vinnyxp / ccwc

1st challenge in the Coding Challenges by John Crickett: Write Your Own wc Tool

Word Count Tool

Write Your Own wc Tool 1st challenge in the Coding Challenges by John Crickett:

Steps

While John's site has details on what to do, I want to keep a log on my approach. Link: https://codingchallenges.fyi/challenges/challenge-wc/

Step 0

IDE - VSCode

• This is alredy installed on my machine at the time of the project.

Language - Go

• I do not know Go but have been wanting to try it out for a long time now.

Step 1

What should be done?

• Read the number of bytes in a file
• Output the number of bytes in the file
• Add a "-c" CLI option
• Read the input from the CLI ("test.txt")

What did I learn?

• Assignment operator, for loop, packages, opening/closing files in Go
• CLI arguments
• CLI flags

Step 2

What should be done?

• Add a "-l" CLI option
• Output the number of lines in the file

What did I learn?

• How to use bufio to scan a file line by line

Step 3

What should be done?

• Add a "-w" CLI option
• Output the number of words in the file

What did I learn?

• ScanWords in bufio can be used to read a file word by word

Step 4

What should be done?

• Add a "-m" CLI option
• Output the number of characters in the file

What did I learn?

• ScanRunes in bufio can be used to read a file character by character

Step 5

What should be done?

• Support the default option ("-l", "-w", "-c")

What did I learn?

• Setting the default, no-option version