摘要： Lua 内存垃圾回收，是自动完成的，不需要人工处理。 垃圾回收有两种模式： 1、增量式（Incremental） 有三个参数 1）、garbage-collector pause, 什么时间执行，比上次回收后内增加的比例 默认200% 最大1000% 2）、garbage-collector ste 阅读全文

摘要： 2.4 – Metatables and Metamethods Every value in Lua can have a metatable. This metatable is an ordinary Lua table that defines the behavior of the ori 阅读全文

摘要： 2.5.8 – Function Calls A function call in Lua has the following syntax: functioncall ::= prefixexp args In a function call, first prefixexp and args a 阅读全文

摘要： 2.5.7 – Table Constructors Table constructors are expressions that create tables. Every time a constructor is evaluated, a new table is created. A con 阅读全文

摘要： 2.5.1 – Arithmetic Operators Lua supports the usual arithmetic operators: the binary + (addition), - (subtraction), * (multiplication), / (division),  阅读全文

摘要： 2.5 – Expressions The basic expressions in Lua are the following: exp ::= prefixexp exp ::= nil | false | true exp ::= Number exp ::= String exp ::= f 阅读全文

摘要： 结构控制 2.4.4 – Control Structures The control structures if, while, and repeat have the usual meaning and familiar syntax: stat ::= while exp do block e 阅读全文

摘要： 变量 Variables are places that store values. There are three kinds of variables in Lua: global variables, local variables, and table fields. A single na 阅读全文

摘要： 值和类型 Lua is a dynamically typed language. This means that variables do not have types; only values do. There are no type definitions in the language. 阅读全文

摘要： 1、标识符 Names (also called identifiers) in Lua can be any string of letters, digits, and underscores, not beginning with a digit. Identifiers are used t 阅读全文