iterator

[Gary Wessle]

dear all
I am not doing this right.

time_t Grid::n_report(const vector<time_t>& times, const time_t& now_time){
for( vector<time_t>::iterator i = times.begin(); i != times.end(); i++ ){
if( *i >= now_time ) return *i;

the iterator for the first arg is not right, how do I make it const
iter to a ref vector?

thanks

[gamediaceo]

On Jan 31, 7:01 pm, Gary Wessle <[e-mail]:

dear all
I am not doing this right.

time_t Grid::n_report(const vector<time_t>& times, const time_t& now_time){
for( vector<time_t>::iterator i = times.begin(); i != times.end(); i++ ){
if( *i >= now_time ) return *i;

the iterator for the first arg is not right, how do I make it const
iter to a ref vector?

thanks

What do you mean, the iterator is not right? What are you expecting it
to be? Do you have some sample input/output? Posting that would help
tremendously!

Cheers,
Henry

--------
http://hamath.blogspot.com - Science, technology, and interesting
stuff Blog

[gamediaceo]

Well, after creating my own test-program using essentially your code,
it would not compile with the "const" keyword in front of the
vector<time_t>& times parameter -- apparently, the iterator cannot be
created from a const vector, so leave out the const keyword in the
parameter and you should be fine.

Cheers,
Henry

--------
http://hamath.blogspot.com - Science, technology, and interesting
stuff Blog

[red floyd]

Gary Wessle wrote:

dear all
I am not doing this right.

time_t Grid::n_report(const vector<time_t>& times, const time_t& now_time){
for( vector<time_t>::iterator i = times.begin(); i != times.end(); i++ ){
if( *i >= now_time ) return *i;

the iterator for the first arg is not right, how do I make it const
iter to a ref vector?

make it a vector<time_t>::const_iterator.

[Jerry Coffin]

In article <m3************@localhost.localdomain>, ph****@yahoo.com
says...

dear all
I am not doing this right.

time_t Grid::n_report(const vector<time_t>& times, const time_t& now_time){
for( vector<time_t>::iterator i = times.begin(); i != times.end(); i++ ){
if( *i >= now_time ) return *i;

the iterator for the first arg is not right, how do I make it const
iter to a ref vector?

It sounds like you want an iterator to a constant item, which would be a
const_iterator. OTOH, it appears find_if would do the job:

std::find_if(times.begin(), times.end(),
std::bind2nd(std::greater<time_t>(), now_time));

--
Later,
Jerry.

The universe is a figment of its own imagination.