Today I learnt the basics of Ruby...
A program written in Ruby will have a file extension with .rb(not mandatory)
Ruby program execution goes from Top-Down approach
Syntax rules in Ruby...
1.Free format
2.Case Sensitive ( AB and ab or not the same..)
3. Single line comment can be given using #, Multiple line comment using =begin and = end
Example 1(using 1- line comment) :
puts " Leader" # This is a Ruby code which outputs "Leader"
Example 2 (Using multiple line comment)
puts "Leader"
=begin
'puts' means put a string
It outputs the string in the quotes
=end
4. No delimeter for a single line.....but should use semicolon(;) for multiple statements in one line
Example 1 : puts "Leader" output : Leader
Example2 : puts "Gandhi"; puts "is a great Leader" output : Gandhi is a great Leader
Linefeed is treated like a semicolon
If a line ends with a backslash (\), the linefeed following it is ignored;
this allows us to have a single logical line that spans several lines
5. Keywords
There are around 38 keywords in Ruby.These are reserved and cannot be used for other purposes
Keywords in Ruby
aliasandBEGINbeginbreakcaseclassdefdefineddoelseelsifENDendensurefalseforifinmodulenextnilnotorredorescueretryreturnselfsuperthentrueundefunlessuntilwhenwhileyield
Note : False and Nil are reserved words in Ruby....so they can't be used as(Zero)
