QuickLuaTour翻译流水账(31-38)
-- Example 31 --[[ Standard Libraries Lua has standard built-in libraries for common operations in math, string, table, input/output & operating system facilities. External Libraries Numerous other libraries have been created: sockets, XML, profiling, logging, unittests, GUI toolkits, web frameworks, and many more.]]------- Output ---------- 例子 31 --[[ 标准库 Lua 有许多用于通用操作的标准的内建库，比如数学 字符串，表，输入/输出和操作系统的工具 外部库 现有的其它的库有N多：sockets, XML, 性能分析， 日志，单元测试，图形界面工具，web框架等等]]-- Example 32 -- Standard Libraries - math.-- Math functions：-- math.abs, math.cos, math.asin, math.atan, math.atan2,-- math,ceil, math.cos, math.cosh, math.deg, math.exp, math.floor,-- math.fmod, math.frexp, math,huge, math.ldexp, math.log, math.log10-- math.max, math.min, math.modf, math.pi, math.pow, math.rad,-- math.random, math.randomseed, math.sin, math.sinh, math.sqrt,-- math.tan, math.tanhprint(math,sqrt(9), math.pi)------ Output ------3 3.1415926535898-- Example 33 -- Standard Libraries - string.-- String functions:-- string.byte, string.char, string.dump, string.find, string.format,-- string.gfind, string.gsub, string.len, string.lower, string.match,-- string.rep, string.reverse, string.sub, string.upperprint(string.upper("lower"), string.rep("a", 5), string.find("abcde", "cd"))------ Output ------LOWER aaaaa 3 4-- Example 34 -- Standard Libraries - table.--Table functions:-- table.concat, table.insert, table.maxn, table.remove, table.sorta={2}table.insert(a,3);table.insert(a,4);table.sort(a,function(v1,v2) return v1 > v2 end)for i,v in ipairs(a) do print(i,v) end------ Output ------1 42 33 2-- Example 35 -- Standard Libraries - input/output.-- IO functions:-- io.close, io.flush, io.input, io.lines, io.open, io.output, io.popen,-- io.read, io.stderr, io.stdin, io.stdout, io.tmpfile, io.type, io.write,-- file:close, file:flush, file:lines, file:read,-- file:seek, file:setvbuf, file:writeprint(io.open("file doesn't exist", "r"))------ Output ------nil file doesn't exist: No such file or derectory 2-- Example 36 -- Standard Libraries - operating system facilities.-- OS functions:-- os.clock, os.date, os.difftime, os.execute, os.exit, os.getenv,-- os.remove, os.rename, os.setlocale, os.time, os.tmpnameprint(os.date())------ Output ------06/20/12 11:48:30-- Example 37 -- External Libraries-- Lua has support for external modules using the 'require' function-- INFO:A dialog will popup but it could get hidden behind the console.require("iuplua")ml = iup.multiline { expand="YES", value="Quit this multiline edit app to continue Tutorial!", border="YES" }dlg = iup.dialog{ml; title="IupMultiline", size="QUARTERxQUARTER",}dlg:show()print("Exit GUI app to continue!")iup.MainLoop()------ Output --------Exit GUI app to continue!-- Example 38 --[[ to learn more about Lua scripting see Lua Tutorials: http://lua-users.org/wiki/TutorialDirectory "Programing in Lua" Book: http://www.inf.puc-rio.br/~reberto/pil2/ Lua 5.1 Reference Manual: Start/Programs/Lua/Documentation/Lua 5.1 Reference Manual Examples Start/Programs/Lua/Examples]]------ Output -------]]?