How do I do an if statement in Lua?

How do I do an if statement in Lua?

In the if statement, you can use elseif and else to define additional conditions to check for: if temperature == 98.6 then….This is the syntax of an if statement:

1. temperature = 98.6.
2. if temperature == 98.6 then.
3. trace(“temperature is 98.6”) — this statement is executed.
4. end.

How do you use and operator in Lua?

How does an ‘and’ operator work in Lua?

1. Logical ‘and’ returns the first operand if that operand is false (either false or nil).
2. Logical ‘and’ returns the second argument if the first operand is true.
3. In Lua, logical and returns one of the operators as a result instead of the boolean values ‘true’ or ‘false’.

What is == in Lua?

The operator == tests for equality; the operator ~= is the negation of equality. We can apply both operators to any two values. If the values have different types, Lua considers them different values. Otherwise, Lua compares them according to their types. Lua compares numbers in the usual way.

Does Lua have if statement?

Lua – if…else statement An if statement can be followed by an optional else statement, which executes when the Boolean expression is false.

How do you end an if statement in Lua?

Lua, like most lanuages of this kind, has a “break” command that jumps out of the smallest enclosing loop. Normally you use “break” with “if” to decide when to exit the loop.

What is an operator in Lua?

An operator is a symbol that tells the interpreter to perform specific mathematical or logical manipulations. Lua language is rich in built-in operators and provides the following type of operators − Arithmetic Operators. Relational Operators.

What does the operator mean in Lua?

What is Lua used for?

As the primary focus on Lua is for scripting, it is rarely used as a standalone programming language. Instead, it is used as a scripting language that can be integrated (embedded) into other programs written in mainly C and C++. It also supports other programming languages via third-party plugins (NLua/KeraLua for .

How do I end an if statement in Lua?

What does three dots mean in Lua?

The three dots ( ) in the parameter list indicate that the function has a variable number of arguments. When this function is called, all its arguments are collected in a single table, which the function accesses as a hidden parameter named arg .

Does Lua use indentation?

The lua programming language uses a freeform syntax. This means that whitespace characters, such as space, tab characters and newline characters can be inserted into the program code for the purpose of spacing, alignment or indentation in either the horizontal or vertical directions.

How does the Lua or operator work in Lua?

The Lua or operator is a logical operator who connects more than two conditions and declares the true expression. The logical function is to declare the Boolean value of the two or more than two operands in the source code.

What’s the difference between if and end in Lua?

Words ifand thendelineate the condition to be evaluated for truth or falsehood, while words thenand enddelineate the code to be run if the condition is true, assuming there are no elseor elseifkeywords, which are discussed later. Remember there are only two values in the Lua world that are false: boolean false and nil.

Which is the negation of equality in Lua?

All these operators always result in true or false . The operator == tests for equality; the operator ~= is the negation of equality. We can apply both operators to any two values. If the values have different types, Lua considers them different values. Otherwise, Lua compares them according to their types.

Are there any false values in Lua World?

Remember there are only two values in the Lua world that are false: boolean false and nil. Any other value evaluates true. So what is a boolean expression? It could be almost anything, but here are a few: Boolean variable: if continue_flag then whatever end Boolean expression: if lineno >= first_good_lineno then whatever end