Go new() Function: Memory Allocation Guide

1 year ago
Emily Johnson
1 minute

In the Go language, the new function is used to allocate memory and return a pointer to that memory. When using the new function, you need to pass the type of memory to be allocated as a parameter. For example:

package main

import "fmt"

func main() {
    var i *int
    i = new(int)
    *i = 42
    fmt.Println(*i) // 输出：42
}

In the example above, first declare a pointer i pointing to an int type, then allocate memory space for an int type using new(int), assign its address to i, finally assign a value of 42 to this memory space using *i, and print it out.

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