13 replies to this topic

[jouzuna]

Hello

 

I am creating this thread so that members of the community can share useful tips and tricks they have learned during their time of scripting

 

to begin with, here a few tricks I have picked up:

 

Ternary operation

In C and other languages it is possible to use a ternary operator such as (a == 3 ? b : c) which is essentially a very short one line if statement that says:

if a is equal to three then b otherwise c

you can also do this in Lua as follows

a == 3 and b or c

Multiline string

You can write multiline strings using [[text]] such as

print([[Lorem ipsum dolor sit amet,

consectetur adipiscing elit.]])

Function parenthesis

If you are calling a function which has a single parameter of either a string or a table you can use the following syntax:

print("test") -- Valid
print "test"  -- Also valid

func({ m_test = true }) -- Valid
func { m_test = true }  -- Also valid

There are a lot more cool things you can do with Lua, if you have something you wish to share feel free to post below

 

[Zwei]

[[ string ]] is also useful if you want to use \ in your string since it will normally interpreted as a command.

 

Edit: Super thread for making code more compact <3

[CptZeyx]

Useful post for those who are starting with coding

[Zwei]

Useful post for those who are starting with coding

Nah that's more useful for advanced.

[Platypus]

function Janna:Advance(___)

do local __ = ___:lower() local function ______(__) if __[1](_) then __[2](___) end end self.____[__] = self.____[__] + 1 if self.____[__] > self._____[__] then self.____[__] = 1 end ______(self._[__][self.____[__]]) end

end

 

exists only to troll handell

[Deftsu]

you can concatenate numbers :

print(3 .. 3) -- 33

2 type of strings:

string1 = 'gg'
string2 = "gg"
if string1 == string2 then print("string1 is equal to string2") end

apostrophes (put \):

string = 'Can\'t Carry this game
print(string)

string and table length:

table = {} 
table2 = {"Hello", "World", "How", "Are", "You"}
print(#table) -- 0
print(#table2) -- 5
string1 = "ggwp"
print(#string1) -- 4
-- Or you can use :
print(string.len(string1))

... is arg:

function stuff(...)  
  for i,v in pairs(arg) do    
    print(v)  
  end
end
stuff(1,2,3,'a','b','c') -- 123abc6, the 6 is table.n

Reversing bools:

bool = true
-- if you want to reverse it you can either do
bool = false
-- or
bool = not bool

[jouzuna]

you can concatenate numbers :

print(3 .. 3) -- 33

2 type of strings:

string1 = 'gg'
string2 = "gg"
if string1 == string2 then print("string1 is equal to string2") end

apostrophes (put \):

string = 'Can\'t Carry this game
print(string)

string and table length:

table = {} 
table2 = {"Hello", "World", "How", "Are", "You"}
print(#table) -- 0
print(#table2) -- 5
string1 = "ggwp"
print(#string1) -- 4
-- Or you can use :
print(string.len(string1))

... is arg:

function stuff(...)  
  for i,v in pairs(arg) do    
    print(v)  
  end
end
stuff(1,2,3,'a','b','c') -- 123abc6, the 6 is table.n

Reversing bools:

bool = true
-- if you want to reverse it you can either do
bool = false
-- or
bool = not bool

first one I wasn't aware of thanks for sharing

[Hanndel]

function Janna:Advance(___)
do local __ = ___:lower() local function ______(__) if __[1](_) then __[2](___) end end self.____[__] = self.____[__] + 1 if self.____[__] > self._____[__] then self.____[__] = 1 end ______(self._[__][self.____[__]]) end
end
 
exists only to troll handell

**** u

[Deftsu]

commenting multiple lines :

-- instead
-- of 
-- doing this

you can just :

--[[instead
of 
doing this]]

[Inspired]

Ternary operation
In C and other languages it is possible to use a ternary operator such as (a == 3 ? b : c) which is essentially a very short one line if statement that says:
if a is equal to three then b otherwise c
you can also do this in Lua as follows

a == 3 and b or c

Reversing bools:

bool = true
-- if you want to reverse it you can either do
bool = false
-- or
bool = not bool

bool = true
bool = bool and not bool or true
print(bool)

local var1 = math.huge
local var2 = var1 - var1
if var2 == 0 then
    print("amazing")
end

local var1 = math.huge
local var2 = var1 / var1
if var2 < 0 or var2 == 0 or var2 > 0 then
    print("amazing")
end

[Zwei]

bool = true
bool = bool and not bool or true
print(bool)

local var1 = math.huge
local var2 = var1 - var1
if var2 == 0 then
    print("amazing")
end

local var1 = math.huge
local var2 = var1 / var1
if var2 < 0 or var2 == 0 or var2 > 0 then
    print("amazing")
end

 

reminds me of 

https://github.com/D...r.lua#L709-L713

[Hanndel]

reminds me of 

https://github.com/D...r.lua#L709-L713

HAHAHAHAHAHHAHAHAHA

[ilovesona]

remove key from table

tablename.keyname = nil

[Platypus]

 

remove key from table

tablename.keyname = nil

 

Instructions unclear, cped deftsu autolvl