank you for your valuable feedback! To read more on the differences between deep copying and shallow copying, check this Answer. Dates are stored in wall: ext: loc: format when using custom types in structs. Generative AI. MIT license. Vote for difficulty :. Search Search. Save Article Save. Branches Tags.