Home Backend Development Golang How Can I Detect Duplicate Attributes in JSON Strings Using Go?

How Can I Detect Duplicate Attributes in JSON Strings Using Go?

Dec 04, 2024 am 07:44 AM

How Can I Detect Duplicate Attributes in JSON Strings Using Go?

Detect Duplicate Attributes in JSON Strings with Go

How do we identify duplicate attributes within JSON strings in Go? Let's delve into a solution using JSON decoding and key value analysis.

Decoding the JSON String

We utilize the json.Decoder to traverse the JSON string. As we encounter objects, we iterate through their keys and values in search of duplicates.

Checking for Duplicates

Within the check function, we distinguish between different delimeters and handle each case separately:

  • Objects ({}): We create a map to track unique keys. If a duplicate key is found, we call a user-defined dup function that can log the duplicate or return an error to terminate the traversal.
  • Arrays ([]): We treat each element as an item in a slice and recursively check for duplicates within that item.

Usage Example

To demonstrate its functionality, let's define a printDup function that prints the duplicate key path and call check on a sample JSON string:

func printDup(path []string) error {
    fmt.Printf("Duplicate %s\n", strings.Join(path, "/"))
    return nil
}

...

data := `{"a": "b", "a":true,"c":["field_3 string 1","field3 string2"], "d": {"e": 1, "e": 2}}`
if err := check(json.NewDecoder(strings.NewReader(data)), nil, printDup); err != nil {
    log.Fatal(err)
}
Copy after login

This will output:

Duplicate a
Duplicate d/e
Copy after login

Handling Duplicates with Errors

Alternatively, we can generate an error on the first duplicate key encountered:

var ErrDuplicate = errors.New("duplicate")

func dupErr(path []string) error {
    return ErrDuplicate
}

...

data := `{"a": "b", "a":true,"c":["field_3 string 1","field3 string2"], "d": {"e": 1, "e": 2}}`
err := check(json.NewDecoder(strings.NewReader(data)), nil, dupErr)
if err == ErrDuplicate {
    fmt.Println("found a duplicate")
} else if err != nil {
    // some other error
    log.Fatal(err)
}
Copy after login

The above is the detailed content of How Can I Detect Duplicate Attributes in JSON Strings Using Go?. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Hot Topics

Java Tutorial
1664
14
PHP Tutorial
1266
29
C# Tutorial
1239
24
Golang's Purpose: Building Efficient and Scalable Systems Golang's Purpose: Building Efficient and Scalable Systems Apr 09, 2025 pm 05:17 PM

Go language performs well in building efficient and scalable systems. Its advantages include: 1. High performance: compiled into machine code, fast running speed; 2. Concurrent programming: simplify multitasking through goroutines and channels; 3. Simplicity: concise syntax, reducing learning and maintenance costs; 4. Cross-platform: supports cross-platform compilation, easy deployment.

Golang vs. Python: Performance and Scalability Golang vs. Python: Performance and Scalability Apr 19, 2025 am 12:18 AM

Golang is better than Python in terms of performance and scalability. 1) Golang's compilation-type characteristics and efficient concurrency model make it perform well in high concurrency scenarios. 2) Python, as an interpreted language, executes slowly, but can optimize performance through tools such as Cython.

Golang and C  : Concurrency vs. Raw Speed Golang and C : Concurrency vs. Raw Speed Apr 21, 2025 am 12:16 AM

Golang is better than C in concurrency, while C is better than Golang in raw speed. 1) Golang achieves efficient concurrency through goroutine and channel, which is suitable for handling a large number of concurrent tasks. 2)C Through compiler optimization and standard library, it provides high performance close to hardware, suitable for applications that require extreme optimization.

Golang's Impact: Speed, Efficiency, and Simplicity Golang's Impact: Speed, Efficiency, and Simplicity Apr 14, 2025 am 12:11 AM

Goimpactsdevelopmentpositivelythroughspeed,efficiency,andsimplicity.1)Speed:Gocompilesquicklyandrunsefficiently,idealforlargeprojects.2)Efficiency:Itscomprehensivestandardlibraryreducesexternaldependencies,enhancingdevelopmentefficiency.3)Simplicity:

Golang vs. Python: Key Differences and Similarities Golang vs. Python: Key Differences and Similarities Apr 17, 2025 am 12:15 AM

Golang and Python each have their own advantages: Golang is suitable for high performance and concurrent programming, while Python is suitable for data science and web development. Golang is known for its concurrency model and efficient performance, while Python is known for its concise syntax and rich library ecosystem.

Golang and C  : The Trade-offs in Performance Golang and C : The Trade-offs in Performance Apr 17, 2025 am 12:18 AM

The performance differences between Golang and C are mainly reflected in memory management, compilation optimization and runtime efficiency. 1) Golang's garbage collection mechanism is convenient but may affect performance, 2) C's manual memory management and compiler optimization are more efficient in recursive computing.

The Performance Race: Golang vs. C The Performance Race: Golang vs. C Apr 16, 2025 am 12:07 AM

Golang and C each have their own advantages in performance competitions: 1) Golang is suitable for high concurrency and rapid development, and 2) C provides higher performance and fine-grained control. The selection should be based on project requirements and team technology stack.

Golang vs. C  : Performance and Speed Comparison Golang vs. C : Performance and Speed Comparison Apr 21, 2025 am 12:13 AM

Golang is suitable for rapid development and concurrent scenarios, and C is suitable for scenarios where extreme performance and low-level control are required. 1) Golang improves performance through garbage collection and concurrency mechanisms, and is suitable for high-concurrency Web service development. 2) C achieves the ultimate performance through manual memory management and compiler optimization, and is suitable for embedded system development.

See all articles