#   
#  Overview
In Ruby, the **`to_f`** method is used to return the value of a time object as a floating-point number of seconds since the #key# Epoch: An epoch is a date and time from which a computer measures system time. In ruby, Epoch is the number of seconds passed since since January 1, 1970.  #key#.


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## Syntax


# 
#  Parameters
This method takes no parameters. It is only invoked by a time object, which in our case is `timeObj`.

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## Return value
This method returns the value of the time object `timeObj` as a floating-point number of seconds since the Epoch.

##
## Example




# create time objects
t1 = Time.now # current time
t2 = Time.at(946702800)
t3 = Time.new(2021) 

# get seconds since unix epoch
# in floating point
# and print results
puts t1.to_f
puts t2.to_f
puts t3.to_f

# 
## Explanation
* **Line 2**: We use the `Time.now` to method create a time object, which is the current time or the current system time .
* **Line 3**: We create a time object by passing the number of seconds since the Unix Epoch to the `Time.at()` method.
* **Line 4**: We use the `Time.new()` method to create a time object by passing the year `2021` to it.
* **Lines 9–11**: We invoke the `to_f` method on the time objects, and print the results.

What is the time.to_f method in Ruby?

Used in Ruby, the to_f method converts a time object to floating-point seconds since the Unix Epoch starting January 1, 1970.