What is array.shift() in Perl?
Overview
The shift() method in Perl is used to return the first value of an array. It removes the first element and shifts the array list elements to the left by one.
Syntax
shift(@arr)
Parameters
@arr: This is the array whose elements we want to shift.
Return value
It returns the first element of the array after removing it from the array. However, if the array is empty, it returns -1.
Code example
# create an array@arr = ("e", "a", "b", "c", "d");# print array valuesprint "Before shift: @arr \n";# shift element@shifted_element = shift(@arr);# print shifted elementprint "Shifted Element: @shifted_element";# print array valuesprint "\nAfter shift: @arr";
Explanation
- Line 2: We create an array called
arr. - Line 5: We print the values of
arrto the console. - Line 8: We shift the first element of the array we created with the
shift()method. - Line 11: We print the shifted element.
- Line 14: We print the he new values of the array after the shift to the console.
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