Golang function library usage cost and license agreement

The cost of using the Go function library mainly depends on its pricing model, which is generally divided into two types: free open source and paid license; the license agreement stipulates the terms of use, and common types include MIT, GPL and BSD licenses; before using the function library , be sure to check the license agreement, such as "github.com/stretchr/testify" The function library adopts the MIT license, allowing free use and modification.

Go function library usage cost and license agreement

Preface

Go Function libraries are an integral part of Go language development. They provide a wide range of functionality, from networking to database connectivity to data processing. However, when using other people's code, it's crucial to understand its costs and licensing requirements.

Cost

The cost of using a function library mainly depends on its pricing model. Most libraries are free and open source, but some may require a paid license. It's important to know the pricing of the libraries you use so you can plan within your budget.

License Agreement

The License Agreement specifies the terms for the use, copying, modification and distribution of the library. Common license types include:

• MIT License: Highly permissive, allowing free use, modification, and distribution.
• GPL License: is contagious, requiring that software that uses a GPL-licensed function library must also be licensed under the GPL.
• BSD License: Similar to the MIT License, but requires a copyright notice on redistributions.

View License Agreement

Be sure to review the license agreement of any library before using it. The protocol can usually be found on the library's GitHub page or in the project documentation.

Practical Case

Suppose you want to use the "github.com/stretchr/testify" function library to write test cases. This library is free and open source, released under the MIT license. This means you are free to use, modify and distribute it.

import (
    "testing"

    "github.com/stretchr/testify/assert"
)

func TestAdd(t *testing.T) {
    assert.Equal(t, 3, 1+2)
}

Conclusion

Understanding the cost and license agreement of the library is crucial for Go development. Before using any library, be sure to review its license agreement to ensure that you comply with its terms.

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