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Metadata
ID:go-best-practices/equivalent-append
Language: Go
Severity: Warning
Category: Best Practices
Description
In Go, the append() function is used to append elements to a slice. It is a built-in function that takes a slice and one or more elements as arguments and returns a new slice with the appended elements.
When append() is called with a single argument, it is similar to the assignment of that argument to a variable. This is because the append() function returns a new slice that includes the original elements of the input slice and the appended element(s).
For example:
s:=[]int{1,2,3}s=append(s,4)
In this code snippet, the append() function is called with a single argument s and the value 4. The append() function returns a new slice with the elements [1, 2, 3, 4], and this new slice is assigned back to the variable s. The original value of s is replaced with the new slice containing the appended element.
It is important to note that the append() function does not modify the original slice in-place since slices are reference types in Go. Instead, it returns a new slice that combines the elements of the original slice and the appended element(s).
In summary, when append() is used with a single argument, it effectively performs an assignment of the argument to the variable, replacing the original value with a new slice that includes the appended element(s).
