Go playground

Package validator implements value validations for structs and individual fields based on tags. They return go playground error to avoid the issue discussed in the following, where err is always!

The Go Playground is a web service that runs on go. The service receives a Go program, vets , compiles, links, and runs the program inside a sandbox, then returns the output. If the program contains tests or examples and no main function, the service runs the tests. Benchmarks will likely not be supported since the program runs in a sandboxed environment with limited resources. The article " Inside the Go Playground " describes how the playground is implemented. The playground service is used by more than just the official Go project Go by Example is one other instance and we are happy for you to use it on your own site. All we ask is that you contact us first note this is a public mailing list , that you use a unique user agent in your requests so we can identify you , and that your service is of benefit to the Go community.

Go playground

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Distributed under MIT License, please see license file within the code for more details.

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In September we introduced the Go Playground , a web service that compiles and executes arbitrary Go code and returns the program output. In this article we will take a look at how the playground is implemented and integrated with these services. The implementation involves a variant operating system environment and runtime and our description here assumes you have some familiarity with systems programming using Go. The interesting part is how we safely execute arbitrary user code in a secure environment while still providing core functionality such as time, the network, and the file system. The back end uses a special version of the gc tool chain that generates NaCl executables. This special tool chain was merged into Go 1. To learn more, read the design document. This presents a problem, however. To demonstrate concurrency effectively we need time, and to demonstrate networking and the file system we obviously need a network and a file system. Although all these things are supported today, the first version of the playground, launched in , had none of them.

Go playground

The Go Playground is a web service that runs on golang. The service receives a Go program, vets , compiles, links, and runs the program inside a sandbox, then returns the output. If the program contains tests or examples and no main function, the service runs the tests. Benchmarks will likely not be supported since the program runs in a sandboxed environment with limited resources. The article " Inside the Go Playground " describes how the playground is implemented. The playground uses the latest stable release of Go. The current version is go1. The playground service is used by more than just the official Go project Go by Example is one other instance and we are happy for you to use it on your own site. All we ask is that you contact us first note this is a public mailing list , use a unique user agent in your requests so we can identify you , and that your service is of benefit to the Go community. Any requests for content removal should be directed to security golang.

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Last commit date. Folders and files Name Name Last commit message. Handles custom field types such as sql driver Valuer see Valuer Alias validation tags, which allows for mapping of several validations to a single tag for easier defining of validations on structs Extraction of custom defined Field Name e. Package validator implements value validations for structs and individual fields based on tags. In the playground the time begins at UTC determining the significance of this date is an exercise for the reader. Feb 11, Go to file. Ability to dive into both map keys and values for validation Handles type interface by determining it's underlying type prior to validation. The playground service is used by more than just the official Go project Go by Example is one other instance and we are happy for you to use it on your own site. View all files. The article " Inside the Go Playground " describes how the playground is implemented.

Install the latest version of Go.

This project has grown large enough that more than one person is required to properly support the community. Reload to refresh your session. Learn more. Validator returns only InvalidValidationError for bad validation input, nil or ValidationErrors as type error; so, in your code all you need to do is check if the error returned is not nil, and if it's not check if error is InvalidValidationError if necessary, most of the time it isn't type cast it to type ValidationErrors like so:. Latest commit. Distributed under MIT License, please see license file within the code for more details. Branches Tags. The playground uses the latest stable release of Go. The playground service is used by more than just the official Go project Go by Example is one other instance and we are happy for you to use it on your own site. There are also limits on execution time and on CPU and memory usage. This makes it easier to cache programs by giving them deterministic output. Package validator Package validator implements value validations for structs and individual fields based on tags. There are limitations to the programs that can be run in the playground: The playground can use most of the standard library, with some exceptions.