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Re:Ruby basics (1 viewing) (1) Guest
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TOPIC: Re:Ruby basics
#4433
ShriNi (User)
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Re:Ruby basics 3 Years, 10 Months ago Karma: 0  
str.replace(other_str)


Replaces the contents and taintedness of str with the corresponding values in other_str.


str.reverse

Returns a new string with the characters from str in reverse order.

str.reverse!

Reverses str in place.
 
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#4434
ShriNi (User)
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Re:Ruby basics 3 Years, 10 Months ago Karma: 0  
Ruby arrays are ordered, integer-indexed collections of any object.

Each element in an array is associated with and referred to by an index.
 
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#4435
ShriNi (User)
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Re:Ruby basics 3 Years, 10 Months ago Karma: 0  
Array indexing starts at 0, as in C or Java.

A negative index is assumed relative to the end of the array---that is, an index of -1 indicates the last element of the array, -2 is the next to last element in the array..
 
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#4436
ShriNi (User)
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Re:Ruby basics 3 Years, 10 Months ago Karma: 0  
Ruby arrays can hold objects such as String, Integer, Fixnum, Hash, Symbol, even other Array objects.

Ruby arrays are not as rigid as arrays in other languages.

Ruby arrays grow automatically while adding elements to them.
 
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#4437
ShriNi (User)
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Re:Ruby basics 3 Years, 10 Months ago Karma: 0  
There are many ways to create or initialize an array.

One way is with the new class method:

names = Array.new
 
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#4438
ShriNi (User)
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Re:Ruby basics 3 Years, 10 Months ago Karma: 0  
We can set the size of an array at the time of creating array:

names = Array.new(20)

The array names now has a size or length of 20 elements.

we can return the size of an array with either the size or length methods:
 
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