v1.14.0

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

In this release:

• New builtin functions:

  • abs, int, float, string, max, min
  • trim, trimPrefix, trimSuffix
  • upper, lower
  • split, splitN, splitAfter, splitAfterN
  • replace, repeat, join, indexOf, lastIndexOf
  • hasPrefix, hasSuffix
  • toJSON, fromJSON, toBase64, fromBase64
  • now, duration, date
  • first, last, get

• New pipe | operator.

  1..9 | filter(# < 5) | map(# * 2)
  

  To enable the pipe operator add expr.ExperimentalPipes() option.

  program, err = expr.Compile(code, expr.ExperimentalPipes())

• New repl with interactive debugger.

v1.13.0

Expr is a Go package that offers a fast, simple, and safe engine for compiling and evaluating expressions. Ideal for implementing complex logic in configuration, it serves as a foundation for a dynamic business rule engine without the need for recompiling the program.

all(Tweets, .Len <= 240)

• Refactor deref by @antonmedv in #398

v1.12.7

Expr is a Go package that offers a fast, simple, and safe engine for compiling and evaluating expressions. Ideal for implementing complex logic in configuration, it serves as a foundation for a dynamic business rule engine without the need for recompiling the program.

• Added new opcode OpInvalid for debugging purposes.

v1.12.6

What's Changed

• Churn: remove duplicate codes by @Schneizelw in #356
• Fix: fixed a compilation error. by @PranavPeshwe in #355
• Doc: update Visitor-and-Patch.md by @mdmcconnell in #369
• Feature: env[] keyword implemented in parser by @mdmcconnell in #382

New Contributors

• @Schneizelw made their first contribution in #356
• @PranavPeshwe made their first contribution in #355
• @mdmcconnell made their first contribution in #369

Full Changelog: v1.12.5...v1.12.6

v1.12.5

fb81647 Fixed param type overwriting in type propagation logic
b3fb3b9 Added a more beautiful program disassemble output

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"