Ruby Read File Into Array

Although there are various ways to achieve the same results we will be focusing in just 2 of the possible ways read the file entirely with the read method or line by line with the foreach method.

Ruby read file into array.

Ruby can be used to read files. You can read a file in ruby like this. This chapter will cover all the basic i o functions available in ruby. Require csv csv read favorite foods csv or you can parse a string with csv.

Ruby comes with a built in csv library. Ruby stores each table row as an array with each cell as a string element of the array. Close the file with the close method. Require yaml then load the data.

We use the csv. Here is the process in detail. Read files in ruby read file. How to read files in ruby.

Learn ruby on rails for web development. Require csv customers csv read customers csv the customers variable is now a big array which. Read method and parse the file name as argument. Ruby provides csv support in the standard library and it will help us do most of the job very quickly.

Open the file with the open method. The class io provides all the basic methods such as read write gets puts readline getc and printf. You can read a file directly. See the example below.

These functionality ruby provides out of the box is for read files on the hard disk not on the cloud. All the i o methods are derived from the class io. You can either read a file directly into a string variable or read a file line by line. Ruby provides a whole set of i o related methods implemented in the kernel module.

This is what a csv file looks like. Id name 1 chocolate 2 bacon 3 apple 4 banana 5 almonds now you re going to learn how to use the ruby csv library to read write csv files. Config yaml load yaml string from string config yaml load file config yml from file then you can access to data just as you would any array of hashes or whatever your data structure. Read the file the whole file line by line or a specific amount of bytes.