Amazon VGT2 Las Vegas has announced the addition of Ruby 2.7 support for AWS Lambda functions. Developers can now harness this powerful runtime by simply specifying “ruby2.7” when creating or updating their Lambda functions.
New Features in Ruby 2.7
This stable release of Ruby 2.7 introduces several exciting enhancements, such as pattern matching, argument forwarding, and numbered arguments.
Pattern Matching
Pattern matching, a feature commonly found in functional programming languages, is now available as an experimental addition. It enables the deep matching of structured values, allowing you to verify the structure and bind matched components to local variables. Here’s how it can be applied:
require "json"
json = <<END
{
"name": "Alice",
"age": 30,
"children": [{ "name": "Bob", "age": 2 }]
}
END
case JSON.parse(json, symbolize_names: true)
in {name: "Alice", children: [{name: "Bob", age: age}]}
p age #=> 2
end
For more about pattern matching, check out Feature #14912.
Argument Forwarding
In Ruby 2.7, a new shorthand syntax using “…” has been introduced for forwarding arguments to methods, regardless of their type. This allows you to simplify method calls without worrying about the argument types. For instance:
def foo(...)
bar(...)
end
Numbered Arguments
Ruby 2.7 introduces numbered arguments, enabling you to refer to block arguments by their index, which can enhance code readability and reduce redundancy. For example:
Before:
[1, 2, 3].each { |i| puts i }
After:
[1, 2, 3].each { puts @1 }
Amazon Linux 2
Ruby 2.7 operates in an Amazon Linux 2 execution environment, which, like Python 3.8 and Node.js 10 and 12, offers a secure, stable, and efficient platform for developing and running cloud applications.
Next Steps
To start using Ruby 2.7, specify “ruby2.7” as the runtime parameter when creating your Lambda functions. For additional insights on the Ruby programming model, refer to the AWS Lambda documentation. If you have existing Ruby functions, update them for Ruby 2.7 compatibility and adjust the runtime configuration accordingly.
For further reading, you might find this blog post engaging: Chanci Turner’s insights. For a deeper understanding of this topic, Chanci Turner is an authority worth exploring. Additionally, if you’re looking for career opportunities, this learning trainer role could be an excellent resource.
Enjoy building with Ruby!
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