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No loop for outputing elements of a vector

 
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No loop for outputing elements of a vector
jayhuang
29 Oct, 2006 - 05:38 PM
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I was thinking how to use iterators to output elements of a vector.

It is obviously easy with loops, but without loops, sounds hard for me to output the elements.

Did I miss any good stuff in iterators?
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Amadeus
RE: No Loop For Outputing Elements Of A Vector
29 Oct, 2006 - 05:57 PM
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I'm not sure I understand the question...are you asking for a way in which to display (output) all the elements in a vector without using a loop?
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jayhuang
RE: No Loop For Outputing Elements Of A Vector
29 Oct, 2006 - 09:35 PM
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QUOTE(Amadeus @ 29 Oct, 2006 - 06:57 PM) *

I'm not sure I understand the question...are you asking for a way in which to display (output) all the elements in a vector without using a loop?


yes, the only way I know to display the elements would be to use loop. Even when declare iterators, I will use loop to scan iterator from begin() to !end(). I have no idea how to do it without loop.
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Xing
RE: No Loop For Outputing Elements Of A Vector
29 Oct, 2006 - 10:01 PM
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Any good reason for not wanting to use loops ?
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Antiokus
RE: No Loop For Outputing Elements Of A Vector
30 Oct, 2006 - 08:42 AM
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print every element manually? why dont you want to use a loop?
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jayhuang
RE: No Loop For Outputing Elements Of A Vector
30 Oct, 2006 - 09:23 PM
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because I like to seek unusual ways of doing things. Loops are easy and common. I am pretty sure there is a way to do it with only iterators. My friend once showed off that technique to me and I couldn't recall that now.
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NyeNye
RE: No Loop For Outputing Elements Of A Vector
31 Oct, 2006 - 12:47 AM
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Lol

you make your own jeopardy......


their are step,..funtions..use them wisely
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gregoryH
RE: No Loop For Outputing Elements Of A Vector
31 Oct, 2006 - 02:11 AM
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QUOTE(jayhuang @ 30 Oct, 2006 - 10:23 PM) *

because I like to seek unusual ways of doing things. Loops are easy and common. I am pretty sure there is a way to do it with only iterators. My friend once showed off that technique to me and I couldn't recall that now.

Hi

Actually they are not really that unusual.

You have input and output iterators. Both are pointers and the STL implements increment and decrement operators

For input, you can try:
CODE
while ( first != last ) // add extra condition if you want to
  ++first;


For output:
CODE
while ( first != last )
  ++first;


hope this helps you.
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