Ruby Read Csv File Line By Line

You can read a file in ruby like this.

Ruby read csv file line by line.

Csv read method to read the complete file. Reading csv file in ruby. Use the file class to open a file. If it was a simpler file we could read it line by line and use split to cut it into parts but in this file there is a field that has a comman in it.

You open a csv file for read write or append mode and use either or puts to append a new line. See the example below. How to read files in ruby. If you don t know how the ruby file class works.

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. This is what a csv file looks like. Close the file with the close method. Require csv customers csv read customers csv.

Ruby stores each table row as an array with each cell as a string element of the array. Read the file the whole file line by line or a specific amount of bytes. Open the file with the open method. You can read a file directly.

Ruby provides csv support in the standard library and it will help us do most of the job very quickly. 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. Here is the process in detail. We use the csv.

Ruby comes with a built in csv library. Ruby comes with a standard library called csv to make it easy to read files with comman separated values.