token

springboot项目集成百度api: 实现证件及票据识别. 项目结构: pom.xml <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.2.2.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.ssj</groupId> <artifactId>baiduapi</artifactId> <version>0

正在看极客时间宫文学老师的 编译原理之美 ，用swift playground写了一个第二课“int age >= 45”的词法解析DEMO 为了保持原课程代码，DEMO用了顺序结构，看起来有点散乱😂，后面我再抽时间优化一下 //识别：“int age >= 45” import Foundation enum DfaState: String { case Initial = "Initial" case Id = "Id" case IntLiteral = "IntLiteral" case GT = "GT" case GE = "GE" } enum TokenType: String { case Identifier = "Identifier" case IntLiteral = "IntLiteral" case GT = "GT" case GE = "GE" } func isAlpha(_ ch:Character) -> Bool { return ch.isLetter } func isDigit(_ ch:Character) -> Bool { return ch.isNumber } class Token { var type: TokenType? var tokenText: String = "" } var newState =