c++ skipws in string?

Question

I know how to input a text and skip white spaces, but how about when it's a string? During the code I get a string with something like

asdasd asdads asdasd asdasd

and so I need to remove all space in it. So is there some kind of way to write skipws(string_text);?

What do you mean "remove"? Do you want to construct a string with the spaces spliced out, or do you want to ignore them while iterating over it? — Potatoswatter
– Potatoswatter, Commented Apr 15, 2012 at 11:26

Potatoswatter · Accepted Answer · 2012-04-15 11:29:54Z

3

If you want to construct a string with the value asdasdasdadsasdasdasdasd, you can use the remove-erase idiom:

str.erase( std::remove( str.begin(), str.end(), ' ' ), str.end() );

or using ::isspace from <ctype.h>,

str.erase( std::remove_if( str.begin(), str.end(), ::isspace ), str.end() );

answered Apr 15, 2012 at 11:29

Potatoswatter

139k29 gold badges281 silver badges435 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Attila · Accepted Answer · 2012-04-15 11:41:08Z

0

There is no general way. You could use find/replace in tandem to do that or you could use a stringstream (initialized with your input string) and use >> to get the words without the whitespace and concatenate the results into (another/the same) string

edited Apr 15, 2012 at 11:41

answered Apr 15, 2012 at 11:26

Attila

28.9k3 gold badges50 silver badges58 bronze badges

4 Comments

sehe Over a year ago

what replace function are you referring to?

Attila Over a year ago

@sehe - std::string::replace (and std::string::find)

Potatoswatter Over a year ago

@Attila That would be O(N^2).

Attila Over a year ago

You are right. I guess that leaves stingstream :) I like your approach better anyway

Collectives™ on Stack Overflow

c++ skipws in string?

2 Answers 2

Comments

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related