Concise Go Text Transformation

Introduction

The Line Filters challenge is a common type of program that reads input on stdin, processes it, and then prints some derived result to stdout. The purpose of this challenge is to write a Go program that reads input text and modifies it according to specific requirements.

Skills Graph

%%%%{init: {'theme':'neutral'}}%%%% flowchart RL go(("`Go`")) -.-> go/FileOperationsGroup(["`File Operations`"]) go/FileOperationsGroup -.-> go/line_filters("`Line Filters`") subgraph Lab Skills go/line_filters -.-> lab-15406{{"`Concise Go Text Transformation`"}} end

Line Filters

The problem to be solved in this challenge is to write a Go program that reads input text from stdin, capitalizes all the letters in the text, and then prints the modified text to stdout.

Requirements

The program must read input text from stdin.
The program must capitalize all the letters in the input text.
The program must print the modified text to stdout.

Example

## To try out our line filter, first make a file with a few
## lowercase lines.
$ echo 'hello' > /tmp/lines
$ echo 'filter' >> /tmp/lines

## Then use the line filter to get uppercase lines.
$ cat /tmp/lines | go run line-filters.go
HELLO
FILTER

Summary

The Line Filters challenge requires writing a Go program that reads input text from stdin, capitalizes all the letters in the text, and then prints the modified text to stdout. This challenge is a great way to practice writing Go programs that read and modify input text.