Cracking the secret of Go language keywords

Go language keywords are divided into three categories: reserved words, constants and operators, such as var (reserved words), true (constant), (operator). They are used to define syntax, semantics, and perform operations, such as var to declare a variable, if to create a conditional statement, and fmt.Println to print a string. Common keywords also include break (to exit a loop), continue (to skip a loop), for (to define a loop), range (to traverse a collection), return (to return a function), and switch (to select a block of code based on a value).

Crack the secret of Go language keywords

Keywords are used in Go language to define the syntax and semantics of the language. Understanding these keywords is crucial to writing effective Go code.

Keyword Types

Go language keywords are divided into three categories:

• Reserved words: These keywords are owned in Go Special meaning and cannot be used as an identifier. For example: var, func, if.
• Constants: These keywords define built-in constants in Go. For example: true, false, nil.
• Operators: These keywords are used to perform various operations. For example: ,-,*.

Practical

The following code example demonstrates how to use some keywords in Go code:

package main

import "fmt"

const name string = "Jane Doe"
var age int = 30

func main() {
    if age >= 18 {
        fmt.Println(name, "is an adult.")
    }
}

In this code:

• const defines a string constant named name.
• var defines an integer variable named age.
• func defines a function named main.
• if is a conditional statement that checks if age is greater than or equal to 18.
• fmt.Println is a function that prints a string to standard output.

Other keywords

The following are some other common keywords in the Go language:

• break: Exit loop or switch.
• continue: Skips the current iteration of the loop.
• for: Define a loop.
• range: Traverse the collection or map.
• return: Return from the function.
• switch: Select a code block based on the value of a variable.
• try: Handle errors.

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