v1.12.4

• Fixed method calls on interfaces 1a1138d

v1.12.3

What's Changed

• Fixed nil key check in map by @antonmedv in #351
• Added Wrap and Unwrap method to hold self error by @hesining in #352

New Contributors

• @hesining made their first contribution in #352

Full Changelog: v1.12.2...v1.12.3

v1.12.2

• Fixed runtime.Fetch for named slices by @blotus in #349

New Contributors

• @blotus made their first contribution in #349

Full Changelog: v1.12.1...v1.12.2

v1.12.1

• Fixed a bug with builtins and nil argument.

v1.12.0

• Added nil coalescing operator ??.

Example:

user?.Name ?? "Anonymous"

v1.11.1

• Fixed abs() for positive numbers

v1.11.0

Expr – an expression language for Go.

This release introduces a new API for defining functions inside Expr - expr.Function.

From an Expr expression is already possible to call any Go methods and functions, but Expr has to use reflect package in doing such calls.
In previous releases, Expr added a special case for func (...any) any to avoid using reflect. But such functions lack type information. With newly added expr.Function option now it's possible to define a fast function with optional types! Read more in the docs.

atoi := expr.Function(
	"atoi",
	func(params ...any) (any, error) {
		return strconv.Atoi(params[0].(string))
	},
	new(func(string) int),
)

program, err := expr.Compile(`atoi("42")`, atoi)

Also in this release:

• Added bool condition optimization.
• Added support for comments // and /* ... */.
• Added support for negative indexes list[-1].
• Predicate brackets are now optional all(list, .values > 0).
• Added int() and float() builtins.
• Improved built-in functions performance.

v1.10.5

• Fixed call typed to exclude named functions.
• Fixed type check for in operator with any on rhs.

v1.10.4

• Fixed checker to correctly expect type cast with As*() modifiers.

v1.10.3

• Fixed nil type check.