(Luaノート):table定義、接続、挿入、削除、並べ替え

目次
Luaテーブルの定義
Table接続、挿入、削除、並べ替え
table接続:table.concat
table挿入:table.insert
table除去:table.remove
tableソート:table.sort

Luaテーブルの定義

ケース1:

mytable = {}

mytable[1] = "Lua"  -- 

mytable[1] = nil -- 

mytable = nil  -- 

ケース2:

mytable = {}  -- 

print( type(mytable) )  -- table

ケース3:

mytable = {}

mytable[1] = "Lua"
mytable["name"]="siki"

newtable = mytable   --newtable mytable ， 

print(newtable[1])  --Lua
print(mytable[1])   --Lua

newtable[1]="C#"

print(newtable[1])   --C#
print(mytable[1])    --C#

newtable[2]="Java"

print(mytable[2])   --Java

mytable = nil
print(mytable.name)  --mytable ， 

print(newtable.name)  --siki
                      -- ， newtable = nil

Table接続、挿入、削除、並べ替え

table接続:table.concat

mytable = {"Lua","C#","Java","C++","C","abc","ABC"}

print( table.concat(mytable) )  -- table 

print( table.concat(mytable,",") ) -- table "," 

print( table.concat(mytable,",",2,4) )  -- table 2 4 "," 

 ：
LuaC#JavaC++CabcABC
Lua,C#,Java,C++,C,abc,ABC
C#,Java,C++

table挿入:table.insert

mytable = {"Lua","C#","Java","C++","C","abc","ABC"}

--mytable[6]="PHP"
mytable[#mytable+1]="PHP"

print(mytable[#mytable])

table.insert( mytable,"Javascript" )

print(mytable[#mytable])

table.insert(mytable,2,"Boo")

print(mytable[2],mytable[3])

 ：
PHP
Javascript
Boo	C#

table除去:table.remove

mytable = {"Lua","C#","Java","C++","C","abc","ABC"}

mytable[2]=nil

print(mytable[2])

table.remove(mytable,2)

print(mytable[2])

 ：
nil
Java

tableソート:table.sort

mytable={34,32,34,2,45,45,435,6,4576}

print(" ")

for k,v in ipairs(mytable) do
	print(k,v)
end
table.sort(mytable)
print(" ")
for k,v in ipairs(mytable) do
	print(k,v)
end

 ：
 
1	34
2	32
3	34
4	2
5	45
6	45
7	435
8	6
9	4576
 
1	2
2	6
3	32
4	34
5	34
6	45
7	45
8	435
9	4576