![]() If this checkbox is selected, the blocks of code will be formatted in columns. If this checkbox is not selected, the blocks of code will be formatted against the closest ancestor block that starts on a new line. Use this checkbox to switch between the two possible indentation behaviors: If this checkbox is cleared, RubyMine will delete the tab characters and spaces. If this checkbox is selected, RubyMine will keep indents on the empty lines as if they contained some code. In this field, specify the number of spaces to be inserted between the elements of an array, in expressions, method declarations and method calls. In this field, specify the number of spaces to be inserted for each indent level. ![]() In this field, specify the number of spaces included in a tab. The Smart tabs checkbox is available if the Use tab character checkbox is selected. This means that a group of spaces that fits the specified tab size is automatically replaced with a tab, which may result in breaking fine alignment. If this checkbox is cleared, only tabs are used. If this checkbox is selected, the part of indentation defined by the nesting of code blocks, is made of the tabs and (if necessary) spaces, while the part of indentation defined by the alignment is made only of spaces. When the checkbox is cleared, RubyMine uses spaces instead of tabs. Ruby strings are simply sequences of 8-bit bytes and they are objects of class String.If this checkbox is selected, tab characters are used: Floating-point numbers are objects of class Float and can be any of the following − Example NOTE − Class and Objects are explained in a separate chapter of this tutorial. You can also get the integer value, corresponding to an ASCII character or escape the sequence by preceding it with a question mark. Underscore characters are ignored in the digit string. You write integers using an optional leading sign, an optional base indicator (0 for octal, 0x for hex, or 0b for binary), followed by a string of digits in the appropriate base. Integers within this range are objects of class Fixnum and integers outside this range are stored in objects of class Bignum. An integer number can range from -2 30 to 2 30-1 or -2 62 to 2 62-1. This section explains all basic Ruby Literals. The rules Ruby uses for literals are simple and intuitive. _LINE_ − The current line number in the source file. _FILE_ − The name of the current source file. Self − The receiver object of the current method. You cannot assign any value to these variables. They are special variables that have the appearance of local variables but behave like constants. The scope of a local variable ranges from class, module, def, or do to the corresponding end or from a block's opening brace to its close brace " Local variables begin with a lowercase letter or _. Puts "Total number of customers: Create Objects Puts "Customer id "Customer name "Customer address += 1 ![]() Here is an example showing the usage of class variable − Overriding class variables produce warnings with the -w option. Class variables are shared among descendants of the class or module in which the class variables are defined. Referencing an uninitialized class variable produces an error. This will produce the following result −Ĭustomer address Wisdom Apartments, LudhiyaĬustomer address New Empire road, KhandalaĬlass variables begin with and must be initialized before they can be used in method definitions. Puts "Customer id "Customer name "Customer address Create ObjectsĬust1 = Customer.new("1", "John", "Wisdom Apartments, Ludhiya")Ĭust2 = Customer.new("2", "Poul", "New Empire road, Khandala")
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