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Copy codeThe Code is as follows:/*** Interpreter example** @ Create_date: 2010-01-04*/Class Expression{Function interpreter ($ str){Return $ str;}}Class ExpressionNum extends Expression{Function interpreter ($ str){Switch ($ str){Case "0": return "0 ";Case "1": return "1 ";Case "2": return "2 ";Case "3": return "3 ";Case "4": return "4 ";Case "5": return "5 ";Cas

Copy codeThe Code is as follows: /** * Interpreter example * * @ Create_date: 2010-01-04 */ Class Expression { Function interpreter ($ str) { Return $ str; } } Class ExpressionNum extends Expression { Function interpreter ($ str) { Switch ($ str) { Case "0": return "0 "; Case "1": return "1 "; Case "2": return "2 "; Case "3": return "3 "; Case "4": return "4 "; C

Copy CodeThe code is as follows: /** * Interpreter Example * * @create_date: 2010-01-04 */ Class Expression { function Interpreter ($STR) { return $str; } } Class Expressionnum extends Expression { function Interpreter ($STR) { Switch ($STR) { Case "0": Return "0"; Case "1": Return "one"; Case "2": Return "two"; Case "3": Return "three"; Case "4": Return "four";

Interpreter Definition:Define the grammar of the language and create an interpreter to interpret the sentences in that language. Interpreter seems to use the surface is not very wide, it describes how a language interpreter is constituted, in practical applications, we may rarely construct a language grammar. Let's ju

OverviewGiven a language, it defines a representation of its syntax and an interpreter that uses this representation to interpret sentences in the language.ApplicabilityWhen a language needs to be interpreted and executed, and you can represent sentences in the language as an abstract syntax tree, you can use the interpreter mode. This mode works best in the following situations:This grammar is simple for c

Defined in Gof:"Defines the statements required by a programming language and provides an explanation to parse (execute) the language. ”Traditionally, the execution of program code is usually done in two waysFirst: Compile the programThe second type: InterpreterCommon use of the Interpreter programming languageIncludes scripting languages in the field of popular and web designsuch as JavaScript, PHP, Ruby, etc.These program code is written after the g

Interpreter Definition:Define the grammar of the language and create an interpreter to interpret the sentences in that language. Interpreter seems to use the surface is not very wide, it describes how a language interpreter is constituted, in practical applications, we may rarely construct a language grammar. Let's jus

Global interpreter lock -- GIL, global interpreter -- gil Reference blog: https://www.cnblogs.com/mindsbook/archive/2009/10/15/thread-safety-and-GIL.html Https://www.cnblogs.com/MnCu8261/p/6357633.html Http://python.jobbole.com/87743/I. Preface In the context of multi-core cpu, multi-thread-based programming methods that fully utilize hardware resources are constantly evolving, that is, multiple tasks can b

Interpreter mode: Creates an interpreter for the language, providing a way to evaluate the language's syntax or expression.Example: Public InterfaceExpression { Public Abstract Booleaninterpret (String context); Public classTerminalexpressionImplementsExpression {PrivateString data; Publicterminalexpression (String data) { This. data =data; } @Override Public Booleaninterpret (String context) {if(Context.c