How to freeze time for testing with Carbon in Go?

Use carbon.Freeze() to set a fixed time and carbon.Now() to retrieve it, allowing consistent test environments without relying on the system clock, as documented in the README.

Carbon vs standard time package in Go: which is better?

Carbon provides a more intuitive, chainable API for common date manipulations, but if you value minimal dependencies or need full standard library compliance, time.Time is sufficient for basic operations.

Does Carbon support all time zones like PHP's Carbon?

Yes, it supports various time zones via methods like CreateFromDate with location parameters, but localization features are incomplete, so some cultural formatting may be missing.

How to add months to a date using Carbon?

Call the AddMonths() method on a Carbon instance, e.g., carbon.Now().AddMonths(3), which is chainable and simplifies arithmetic compared to manual calculations with time.Time.

Is Carbon actively maintained given its TODO list?

The README shows ongoing development with a TODO for localization and code style, but the GitHub badges indicate active builds and coverage, suggesting community involvement.

What are common pitfalls when switching from time.Time to Carbon?

Be aware of the abstraction layer that might slow performance in tight loops, and ensure compatibility by using embedded time.Time methods where needed, as Carbon is a wrapper.

carbon — Go Extension for Time Manipulation

What is carbon?

Carbon is a Go library that extends the standard time.Time package with additional functionality inspired by PHP's Carbon library. It provides a more convenient, chainable API for common date and time operations like arithmetic, comparison, and formatting while maintaining full compatibility with Go's native time package.

Target Audience

Go developers who need to perform frequent date and time manipulations, such as adding days or comparing dates, and want a more intuitive interface than the standard library offers.

Value Proposition

Developers choose Carbon because it offers an intuitive, chainable API that simplifies date handling, embeds Go's time.Time for full compatibility, and includes testing utilities like time freezing, making it a practical alternative to raw time.Time operations.

Carbon for Golang, an extension for Time

Use Cases

Best For

Performing date arithmetic like adding or subtracting days, weeks, months, or years in Go applications.
Comparing dates with convenience methods such as IsPast(), IsFuture(), or IsWeekend().
Formatting dates into common string representations without manual parsing.
Calculating differences between dates in various units like days or years.
Testing time-dependent code by freezing time with carbon.Freeze() and carbon.Now().
Working with dates across different time zones and locations, such as converting between 'America/Vancouver' and 'Europe/London'.

Not Ideal For

Projects requiring comprehensive localization and internationalization support, as Carbon's localization features are marked as incomplete in the README.
Teams that prioritize minimal dependencies and strict adherence to Go's standard library for date operations to avoid third-party overhead.
Applications where performance-critical date manipulations demand zero abstraction layers, as Carbon adds some overhead compared to raw time.Time.

Pros & Cons

Pros

Chainable API

Offers a fluent interface for date manipulations, making code more readable with methods like carbon.Now().AddDay() as shown in examples.

Full Compatibility

Embeds Go's time.Time, ensuring seamless interoperability with existing code and leveraging all native time package functionality.

Testing Utilities

Includes carbon.Freeze() and carbon.Now() for easy time freezing in tests, simplifying scenarios that depend on specific dates.

Time Zone Support

Facilitates working with multiple time zones, such as creating dates in 'America/Vancouver' and 'Europe/London', per the README examples.

Cons

Incomplete Localization

The README explicitly notes that not all localization features from PHP's Carbon are implemented, limiting use in internationalized applications.

Non-Idiomatic Code

Admits a need to improve code style to be more idiomatic Go, which could affect maintainability and community adoption.

Dependency Overhead

Introduces a third-party library where Go's standard time package might suffice, adding complexity for simple date operations.

Frequently Asked Questions

What is carbon?

Target Audience

Go developers who need to perform frequent date and time manipulations, such as adding days or comparing dates, and want a more intuitive interface than the standard library offers.

Value Proposition

Use Cases

Best For

Performing date arithmetic like adding or subtracting days, weeks, months, or years in Go applications.
Comparing dates with convenience methods such as IsPast(), IsFuture(), or IsWeekend().
Formatting dates into common string representations without manual parsing.
Calculating differences between dates in various units like days or years.
Testing time-dependent code by freezing time with carbon.Freeze() and carbon.Now().
Working with dates across different time zones and locations, such as converting between 'America/Vancouver' and 'Europe/London'.

Not Ideal For

Projects requiring comprehensive localization and internationalization support, as Carbon's localization features are marked as incomplete in the README.
Teams that prioritize minimal dependencies and strict adherence to Go's standard library for date operations to avoid third-party overhead.
Applications where performance-critical date manipulations demand zero abstraction layers, as Carbon adds some overhead compared to raw time.Time.

Pros & Cons

Pros

Chainable API

Offers a fluent interface for date manipulations, making code more readable with methods like carbon.Now().AddDay() as shown in examples.

Full Compatibility

Embeds Go's time.Time, ensuring seamless interoperability with existing code and leveraging all native time package functionality.

Testing Utilities

Includes carbon.Freeze() and carbon.Now() for easy time freezing in tests, simplifying scenarios that depend on specific dates.

Time Zone Support

Facilitates working with multiple time zones, such as creating dates in 'America/Vancouver' and 'Europe/London', per the README examples.

Cons

Incomplete Localization

The README explicitly notes that not all localization features from PHP's Carbon are implemented, limiting use in internationalized applications.

Non-Idiomatic Code

Admits a need to improve code style to be more idiomatic Go, which could affect maintainability and community adoption.

Dependency Overhead

Introduces a third-party library where Go's standard time package might suffice, adding complexity for simple date operations.

Frequently Asked Questions

carbon

What is carbon?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?

carbon

What is carbon?

Overview

Use Cases

Best For

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions

Related Projects

Found a gem we're missing?