#7 - All you need to know about Dart Packages and the Pub Package Manager

Hi there!
In this video I'll show you a complete explanation on Dart Packages, while exploring all the properties of pubpsec.yaml file, as well as the pub package manager.
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[@Flutterly]

My Complete Dart Course is now live on Udemy! Go get it while it's hot! Oh, and as a gift to my community, here's a limited-time coupon (LETSGETWCKD) helping you get it with as little as 9.99$. It's a steal for the amount of work I put in. www.udemy.com/course/dart-from-novice-to-expert/?referralCode=EC9CB6CC14FFA62C901B

[@sharbelokzan9673]

This is perfect for a flutter developers who want to up-level thier dart game 😍 In fact, a lot of flutter developers use most of these mentioned dart skills without proper understanding of what they actually mean, Thank you so much and please keep going

[@Flutterly]

Thank you so much! I really appreciate your feedback! ✨

[@arnauduquenoy75]

Super clear Dart Doctor :) superb as usual 👍

[@Flutterly]

Thank you! 🌟

[@DARKR2ID]

Your videos opens my mind to optimize my applications

[@AlanTuringWannabe]

This was very thorough and well done. Thank you.

[@ajaykotiyal427]

So Good Explanation. thanks

[@masterfabio5]

Hi Flutterly, your video is really awesome, probably the best tutorial out there, but I have a question. In 15:48, you are importing the src folder, which contains the implementation for all the used functions. Why aren't you importing the console_full_project.dart file, which contains the export for that functions? so instead of: import 'package:console_full_project/src/calculate.dart'; Why don't you just take advantage of your current package structure and do: import 'package:console_full_project/console_full_project.dart' as calculate; Thank you :)

[@leelaitw]

Thanks for your sharing!!!

[@Flutterly]

My pleasure!!

[@kevinkkirimii]

Interesting approach by dart on package management. Its quite cumbersome compared to java and go.

[@huylygia5604]

nice vid, thanks for your sharing

[@Flutterly]

Thank you too

[@earthrelated]

Esti un maestru!

[@MajedSalmaoun]

your are a legend

[@rodrigoa.6727]

I tried to run the command "time" in PowerShell terminal inside Vscode but didn't recognize . What could it be? Do I need to install something in Vscode? Thanks

[@biplabdutta]

it might not be relevant to ask this question considering this video.. But I could not figure out the differences between initializing instance variables in the initializer list vs. doing the same inside constructor. Can you help me with that?

[@Flutterly]

I don't quite understand your question, can you provide an example?

[@biplabdutta]

@@Flutterly The difference between these two codes.. and when what to use Code 1: class Student { final String name; final int age; Student(): name = 'Biplab', age = 21; } void main() { final obj = Student(); print(obj.name); } Code 2: class Student { final String name; final int age; Student(this.name, this.age); } void main() { final obj = Student('Biplab', 22); print(obj.name); } Thanks again!!

[@Flutterly]

It's the same exact thing, in code 1, you'll implicitly set them to some values, and when you instantiate the class, they will be set to that value and can't be changed during the execution, in code 2, you have the ability to instantiate the Student object with your preferred fields, but they also won't be able to change during execution since they're also final.

[@biplabdutta]

Ahhhh okayyy then.. thank you again!

[@kasandrop]

@@biplabdutta final fields can not be instantiated inside constructor body. example below will not work: Code 3: class Student { final String name; final int age; Student(){ name='Biplab'; age=22; } } Because you asked about the differences between initializing instance variables in the initializer list vs. doing the same inside constructor. Your code number 2 is not the example of the instantiation fields inside constructor body but syntactic sugar for setting fields. so case 1 and case 2 is the same.

[@markrazielfrank9422]

I f seem to have failed to link up the consolefuldart file with the calculator.. Also, there is no option for me to import the library package as you did at 15:14, please help.. any feedback from you or someone else would be greatly appreciated...

[@Osmanity]

I think we got the same problem, i am working on how to fix that, here the message I get: Publishable packages can't have path dependencies. Try adding a 'publish_to: none' entry to mark the package as not for publishing or remove the path dependency.

[@markrazielfrank9422]

@@Osmanity thanks!

[@mazenalsakkaf]

@@Osmanity hi, have you fixed it.?

[@fedibaklouti3239]

the pedantic dependency is replaced by the lints: ^3.0.0 so i always have a problem with this!

[@moviesflix7082]

bro were you having the problem with importing packages to calculate.dart which is inside lib->src

[@imankamali5799]

nice

[@Flutterly]

Thank you, iman!