https://github.com/brentp/kexpr-nim

nim wrapper for Heng Li's kexpr math expression evaluator library
https://github.com/brentp/kexpr-nim

evaluator math math-expressions nim-lang

Last synced: 3 months ago
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nim wrapper for Heng Li's kexpr math expression evaluator library

• Host: GitHub
• URL: https://github.com/brentp/kexpr-nim
• Owner: brentp
• License: other
• Created: 2017-10-04T21:08:21.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2020-11-06T15:02:15.000Z (about 4 years ago)
• Last Synced: 2024-09-20T00:04:37.106Z (4 months ago)
• Topics: evaluator, math, math-expressions, nim-lang
• Language: C
• Homepage:
• Size: 29.3 KB
• Stars: 5
• Watchers: 3
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# kexpr-nim

nim wrapper for Heng Li's kexpr math expression library

[![badge](https://img.shields.io/badge/docs-latest-blue.svg)](https://brentp.github.io/kexpr-nim/)

```Nim

var e = expression("5*6+x > 20")

e["x"] = 10

echo e.int

e["x"] = 20

echo e.int64

assert e.error() == 0

e = expression("(sample1 > 20 & sample2 > 10 & sample3 < 40")

# missing paren

assert e.error() != 0

e.clear()

e = expression("(sample1 > 20) & (sample2 > 10) & (sample3 < 40)")

e["sample1"] = 21; e["sample2"] = 65; e["sample3"] = 20

echo e.int # 1

e["sample1"] = 0

echo e.int # 0

assert e.error() == 0

echo e.float # 0.0

```

## installation

If you have nimble installed you can do:

```

nimble install kexpr

```

[![nimble](https://raw.githubusercontent.com/yglukhov/nimble-tag/master/nimble.png)](https://github.com/nim-lang/nimble)