deprecated header

[Lieven]

I'm trying to use is_sorted.
When I do #include<algo.h>, I get:

/usr/include/g++/backward/backward_warning.h:32:2: warning: #warning This
file includes at least one deprecated or antiquated header. Please consider
using one of the 32 headers found in section 17.4.1.2 of the C++ standard.
Examples include substituting the <X> header for the <X.h> header for C++
includes, or <sstream> instead of the deprecated header <strstream.h>. To
disable this warning use -Wno-deprecated.


When I do #include<algorithm>, I get:

file.h:158: error: `is_sorted' undeclared (first use this function)
file.h:158: error: (Each undeclared identifier is reported only once for
each function it appears in.)

 

[Victor Bazarov]

I'm trying to use is_sorted.

There is no 'is_sorted' in Standard C++.

When I do #include<algo.h>, I get:

/usr/include/g++/backward/backward_warning.h:32:2: warning: #warning This
file includes at least one deprecated or antiquated header. Please
consider
using one of the 32 headers found in section 17.4.1.2 of the C++ standard.
Examples include substituting the <X> header for the <X.h> header for C++
includes, or <sstream> instead of the deprecated header <strstream.h>. To
disable this warning use -Wno-deprecated.


When I do #include<algorithm>, I get:

file.h:158: error: `is_sorted' undeclared (first use this function)
file.h:158: error: (Each undeclared identifier is reported only once for
each function it appears in.)

Well, there is no 'is_sorted'. You could use 'adjacent_find' with your
own predicate to see if any of the objects are not in the right order.

V

 

[Lieven De Keyzer]

Do:
#include <ext/algorithm>
You might want to look in the ext folder - it includes quite a few
useful library extensions, such as hashed containers, custom allocators,
etc.

Tom

Still doesn't work. Strangely enough only for this file. When I create a
test case it does work with #include<ext/algorithm>.

 

[Tom Widmer]

I'm trying to use is_sorted.
When I do #include<algo.h>, I get:

/usr/include/g++/backward/backward_warning.h:32:2: warning: #warning This
file includes at least one deprecated or antiquated header. Please consider
using one of the 32 headers found in section 17.4.1.2 of the C++ standard.
Examples include substituting the <X> header for the <X.h> header for C++
includes, or <sstream> instead of the deprecated header <strstream.h>. To
disable this warning use -Wno-deprecated.


When I do #include<algorithm>, I get:

file.h:158: error: `is_sorted' undeclared (first use this function)
file.h:158: error: (Each undeclared identifier is reported only once for
each function it appears in.)

Do:
#include <ext/algorithm>
You might want to look in the ext folder - it includes quite a few
useful library extensions, such as hashed containers, custom allocators,
etc.

Tom

 

[Tom Widmer]

Still doesn't work. Strangely enough only for this file. When I create a
test case it does work with #include<ext/algorithm>.

The algorithm is __gnu_cxx::is_sorted. Look in the ext/algorithm header
to see how to use it.

Also, RTFM: http://gcc.gnu.org/onlinedocs/libstdc++/faq/index.html#5_4
(and various other pages/faqs)

Tom