Difference between revisions of "Basic lua: Operators"
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| end || This is used to close various queries or functions; there must be the same amount of '''end''' as '''if'''; except in instances where '''elseif''' has been used. | | end || This is used to close various queries or functions; there must be the same amount of '''end''' as '''if'''; except in instances where '''elseif''' has been used. | ||
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</syntaxhighlight> || width="200px" | [[File:lb_operators_006.png|thumb|right|180px|click to enlarge]] | </syntaxhighlight> || width="200px" | [[File:lb_operators_006.png|thumb|right|180px|click to enlarge]] | ||
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== Logical Operators == | == Logical Operators == | ||
Revision as of 15:41, 20 August 2014
Lua operators are expressions used to perform calculations or to pass arguments between different value types.
Conditional Operators
| if | Query if something does or does not meet a certain condition. |
| else | Do something else if the query condition was not met. |
| elseif | Used to add additional if queries, if the initial query condition was not met. |
| end | This is used to close various queries or functions; there must be the same amount of end as if; except in instances where elseif has been used. |
| Example 1: if condition is true (method 1) | |
|---|---|
local a = true
if a then
print("a = true")
end |
| Example 2: if condition is true (method 2) | |
|---|---|
local a = true
if a == true then
print("a = true")
end |
| Example 3: if condition is false | |
|---|---|
local a = false
if a == false then
print("a = false")
end |
| Example 4: if condition is not met, then do else | |
|---|---|
local a = false
if a then
print("a = true")
else
print("a = false")
end |
| Example 5: if condition is not met, then do elseif | |
|---|---|
local a = false
if a then
print("a = true")
elseif not a then
print("a = false")
end |
Logical Operators
| and | Allows you to check multiple conditions in a single if query. |
| or | Allows you to add an alternative if query into a single if query. |
| not | Checks if condition equals false or negative. |
| Example 3: if condition is not true | |
|---|---|
local a = false
if not a then
print("a = false")
end |
