Luaプログラミング例(四):Lua標準ライブラリのテーブルライブラリ、文字列ライブラリ、システムライブラリ

2057 ワード


tb1 = { "alpha","log","gamme"}

print(table.concat(tb1," , "))
print(table.concat(tb1,"
",nil,2)) print() tb1[88.99] = 'aaa' -- , print(table.maxn(tb1)) print() -- print(table.remove(tb1)) print() table.insert(tb1,'3423') table.sort(tb1) print(table.concat(tb1," , ")) function sortFunc(a,b) return a>b end table.sort(tb1,sortFunc) print(table.concat(tb1," , ")) print() print(string.len("")) print(string.len("abcd")) print(string.sub("welcome",1,3)) print(string.sub("welcome",1,-1)) print(string.sub("welcome",1,-5)) print() print(os.date()) print() do local x = os.clock() local s = 0 for i=1,100000000 do s= s+i end print(string.format("the passed time is %.2f
",os.clock()-x)) end s = "hello world" i, j = string.find(s, "hello") print(i, j) --> 1 5 print(string.sub(s, i, j)) --> hello print(string.find(s, "world")) --> 7 11 i, j = string.find(s, "l") print(i, j) --> 3 3 print(string.find(s, "lll")) --> nil s = string.gsub("Lua is super", "is","makes") print(s) s = string.gsub(s,"a","X") print(s) s = string.gsub(s,"X","a",1) print(s)

実行結果:

alpha , log , gamme
alpha
log

88.99

gamme

3423 , alpha , log
log , alpha , 3423

0
4
wel
welcome
wel

11/24/11 17:55:44

the passed time is 2.12

1 5
hello
7 11
3 3
nil
Lua makes super
LuX mXkes super
Lua mXkes super