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lua 為什么可以寫成require "lpeg?

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墨色風(fēng)雨 2018-10-23 21:17:56

lua 為什么可以寫成require "lpeg

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1 回答

桃花長相依

TA貢獻(xiàn)1860條經(jīng)驗獲得超8個贊

你運行l(wèi)ua時，test1.lua和test2.lua是在當(dāng)前目錄下嗎？

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?

/tmp/ cat test1.lua
package.path = package.path .. ;./?.lua
local test2 = require(test2)

/tmp/ ~/tmp/lua-5.2.2/src/lua test1.lua 沒問題

/tmp/ rm test2.lua 刪掉test2.lua

/tmp/ ~/tmp/lua-5.2.2/src/lua test1.lua 報錯了
/home/user/tmp/lua-5.2.2/src/lua: test1.lua:2: module ;test2; not found:
no field package.preload[;test2;]
no file ;/usr/local/share/lua/5.2/test2.lua;
no file ;/usr/local/share/lua/5.2/test2/init.lua;
no file ;/usr/local/lib/lua/5.2/test2.lua;
no file ;/usr/local/lib/lua/5.2/test2/init.lua;
no file ;./test2.lua;
no file ;./test2.lua;
no file ;/usr/local/lib/lua/5.2/test2.so;
no file ;/usr/local/lib/lua/5.2/loadall.so;
no file ;./test2.so;
stack traceback:
[C]: in function ;require;
test1.lua:2: in main chunk
[C]: in ?

/tmp/ touch test2.lua 重新建立test2.lua

/tmp/ ~/tmp/lua-5.2.2/src/lua test1.lua 沒問題

/tmp/ cd ~/tmp 換到別的目錄

~/tmp/ ~/tmp/lua-5.2.2/src/lua /tmp/test1.lua 出錯了
/home/user/tmp/lua-5.2.2/src/lua: /tmp/test1.lua:2: module ;test2; not found:
no field package.preload[;test2;]
no file ;/usr/local/share/lua/5.2/test2.lua;
no file ;/usr/local/share/lua/5.2/test2/init.lua;
no file ;/usr/local/lib/lua/5.2/test2.lua;
no file ;/usr/local/lib/lua/5.2/test2/init.lua;
no file ;./test2.lua;
no file ;./test2.lua;
no file ;/usr/local/lib/lua/5.2/test2.so;
no file ;/usr/local/lib/lua/5.2/loadall.so;
no file ;./test2.so;
stack traceback:
[C]: in function ;require;
/tmp/test1.lua:2: in main chunk
[C]: in ?