Initializer List In C++

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6 жыл бұрын

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What Are All Those Places Where Initializer List Is Must In C++?
• What Are All Those Pla...
In this video we will learn what is the use of member initialiser list in c++ programming language.
There few points about the same as follows:
1. Constructors And Member Initializer Lists C++
2. This is used to initialize data members of classes.
Two ways are there to do this.
1. Using {} this is uniform initialization and should be preferred.
2. Using ()
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Пікірлер: 45

@benjahnz 4 жыл бұрын

A great tutrial, clear and concise. Thanks!

@maverick7615 6 жыл бұрын

omg awesome video! you have made everything become crystal clear thanks man!!

@CppNuts 6 жыл бұрын

You are most welcome dude.. :)

@mba2ceo 2 жыл бұрын

thank U !!! - NO 1 has TOLD me that :) {} make a difference

@crazymemes4080 3 ай бұрын

have you ever noticed this initializer list in LEETCODE question if you check linked list question.

@RAMANKUMAR-xl4pr 6 жыл бұрын

thanks for your knowledge sir, You made it very simple and easy. Thanks

@CppNuts 6 жыл бұрын

Thanks dude!!!

@ks-op8pe 2 жыл бұрын

informative and concise. Thx!

@CppNuts 2 жыл бұрын

Thanks

@justinhendrix3969 Жыл бұрын

Awesome video

@konstantinrebrov675 6 жыл бұрын

Thank you dear sir!

@CppNuts 6 жыл бұрын

Welcome man!!

@janardhanreddy1180 4 жыл бұрын

Awesome bro

@CppNuts 4 жыл бұрын

Thanks..

@charmingcat494 2 жыл бұрын

Hi Rupesh, I am using this textbook and a piece of code has me confused and you are the only person I could think of to ask. It seems like an object is being initialized within a function inside a class. is this possible? here is the code snippet below: void addInterest(int rate, int divisor) //function within DollarAmount class { DollarAmount interest { //DollarAmount is class name (is interest an object of DollarAmount?) (amount * rate + divisor / 2) /divisor }; //is this an initialization of interest? add(interest); } the book i am using is deitel c++ how to program and this is the example class given in chapter 5.

@sallaklamhayyen9876 2 жыл бұрын

thank you

@CppNuts 2 жыл бұрын

Welcome

@DFsdf3443d 5 жыл бұрын

but what if your member variable is an aggregate, wont it use aggregate initialization then? (which does allows narrowing - as far as i understand) im very confused about this whole initializer_list and aggregate initialization thing im sorry if this is completely wrong

@thilakraj4207 Жыл бұрын

sir could you explain the use of '(int)x' which you used in the program?....I am not aware of that.

@CppNuts Жыл бұрын

It’s called typecast.

@yc2158 6 жыл бұрын

Do we have any specific name for the " : " which is used for initializing data members?

@yc2158 6 жыл бұрын

I have to tell this "U R THE BEST". U made it simple n easy.😍👍

@CppNuts 6 жыл бұрын

As you already be knowing, it is collon, and thats the syntax for writing initializer list.

@CppNuts 6 жыл бұрын

Thank you so much.. :)

@bensalemmohamedabderrahman5844 4 жыл бұрын

how can i initialize an array of objects when its private using the initialize list?

@dokodiaries 4 жыл бұрын

@CppNuts I think you are using sublime text how to setup it for ubuntu

@CppNuts 4 жыл бұрын

I cannot explain it here, try Google and I am sure you will get. It`s pretty common

@priteeshneema1574 4 жыл бұрын

Thank You so Much Sir!! I DO HAVE ONE DOUBT: @5:01 u said {x=a} is assignment and x{a} is Initialisation. But when we do {x=a} doesnt it also perform the same operation as initialisation?

@indlamaheshkumarreddy9376 4 жыл бұрын

it is initialisation using assignment operator

@aniketahir5578 4 жыл бұрын

no..when object is constructed, compilers fills x with 0/garbage....later on the assignment is done x = a. Initialization list reduces one step...It directly initializes member with value when object is constructed.

@abrarulhaqshaik 2 жыл бұрын

@@aniketahir5578 good comment. everything is clear now, thanks :)

@aniketahir5578 2 жыл бұрын

@@abrarulhaqshaik great to know

@joelcurtis562 4 жыл бұрын

Why use a member initializer list at all? It seems like the way you initialized the member variable x to start with was very intuitive and natural. This way just seems unnecessarily complicated, so I am wondering what is the payoff of having to learn a whole new syntax when a more familiar one seems to work just fine?

@CppNuts 4 жыл бұрын

Hi Joel, good that you asked, here is the link where i have explained what are the different places where you will use initializer list. kzfaq.info/get/bejne/rNN9frt92qrLiYU.html

@bhupeshpattanaik7150 3 жыл бұрын

Where is that video that was mentioned to be in description, I found too many playlist links but no video link

@CppNuts 3 жыл бұрын

Please mention what video?

@bhupeshpattanaik7150 3 жыл бұрын

@@CppNuts pls check this timestamp 6:31

@CppNuts 3 жыл бұрын

kzfaq.info/get/bejne/rNN9frt92qrLiYU.html

@bhupeshpattanaik7150 3 жыл бұрын

@@CppNuts thanks .... 😊😀

@mapradnardev 2 жыл бұрын

when i use curely braces Base(int a):x{a} it is throwing error.Using curely braces instead of paranthesis is compiler dependent or what?

@CppNuts 2 жыл бұрын

Yes upgrade to new compiler.

@samchau8011 3 жыл бұрын

There is no link in the description where initializer list has to be used! please post it!

@CppNuts 3 жыл бұрын

Thanks Added in description. kzfaq.info/get/bejne/rNN9frt92qrLiYU.html

@videofountain 4 жыл бұрын

Is this the class constructor member initializer list? Perhaps the name of video should be changed. It was clear to hear you differentiate between initialization and assignment.

@CppNuts 4 жыл бұрын

Initializer list is used to initialize data members.