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Gracie Gregory (she/her) for The DEV Team

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What is an analogy or visualization of a coding concept that really helped you understand it better?

The format of DEV's first official podcast, DevDiscuss, begins with an interview and ends with commentary from the community.

With the season two premiere coming out soon, we want to know...

What is an analogy or visualization of a coding concept that really helped you understand it better?

Answers can range from beginning to advanced concepts!

If you'd like a chance to be featured in an episode, please send us a voice memo on this topic OR leave a comment below by Wednesday, August 12 at 5 PM PT (8 PM ET, 12 AM UTC).

Details on how to participate

  • Call our Google Voice at +1 (929)500-1513 and leave a message 📞
    Send a voice memo to pod@dev.to 🎙

  • If you don't want your voice recorded, just leave a comment here and we'll read your response aloud for you 🗣


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Top comments (26)

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vonheikemen profile image
Heiker

Some time ago someone explain concurrency using a cooking analogy. Instead of repeating what I was told, I'm going to leave this wonderful article right here.

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graciegregory profile image
Gracie Gregory (she/her)

Yes, great pick!

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kallmanation profile image
Nathan Kallman

Seeing Regular Expressions drawn into their finite state machine graphs (just circles with arrows between them).

That it's just moving from one state to another based on matching a character. And all regex could boil down to a language of four things:

  1. c match any literal character (like c)
  2. | or operation (match this or that)
  3. * loop
  4. () group

The rest of it mostly being helpful sugar.

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pomfrit123 profile image
***

Do you have link of that?

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kallmanation profile image
Nathan Kallman

Here's a graph generator; if you want to visualize what I'm talking about: regexper.com/#a(b%7Cc)*d

The explanation of the concepts came from a university course though... maybe I should do an article about this so I can link it as an explanation of what I'm talking about...

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kewbish profile image
Emilie Ma

Was learning C recently, and confused about the concept of pointers and what their point (forgive the pun) even was. Someone described it as giving someone a copy of your house instead of giving them just your address. Really helped.

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graciegregory profile image
Gracie Gregory (she/her)

Hey @kewbish ! This is awesome! Would you be interested in sending us a voice recording of this so we can feature you on the related episode of DevDiscuss coming up soon?

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kewbish profile image
Emilie Ma

Ah, definitely. I'll go try to figure out Google Voice now 🤔

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graciegregory profile image
Gracie Gregory (she/her)

Yay! Thank you so much. DM me if you need any assistance!

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mhshankar84 profile image
Hari Shankar M

One analogy that applies in more than one ways - Plumbing

  1. Input - process - Output
  2. Fork - Join
  3. Modular applications - Many plumbing components coming together
  4. Performance bottlenecks - Something stuck in the pipe. The same ideas apply in debugging and fixing them.
  5. Monitoring and Instrumentation - Water meter
  6. Queuing - FIFO, back pressure, throttling
  7. Load balancing

I think we can go on and on.

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pomfrit123 profile image
***

We are just plumbers, the fluid is json.

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graciegregory profile image
Gracie Gregory (she/her)

Hi @mhshankar84 ! Any chance you might want to submit a voice recording of this analogy so we can feature your voice on the DevDiscuss podcast soon?

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mhshankar84 profile image
Hari Shankar M

Hi Gracie, sorry, just now saw your reply.

Do you still have time for the podcast?

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iainfreestone profile image
Iain Freestone

I saw this tweet recently and thought it was a good clear visual explanations of JavaScript array methods

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tterb profile image
Brett Stevenson • Edited

I shared this one awhile ago on a different post because it helped me when I was learning how to use map, reduce and filter.

map-filter-reduce

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charlesdlandau profile image
Charles Landau

First things first, Julia Evans is IMO great at this. jvns.ca is her website. She writes "zines" with illustrated technical concepts, and they're great.

Anyway, the most helpful analogy I encountered as I was learning was to think of an interface like a light switch.

  • Hides complexity from the user
  • Exposes methods to the user (e.g. lightswitch.turn_on()
  • Is extensible
  • Is intuitive

Credit: I first came across this description in Data Structures and Algorithms in Python by Goodrich, Tamassia, and Goldwasser

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briwa profile image
briwa

The Fiscer-Yates shuffle explained beautifully by none other than the creator of D3, Mike Bostock. It's an old article but I still remember the first time reading this and my jaw dropped; simple but effective!

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stereoplegic profile image
Mike Bybee • Edited

More general, in my first degree program (SysAdmin focused, not dev), from the worst professor I've ever had except this one thing:

"This stuff is going to come at you and not make sense, you're not going to understand how it fits, and then one day it's going to dawn on you and all come together. It will be a gradual process, but the 'aha!' moment won't feel like it."

IT-wise, that was crap, because the program was a cakewalk (I just got the degree to prove that I knew what I already knew - I was valedictorian, and my cords are more meaningful to me tying up my GF with them than any sense of accomplishment I felt wearing them on the walk up to accept my degree from a school president I didn't respect), and I was basically giving up on an IT career and moving laterally into dev (formally, I'd already freelanced for years) by the time I graduated...

But I was ramping up my backend development at the time, and things did finally click for me: Frontend and Linux SysAdmin I already knew (not taught at school), backend, database, what there was of DevOps at the time, all of it suddenly began to make sense in the macro and micro.

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felipperegazio profile image
Felippe Regazio

The box model is an awesome analogy, a long time ago when i was learning css, thinking in a div (and other elements) like a box really helped me : )