rpn

Documentation

Overview

Package rpn defines a kind of condition pattern just like normal if condition in Golang, which trasfer string pattern to normal if condition. e.g. "N>0.3&&N<=0.8". Bit operation is not supported.

Index

• type ReversePolishNotation
  • func New(s string) (*ReversePolishNotation, error)
  • func (rpn *ReversePolishNotation) Calculate(value float64) (bool, error)

Types

type ReversePolishNotation

type ReversePolishNotation struct {
	// contains filtered or unexported fields
}

ReversePolishNotation represents a reverse polish notation.

func New

func New(s string) (*ReversePolishNotation, error)

New creates a new ReversePolishNotation with a string pattern.

func (*ReversePolishNotation) Calculate

func (rpn *ReversePolishNotation) Calculate(value float64) (bool, error)

Calculate calculate condition result with float64.