p vs puts in Ruby

Matheus Mello
Matheus Mello
September 2, 2023
Cover Image for p vs puts in Ruby

💻💬 Welcome to the magical world of Ruby! 🌟✨ Today, we'll embark on a journey to uncover the hidden secrets of the mysterious 'p' and 'puts' methods in Ruby. 🕵️‍♀️🔎

So, you're curious if there's any difference between the enigmatic 'p' and the reliable 'puts' in Ruby, right? Well, buckle up, because we're about to dive deep into the realm of output in Ruby! 🌊💥

Let's start by understanding what 'p' and 'puts' actually do. Both of these methods allow us to display information on the screen, but they have some subtle differences. 🎥📺

🗣️ 'puts' is short for "put string" and is primarily used to output strings or objects to the console. It adds a new line after the output, so each subsequent output is displayed on a new line. For example:

puts "Hello, world!"
puts "Welcome to the Ruby universe!"

Output:

Hello, world!
Welcome to the Ruby universe!

👀🪄 On the other hand, 'p' stands for "inspect" and can be considered a more powerful cousin of 'puts'. It not only outputs the given value but also provides a representation of the object being displayed. This makes it useful for debugging purposes. It does not add a new line automatically, so subsequent outputs appear on the same line. Here's an example:

p "Hello, world!"
p "Welcome to the Ruby universe!"

Output:

"Hello, world!"
"Welcome to the Ruby universe!"

Now, let's address a common issue that arises when using 'p' and 'puts'. 🤔 Sometimes, when we're working with complex data structures, such as arrays or hashes, 'puts' might not give us the desired output. This happens because 'puts' calls the to_s method on the object being displayed, which may not provide a detailed representation. In such cases, 'p' comes to the rescue! It calls the inspect method, giving us a more informative output. 📚🖊️

For example, consider the following code:

fruits = ["apple", "banana", "orange"]
puts fruits
p fruits

Output using 'puts':

apple
banana
orange

Output using 'p':

["apple", "banana", "orange"]

Impressive, right? 🙌 Now you know how to wield the power of 'p' and 'puts' like a Ruby wizard! 🔮🧙

Before we part ways, let's engage with a little challenge: Which method would you use in the following scenario to better understand the details of an object's structure?

A. 'p' B. 'puts'

Share your answer in the comments below! Let's see who can crack the code! 🤓💬

That's a wrap, folks! 🎬 We've demystified the 'p' vs 'puts' conundrum in Ruby. Remember: 'puts' is your go-to for normal output, while 'p' is your ally for diving deep into the object structure. 💪

Happy coding and keep exploring the fascinating world of Ruby! 🚀🔥

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