Luau and C# comparison

-- Single line comment

--[[ Resulting output:
	Block comment
--]]

// Single line comment

/*
	Block comment
*/

-- Multi-line string
local multiLineString = [[This is a string that,
when printed, appears
on multiple lines]]

-- Concatenation
local s1 = "This is a string "
local s2 = "made with two parts."
local endString = s1 .. s2

// Multi-line string
string multiLineString1 = "This is a string that,\nwhen printed, appears\n on multiple lines.";

string multiLineString2 = @"This is a string that,
when printed, appears
on multiple lines";

// Concatenation
string s1 = "This is a string ";
string s2 = "made with two parts.";
string endString = s1 + s2;

local dictionary = {
	val1 = "this",
	val2 = "is"
}

print(dictionary.val1)  -- Outputs 'this'
print(dictionary["val1"])  -- Outputs 'this'

dictionary.val1 = nil  -- Removes 'val1' from table
dictionary["val3"] = "a dictionary"  -- Overwrites 'val3' or sets new key-value pair

Dictionary dictionary = new Dictionary()
{
	{ "val1", "this" },
	{ "val2", "is" }
};

Console.WriteLine(dictionary["val1"]);  // Outputs 'this'
dictionary.Remove("val1");  // Removes 'val1' from dictionary

dictionary["val3"] = "a dictionary";  // Overwrites 'val3' or sets new key-value pair
dictionary.Add("val3", "a dictionary");  // Creates a new key-value pair

local npcAttributes = {"strong", "intelligent"}

print(npcAttributes[1])  -- Outputs 'strong'
print(#npcAttributes)  -- Outputs the size of the list

-- Append to the list
table.insert(npcAttributes, "humble")
-- Another way...
npcAttributes[#npcAttributes+1] = "humble"

-- Insert at the beginning of the list
table.insert(npcAttributes, 1, "brave")

-- Remove item at a given index
table.remove(npcAttributes, 3)

List npcAttributes = new List{"strong", "intelligent"};

Console.WriteLine(npcAttributes[0]);  // Outputs 'strong'
Console.WriteLine(npcAttributes.Count);  // Outputs the size of the list

// Append to the list
npcAttributes.Add("humble");
// Another way...
npcAttributes.Insert(npcAttributes.Count, "humble");

// Insert at the beginning of the list
npcAttributes.Insert(0, "brave");

// Remove item at a given index
npcAttributes.Remove(2);

local stringVariable = "value"

-- "Public" declaration
local variableName

-- "Private" declaration - parsed the same way
local _variableName

string stringVariable = "value";

// Public declaration
public string variableName

// Private declaration
string variableName;

local outerVar = 'Outer scope text'

do
    -- Modify 'outerVar'
    outerVar = 'Inner scope modified text'
    -- Introduce a local variable
    local innerVar = 'Inner scope text'
    print('1: ' .. outerVar)    -- prints "1: Inner scope modified text"
    print('2: ' .. innerVar)    -- prints "2: Inner scope text"
end

print('3: ' .. outerVar)        -- prints "3: "Inner scope modified text"
-- Attempting to print 'innerVar' here would fail

var outerVar = "Outer scope text";

{
	// Modify 'outerVar'
	outerVar = "Inner scope modified text";
	// Introduce a local variable
	var innerVar = "Inner scope text";
	Console.WriteLine("1: " + outerVar);    // prints "1: Inner scope modified text"
	Console.WriteLine("2: " + innerVar);    // prints "2: Inner scope text"
}

Console.WriteLine("3: " + outerVar);		// prints "3: "Inner scope modified text"
// Attempting to print 'innerVar' here would fail

-- One condition
if boolExpression then
	doSomething()
end

-- Multiple conditions
if not boolExpression then
	doSomething()
elseif otherBoolExpression then
	doSomething()
else
	doSomething()
end

// One condition
if (boolExpression) {
	doSomething();
}


// Multiple conditions
if (!boolExpression) {
	doSomething();
}
else if (otherBoolExpression) {
	doSomething();
}
else {
	doSomething();
}

local max = if x > y then x else y

int max = (x > y) ? x : y;

while boolExpression do
	doSomething()
end

repeat
	doSomething()
until not boolExpression

while (boolExpression) {
	doSomething();
}

do {
	doSomething();
} while (boolExpression)

-- Forward loop
for i = 1, 10 do
	doSomething()
end

-- Reverse loop
for i = 10, 1, -1 do
	doSomething()
end

// Forward loop
for (int i = 1; i <= 10; i++) {
	doSomething();
}

// Reverse loop
for (int i = 10; i >= 1; i--) {
	doSomething();
}

local abcList = {"a", "b", "c"}

for i, v in ipairs(abcList) do
	print(v)
end

local abcDictionary = { a=1, b=2, c=3 }

for k, v in pairs(abcDictionary) do
	print(k, v)
end

List<string> abcList = new List<string>{"a", "b", "c"};

foreach (string v in abcList) {
	Console.WriteLine(v);
}

Dictionary<string, int> abcDictionary = new Dictionary<string, int>
{ {"a", 1}, {"b", 2}, {"c", 3} };


foreach (KeyValuePair<string, int> entry in abcDictionary) {
	Console.WriteLine(entry.Key + " " + entry.Value);
}

-- Generic function
local function increment(number)
	return number + 1
end

// Generic function
int increment(int number) {
	return number + 1;
}

-- Variable argument number
local function variableArguments(...)
	print(...)
end

// Variable argument number
void variableArguments(params string[] inventoryItems) {
	for (item in inventoryItems) {
		Console.WriteLine(item);
	}
}

-- Named arguments
local function namedArguments(args)
	return args.name .. "'s birthday: " .. args.dob
end

namedArguments{name="Bob", dob="4/1/2000"}

// Named arguments
string namedArguments(string name, string dob) {
	return name + "'s birthday: " + dob;
}

namedArguments(name: "Bob", dob: "4/1/2000");

local function fireWeapon()
	if not weaponEquipped then
		error("No weapon equipped!")
	end
	-- Proceed...
end

local success, errorMessage = pcall(fireWeapon)
if not success then
	print(errorMessage)
end

void fireWeapon() {
	if (!weaponEquipped) {
		// Use a user-defined exception
		throw new InvalidWeaponException("No weapon equipped!");
	}
	// Proceed...
}

try {
	fireWeapon();
} catch (InvalidWeaponException ex) {
	// An error was raised
}