Dart Optional Default Parameters in Function. Dart Flutter Tutorial #6.6

Access 7000+ courses for 15 days FREE: pluralsight.px...
Dart tutorial for Beginner: Learn to use parameters with default values in Dart.
Next Video : • Dart Exception Handlin...
Previous Video : • Dart Optional NAMED Pa...
Code Files: bit.ly/2RhAw1b .
.
Please donate and support my work
(If you think my free tutorials are better than paid ones :)
- Patreon: bit.ly/patreon...
- Paypal/Payoneer: [e-mail]
- UPI (only for India): smartherd@okaxis
:: If you want to develop a website or a mobile app, email me your requirement at [e-mail] :: Free demos provided beforehand ::
- Access my premium courses: bit.ly/sriyank...
Free Programming courses:
- Ruby Programming: bit.ly/smyt-r
- Dart Programming: bit.ly/smyt-d
- Kotlin Programming: bit.ly/smyt-k
- Java Programming: bit.ly/smyt-j
- Kotlin Coroutines: bit.ly/smyt-coru
Free Flutter course:
- Flutter App Development: bit.ly/2Rg7EFR
Free Android courses:
- Android using Kotlin: bit.ly/smyt-ka
- Android using Java: bit.ly/smyt-ja
- Android Material Design: bit.ly/2SMJqU6
- Android Jetpack Architecture: bit.ly/yt-j
- Android Multiple Screen Support: bit.ly/smyt-mss
- Android Retrofit: bit.ly/2Ee6GHn
More free programming courses:
- bit.ly/smy-list
Check out my website:
- bit.ly/smartherd
Let's get in touch! [Sriyank Siddhartha]
LinkedIn: bit.ly/sriyank...
Facebook: bit.ly/smarthe...
Instagram: bit.ly/sriyank...
Twitter: bit.ly/sriyank...
Github: bit.ly/smarthe...
--- Thank you for your love and support ---

[@subhanshusahani9649]

And there we go. Perfect!!

[@blueapple9135]

Thanks you so much. The way you explain makes it easy for us to understand.

[@opmovieclips8036]

perfect 😃 😂 😂

[@avi8034]

The best tutorial in youtube . Thank you sir !

[@SammarpanDasguptaOfficial]

Thanks for the best dart tutorial I have ever seen...Thanks for that amazing course...

[@emmanpictures7722]

Hello @smartherd. thanks for the great tutorial series. I love this video but I feel that strings would explain this concept better for the example rather than integers because integers multiplied in any order will give the same result but strings concatenated in different orders will show the difference more clearly. I might be wrong though and if I am I stand corrected.

[@dilungasr1322]

You're right... it would make more sense!

[@saisasisai]

Nice 👌 Tutorial series ...!

[@blackmaurya9201]

simple ,nice and clean explanation !!!!!

[@jantomczak9246]

its so nice how you explain. although im just starting with coding, i understand almost everything. thanks for your service man

[@yakine13]

DAMN I can even watch his tutorial in x1.5 Speed!! Awesome Teacher!!!

[@smartherd]

Shukriya (thank you in Hindi)

[@BarneyMyBoy]

Short and sharp. Thank you

[@SyedAlirazarizvi72]

I tried to use { int height = 10 } when defining the function, but Dart Editor produced an error mentioning I can't use "=" sign while setting default parameter value, and advised me to replace = sign with a colon ":". I used colon instead of "=" sign and it worked. But same time this equal sign is working in your example... Is there any version difference, and this usage of equal sign is obsolete in latest versions?. I am using Dark SDK 1.10.1? Please advice.

[@cybernerd7492]

update dart sdk the latest version is 2.13.0

[@karthickrajalearn]

In 1m 50sec Great Tip with Good Example 👌👌👌👌👌

[@mrnoobs7471]

Yeah

[@krishnakumarramachandran5888]

Perfect Sir👌👍😊

[@thingsforyou8644]

Really great explanation

[@hit1599]

Can default values be used for optional parameters too?

[@cybernerd7492]

yes

[@Muhammadafaqakram786]

optional named parameter is missing?

[@shivamrathore8009]

if the findvolume functions return an integer then, why you haven't specified the return type and also why the code don't provide error

[@ashfaqroy5468]

Great Great Great Great...........................................

[@m.praveenkumar3702]

Great explanation. What is the difference between [ ] & { } in function parameters

[@somtoonwuagba7448]

The square bracket [ ] is used in positional optional parameter. The curly bracket { } is used in named and default optional parameter.

[@siddarthvarma2210]

we need some notes about this whole dart sir

[@user-xv9qk3iz7b]

Brilliant!!

[@ronikarmakar5079]

Hello sir,how to use optional and named param both in a function for more restrict? please help me fast

[@rohitp9371]

Print("Great stuff. Thank you so much");

[@tusharpal7803]

p of print is small print("...");

[@unnesflash4917]

Error class Print doesnt exist . tip : do you mean print

[@mdfiroz2415]

Great

[@shivatiwari1127]

Grt👍

[@androidandro7879]

Thanks for the tutorial. They are neat and simple. I have a question in flutter we use a constructor like this : constructor({this.some_value}); some_value is a variable define in that class. Can u please explain the above constructor. Im confused where is the body of the constructor method??

[@annapurnasid]

This is a shortcut. It directly initialises the field variable some_value. So no. Need of body.

[@androidandro7879]

What if i use something like this Constructor(String some_value) { This.some_value = some_value; } Is this the same thing as above?

[@smartherd]

Both are same. The first one was just a syntactic sugar

[@opmovieclips8036]

perfect 😃 😂 😂