# Semi colons ;
Don't use them or always use them.

Example:
```
    # Good
    name = gets.chomp
    puts("hi #{name}")

    # Also good
    name = gets.chomp;
    puts("hi #{name}");

    # Bad uses sometimes but not always or never
    name = gets.chomp
    puts("hi #{name}");
```

# Variables
## Names
Must be in the underscore_lowercase format.

Example:
```
    name = "paul"
```


## Operators
Must have a space on both sides of the operator always.

Example:
```
    # Good
    paul_is_cool = true

    # Bad
    paul_is_not_cool =false
    paul_is_not_cool=false
    paul_is_not_cool= false

    # Good
    ten = 5 + 5

    # Bad
    ten = 5+ 5
```

# functions
## Names
Function names should use underscore_lowercase.

Examples:
```
    def return_paul
        return "paul"
    end
```

## Parentheses (round brackets)
### Calls
Use parentheses whenever there is more one or more arguments. Or always use it.

Examples:
```
    # Good
    puts("Hi my name is paul") # needed
    name = gets.chomp # not needed no arguments

    puts("Hi my name is paul")
    name = gets.chomp()

    # Bad
    # inconsistent
    name = get.chomp()
    last_name = gets.chomp

    # Missing parentheses
    puts "Hi my name is paul"

```

No spaces between ( and the first argument.
No spaces between ) and the last argument.


Examples:
```
    # Good
    puts("paul is so cool")

    # Bad
    puts( "paul is not cool" )
```

### Definitions
Add parentheses if there is one or more arguments.

Example:
```
    def sum (a, b) # needed
        return a + b
    end

    def return_paul # no brackets needed
        return "paul"
    end
```

## Return
The return keyword must always be used if a function returns a value.

Example:
```
    # Good
    def return_paul
        return "Paul"
    end

    # Good becuase the function doesn't need to return anything
    def print_paul
        puts("Paul")
    end

    # Bad
    # missing return
    def return_paul
        "paul"
    end
```

# If
Don't use Parentheses or use them not both.

Example:
```
    # Good
    if name === "paul"
        puts("Woah you are so cool")
    end

    if course == "BA-CS"
        puts("Good choice")
    end

    # Good
    if (name === "paul")
        puts("Woah you are so cool")
    end

    if (course == "BA-CS")
        puts("Good choice")
    end

    #Bad becuase inconsistent
    if (name === "paul")
        puts("Woah you are so cool")
    end

    if course == "BA-CS"
        puts("Good choice")
    end
```

Always have a space between if and the condition.

Example:
```
    # Good
    if (name === "paul")
        puts("Woah you are so cool")
    end

    # Bad
    if(name === "paul")
        puts("Woah you are so cool")
    end
```

# Case
Each when should be the same level of indentation as case

Example:
```
    # Good
    case name
    when "paul"
        puts("Old name");
    when "andrew"
        puts("Okay name");
    when "john"
        puts("Great name");
    else
        puts("bad name");
    end

    # Bad
    case name
        when "paul"
            puts("Old name");
        when "andrew"
            puts("Okay name");
        when "john"
            puts("Great name");
        else
            puts("bad name");
    end

    case name
        when "paul"
        puts("Old name");
        when "andrew"
        puts("Okay name");
        when "john"
        puts("Great name");
        else
        puts("bad name");
    end


```

# Loops

## While
Same condition rules as if.

Example:
```
    while i <= 50  do
        puts("value of i is #{i}");
        i += 1;
    end
```

## For

Example:
```
    for i in 1..50 do
        puts("value of i is #{i}");
    end
```

# Indentation
Everything between the end and what the end is ending must be indented

Examples:
```
    # Good
    def its_paul
        puts("REALLY?")
    end

    def main
        name = "paul"

        if name === "paul"
            its_paul
        end
    end

    # BAD
            def its_paul
    puts("REALLY?")
    end

        def main
    name = "paul"

    if name ===             "paul"
                        its_paul
                end
    end

    # Also BAD

    def its_paul
    puts("REALLY?")
    end

    def main
    name = "paul"

    if name === "paul"
    its_paul
    end
    end

    # Also BAD

    def its_paul
            puts("REALLY?")
    end

    def main
        name = "paul"

        if name === "paul"
                its_paul
        end
    end


```