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Re:Ruby basics (1 viewing) (1) Guest
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TOPIC: Re:Ruby basics
#4397
ShriNi (User)
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Re:Ruby basics 3 Years, 11 Months ago Karma: 0  
Ruby Pseudo-Variables:

They are special variables that have the appearance of local variables but behave like constants. You can not assign any value to these variables.

self: The receiver object of the current method.

true: Value representing true.

false: Value representing false.

nil: Value representing undefined.

__FILE__: The name of the current source file.

__LINE__: The current line number in the source file.
 
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#4398
ShriNi (User)
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Re:Ruby basics 3 Years, 11 Months ago Karma: 0  
Ruby Basic Literals

The rules Ruby uses for literals are simple and intuitive
 
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#4399
ShriNi (User)
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Re:Ruby basics 3 Years, 11 Months ago Karma: 0  
Integer Numbers


Ruby supports integer numbers. An integer number can range from -230 to 230-1 or -262 to 262-1.

Integers with-in this range are objects of class Fixnum and integers outside this range are stored in objects of class Bignum.
 
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#4400
ShriNi (User)
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Re:Ruby basics 3 Years, 11 Months ago Karma: 0  
Floating Numbers

Ruby supports integer numbers.

They are also numbers but with decimals. Floating-point numbers are objects of class Float and can be any of the following
 
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Re:Ruby basics 3 Years, 11 Months ago Karma: 0  
String Literals


Ruby strings are simply sequences of 8-bit bytes and they are objects of class String.

Double-quoted strings allow substitution and backslash notation but single-quoted strings don't allow substitution and allow backslash notation only for \\ and \'
 
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#4402
ShriNi (User)
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Re:Ruby basics 3 Years, 11 Months ago Karma: 0  
We can substitute the value of any Ruby expression into a string using the sequence #{ expr }.
 
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