golang to int
Golang is a very popular programming language. Its simplicity, efficiency, rapid development and easy maintenance have made more and more programmers start to learn and use the Golang programming language. During the development process of Golang, it is often necessary to convert strings into integers. So how to implement the process of converting strings into integers in Golang? Next, this article will introduce in detail the string to integer conversion method in Golang.
- Use the strconv.ParseInt function
In Golang, use the strconv.ParseInt function to convert a string into an integer. This function has three parameters, namely string, base, and number of digits. The base and number of digits parameters are optional. If not specified, they default to 10 and 0.
The sample code is as follows:
package main import ( "fmt" "strconv" ) func main() { str := "123" i, err := strconv.ParseInt(str, 10, 64) if err == nil { fmt.Printf("%T, %v ", i, i) } else { fmt.Println(err) } }
In the above sample code, we first use the string "123" to demonstrate how to convert the string to an integer. Next, we call the strconv.ParseInt function, passing the string, base, and number of digits as arguments. Since we are converting the string to an integer of type int64, we specify the number of bits as 64 in the third parameter. Finally, we check for errors and print the results.
- Use the strconv.Atoi function
In Golang, you can also use the strconv.Atoi function to convert a string to an integer. This function has only one parameter, the string to be converted, and the return value is an integer and an error type. If the conversion is successful, the converted integer is returned, otherwise the error type is returned.
The sample code is as follows:
package main import ( "fmt" "strconv" ) func main() { str := "123" i, err := strconv.Atoi(str) if err == nil { fmt.Printf("%T, %v ", i, i) } else { fmt.Println(err) } }
In the above sample code, we also use the string "123" to demonstrate how to convert a string into an integer. The difference is that we use the strconv.Atoi function to convert the string to an integer. If the conversion is successful, the integer is printed, otherwise an error message is printed.
Summary
This article introduces how to convert a string into an integer in Golang, mainly using the two functions strconv.ParseInt and strconv.Atoi, both of which are practical tools provided by Golang. When using these functions, we need to pay attention to the base and number of digits to avoid errors during the conversion process. At the same time, I also hope that this article can help programmers who are learning Golang to better apply Golang to realize their own business needs.
The above is the detailed content of golang to int. For more information, please follow other related articles on the PHP Chinese website!

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics

This article explains Go's package import mechanisms: named imports (e.g., import "fmt") and blank imports (e.g., import _ "fmt"). Named imports make package contents accessible, while blank imports only execute t

This article details efficient conversion of MySQL query results into Go struct slices. It emphasizes using database/sql's Scan method for optimal performance, avoiding manual parsing. Best practices for struct field mapping using db tags and robus

This article explains Beego's NewFlash() function for inter-page data transfer in web applications. It focuses on using NewFlash() to display temporary messages (success, error, warning) between controllers, leveraging the session mechanism. Limita

This article explores Go's custom type constraints for generics. It details how interfaces define minimum type requirements for generic functions, improving type safety and code reusability. The article also discusses limitations and best practices

This article demonstrates creating mocks and stubs in Go for unit testing. It emphasizes using interfaces, provides examples of mock implementations, and discusses best practices like keeping mocks focused and using assertion libraries. The articl

This article details efficient file writing in Go, comparing os.WriteFile (suitable for small files) with os.OpenFile and buffered writes (optimal for large files). It emphasizes robust error handling, using defer, and checking for specific errors.

The article discusses writing unit tests in Go, covering best practices, mocking techniques, and tools for efficient test management.

This article explores using tracing tools to analyze Go application execution flow. It discusses manual and automatic instrumentation techniques, comparing tools like Jaeger, Zipkin, and OpenTelemetry, and highlighting effective data visualization
