v1.16.2

Expr is a Go-centric expression language designed to deliver dynamic configurations with unparalleled accuracy,
safety, and speed.

program, err := expr.Compile(`now() - created_at < duration("24h")`)
output, err := expr.Run(program, env)

In this release:

• Added spans (#584)
• Added support for chained comparison 1 < 2 < 3 (#581)
• Improved builtin int: unwraps underlying int value (#611)
• Improved builtin min, max, sum, mean, median (#580, #576)
• Improved bools comparison to be without reflect.DeepEqual (#585)
• Fixed case with expr.Operator passes before expr.Env caused error (#606)
• Fixed -1 not in [] expressions (#590)

Expr Editor

The Expr Editor is an embeddable code editor written in JavaScript with full support of Expr language.

Expr Pro

Expr Pro is a set of extensions for Expr for advanced use cases. It includes expressions explanation, performance profiling, and more.

v1.16.1

Expr is a Go-centric expression language designed to deliver dynamic configurations with unparalleled accuracy,
safety, and speed.

program, err := expr.Compile(`now() - created_at < duration("24h")`)
output, err := expr.Run(program, env)

In this release:

• Fixed recursive operator overloading bug (#548, #554)
• Fixed AST printing of ?.[ operator (ffaec9e)
• Fixed string literal slicing error (#543)
• Compilation performance improvements (95084fb)
• Improved functions call performance (ed89647)
• Refactored groupBy() and sortBy() builtins (#562)
• Added operator overloading with expr.Function() (#408)
• Added concat() builtin (#565)
• Added reverse() builtin (#553)
• Added program.Locations() method (e53cefe)
• Added optional array access array?.[42] (#550)
• Added compiler optimization for jump opcodes (#545)
• Added compiler optimization for boolean operations with all, any, one, none functions (#555)

Expr Editor

The Expr Editor is an embeddable code editor written in JavaScript with
full support of Expr language.

Expr Pro

Expr Pro is a set of extensions for Expr for advanced use cases. It includes
expressions explanation, performance profiling, and more.

v1.16.0

Expr is a Go-centric expression language designed to deliver dynamic configurations with unparalleled accuracy, safety, and speed.

In this release:

• Improved VM speed by 5%-15% (#521)
• Improve AST printing for boolean operators
• Improved type checker (#527)
• Added option to override built-ins (#522)
• Added method to get AST tree from program: .Node() (#528)
• Added new Valuer patcher (#525)
• Added expr.WarnOnAny() option
• Changed expr.As*() options behavior to accept any by default
• Fixed type checker to visit all arguments of func even if arguments count mismatch
• Fixed type propagation in AST for any type in type checker
• Fixed context patcher (#526)
• Fixed race condition in working with variables (#523)
• Fixed pipeline and call parsing

Addition

In addition to open-source version of Expr, we have an embeddable Expr Editor and Expr Pro packages.

v1.15.8

Expr is a Go-centric expression language designed to deliver dynamic configurations with unparalleled accuracy,
safety, and speed.

output, err := expr.Eval(`now() - created_at < duration("24h")`, env)

In this release

• Added builtin functions for bit operations. (#496)
• Added support for raw string literals. (#485)

  `raw string`
  

• Fixed type checker panic on embedded pointer to struct field. (#500)
• Removed redundant fields from ast nodes. (#504) (#503)
• Improved Language Definition documentation.

Expr Editor

The Expr Editor is an embeddable code editor written in JavaScript with
full support of Expr language.

v1.15.7

Expr is a Go-centric expression language designed to deliver dynamic configurations with unparalleled accuracy, safety, and speed.

In this release:

• Fixed commutative property for comparison between a value and a pointer. (#490)
• Checker: forbid accessing built-ins and custom functions from $env. (#495)
• Enhanced the number parser to include support for parsing hexadecimal, binary, and octal literals. (#483)
• Added GetSource() method to vm.Program. (#491)

v1.15.6

• New module path expr-lang/epxr ⚠️
• Added expr.WithContext() option to pass context to custom functions.
• Added ast package comments.
• Hidden internal fields in vm.Program.

v1.15.5

• Added ceil(), floor() and round() function.
• Fixed type checker for float arguments.

v1.15.4

• Improved type checking for $env
• Added support for floats in sort() built-in
• Fixed: AST printing for ?? operator
• Fixed: only emit OpEqual{Int,String} for simple types
• Fixed: fetch without OpDeref (#467)
• Docs: categorize Language Definition functions (#452)
• Changed: ast.Node type now is not copied with ast.Patch

v1.15.3

• Added type checks to detect 42 in ["a"] as invalid.

v1.15.2

• Propagate uint32 func argument types in AST (#438)