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Re:Ruby basics (1 viewing) (1) Guest
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TOPIC: Re:Ruby basics
#4469
ShriNi (User)
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Re:Ruby basics 3 Years, 10 Months ago Karma: 0  
We can use Time object to get various components of date and time.

The Time.utc, Time.gm and Time.local Functions are used to format date in standard format .
 
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#4470
ShriNi (User)
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Re:Ruby basics 3 Years, 10 Months ago Karma: 0  
We can use a Time object to get all the information related to Timezones and daylight savings .
 
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#4471
ShriNi (User)
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Re:Ruby basics 3 Years, 10 Months ago Karma: 0  
A Hash is a collection of key-value pairs like this: "employee" => "salary". It is similar to an Array, except that indexing is done via arbitrary keys of any object type, not an integer index.
 
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#4472
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Re:Ruby basics 3 Years, 10 Months ago Karma: 0  
The order in which we traverse a hash by either key or value may seem arbitrary, and will generally not be in the insertion order.


If we attempt to access a hash with a key that does not exist, the method will return nil.
 
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#4473
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Re:Ruby basics 3 Years, 10 Months ago Karma: 0  
As with arrays, there is a variety of ways to create hashes.

We can create an empty hash with the new class method

for ex months = Hash.new
 
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#4474
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Re:Ruby basics 3 Years, 10 Months ago Karma: 0  
When you access any key in a hash that has a default value, if the key or value doesn't exist, accessing the hash will return the default value:
 
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