Programming Forums > Application Development > Java

b1g4L · Mar 17th, 2006, 1:16 PM

I'm confused by this assignment statement. Why is there two variables on the right, and what would this statement be equivilent to?

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Node newNode = variable1, variable2;

jaeusm · Mar 17th, 2006, 2:37 PM

It is equivalent to:

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Node newNode = variable1;
Node variable2;

ReggaetonKing · Mar 17th, 2006, 5:43 PM

Quote:

Originally Posted by jaeusm

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Node newNode = variable1;
Node variable2;

Can't make it any more simplier!

Dameon · Mar 17th, 2006, 6:32 PM

Yes. Though the occurences of such a statement in the real world are few and far between, for reasons obvious.

titaniumdecoy · Mar 17th, 2006, 8:30 PM

Just so it's crystal clear, you can think about it this way:

You can declare two or more variables on one line by separating them with a comma, for example:

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int one, two, three;

This code will create the three uninitialized int variables, one, two, and three.

You can also initialize the variables at the same time you declare them:

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int one = 1, two = 2, three = 3;

In the case of the code you posted, the first variable is initialized a value and the second is not. This is obviously bad practice, as Dameon pointed out, since it will confuse most people who are not familiar with your code.

ReggaetonKing · Mar 17th, 2006, 8:33 PM

I think though, it could save a lot of lines of code when making a program. I do initialize my variables like that when I program. Though, as said before, people who are novice at programming will be confused when reading it.

xavier · Mar 18th, 2006, 12:25 AM

Oh comone , how many lines of code? 2, 3 ? 10 ?
I hate when people do : int a, b, c;
It's much better :
int a ; // a cute comment
int b ; // a cute comment
int c ; // a cute comment

Even if the variables have meaningful names for you, a bit of comment won't hurt.

ReggaetonKing · Mar 18th, 2006, 9:34 AM

Quote:

Originally Posted by xavier

Oh comone , how many lines of code? 2, 3 ? 10 ?
I hate when people do : int a, b, c;
It's much better :
int a ; // a cute comment
int b ; // a cute comment
int c ; // a cute comment

Even if the variables have meaningful names for you, a bit of comment won't hurt.

yea, when you write a < 100 line program. How about 20+ lines when you write a program thats large enough to take you weeks to write. Everyone has their way of writing code. And who said you can't have a comment when doing that. Why does someone have to comment every single variable? Even if they do, you can still write the comment on the same line where you intialized the variables. I dont see what the big deal is here, its the same variable type.

xavier · Mar 18th, 2006, 11:45 AM

Well , i didn't mean ALL the lines obviously. Just that i consider writing variables on the same line bad practice.

But hey , it's a free world

ReggaetonKing · Mar 18th, 2006, 11:16 PM

it's all good!

Mar 17th, 2006, 1:16 PM	#1
b1g4L Programmer Join Date: Dec 2005 Location: SC Posts: 38 Rep Power: 0	assignment question I'm confused by this assignment statement. Why is there two variables on the right, and what would this statement be equivilent to? (Toggle Plain Text) Node newNode = variable1, variable2; Node newNode = variable1, variable2;

Mar 17th, 2006, 2:37 PM	#2
jaeusm Programmer Join Date: Feb 2006 Location: Columbus, OH Posts: 84 Rep Power: 3	It is equivalent to: (Toggle Plain Text) Node newNode = variable1; Node variable2; Node newNode = variable1; Node variable2;

Mar 17th, 2006, 6:32 PM	#4
Dameon Troll Join Date: Apr 2005 Location: Texas Posts: 732 Rep Power: 4	Yes. Though the occurences of such a statement in the real world are few and far between, for reasons obvious. __________________ MD5(sig) = bcef75433db02e9ad9bf81d6f7c5c270

Mar 17th, 2006, 8:30 PM	#5
titaniumdecoy Expert Programmer Join Date: Nov 2005 Posts: 839 Rep Power: 3	Just so it's crystal clear, you can think about it this way: You can declare two or more variables on one line by separating them with a comma, for example: (Toggle Plain Text) int one, two, three; int one, two, three; This code will create the three uninitialized int variables, one, two, and three. You can also initialize the variables at the same time you declare them: (Toggle Plain Text) int one = 1, two = 2, three = 3; int one = 1, two = 2, three = 3; In the case of the code you posted, the first variable is initialized a value and the second is not. This is obviously bad practice, as Dameon pointed out, since it will confuse most people who are not familiar with your code.

Mar 17th, 2006, 8:33 PM	#6
ReggaetonKing Sexy Programmer Join Date: Nov 2005 Location: New Jersey Posts: 891 Rep Power: 3	I think though, it could save a lot of lines of code when making a program. I do initialize my variables like that when I program. Though, as said before, people who are novice at programming will be confused when reading it. __________________ I would love to change the world, but they won't give me the source code!

Mar 18th, 2006, 12:25 AM	#7
xavier Professional Programmer Join Date: Oct 2004 Location: .ro Posts: 378 Rep Power: 4	Oh comone , how many lines of code? 2, 3 ? 10 ? I hate when people do : int a, b, c; It's much better : int a ; // a cute comment int b ; // a cute comment int c ; // a cute comment Even if the variables have meaningful names for you, a bit of comment won't hurt. __________________ Don't take life too seriously, it's not permanent !

Mar 18th, 2006, 11:45 AM	#9
xavier Professional Programmer Join Date: Oct 2004 Location: .ro Posts: 378 Rep Power: 4	Well , i didn't mean ALL the lines obviously. Just that i consider writing variables on the same line bad practice. But hey , it's a free world __________________ Don't take life too seriously, it's not permanent !

Mar 18th, 2006, 11:16 PM	#10
ReggaetonKing Sexy Programmer Join Date: Nov 2005 Location: New Jersey Posts: 891 Rep Power: 3	it's all good! __________________ I would love to change the world, but they won't give me the source code!

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Programming Forums > Application Development > Java

assignment question