What does the hexadecimal value obtained by printing the function name mean?

php editor Zimo is here to answer a common question: "What does the hexadecimal value obtained by printing the function name mean?" In PHP, we can pass Call the function `get_defined_functions()` to get all defined functions and convert the function names to hexadecimal values. This hexadecimal value is actually the memory address of the function name, which can be used as a unique identifier for the function. By printing the hexadecimal value of the function name, we can have a deeper understanding of the location and usage of the function in memory, which is very helpful for debugging and performance optimization.

Question content

In the code below, I have created two functions somefunction1 and somefunction2:

package main

import (
    "fmt"
)

func someFunction1() {}
func someFunction2() {}

func main() {
    fmt.Println(someFunction1)  // 0x7de480
    fmt.Println(someFunction2)  // 0x7de4a0
}

By printing them, I got two hexadecimal values ​​0x7de480 and 0x7de4a0. My question is simple, what do these values ​​mean?

Solution

These hexadecimal values ​​are the memory addresses of the two functions someFunction1 and someFunction2. They indicate the location of the function in the computer's memory. This means that someFunction1 is stored at memory address 0x7de480 and someFunction2 is stored at memory address 0x7de4a0.

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