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In coding and programming, an array is a collection of items, or data, stored in contiguous memory locations, also known as database systems . The purpose of an array is to store multiple pieces of data of the same type together.
An array is a collection of similar data elements stored at contiguous memory locations. It is the simplest data structure where each data element can be accessed directly by only using its index number.
An array type is a user-defined data type consisting of an ordered set of elements of a single data type. An ordinary array type has a defined upper bound on the number of elements and uses the ordinal position as the array index.
Arrays are used to store multiple values in a single variable, instead of declaring separate variables for each value. To create an array, define the data type (like int ) and specify the name of the array followed by square brackets [].
I'm learning the details of how each works in ruby, and I tried out the following line of code:
p [1,2,3,4,5].each { |element| el } And the result is an array of
[1,2,3,4,5] But I don't think I fully understand why. Why is the return value of each the same array? Doesn't each just provide a method for iterating? Or is it just common practice for the each method to return the original value?
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