Top Forums Programming stl map - could any one explain the o/p Post 302347806 by Corona688 on Wednesday 26th of August 2009 12:30:04 PM
Old 08-26-2009
You create an object with tst(), which is later destroyed.
A temporary copy of it is made for some reason when assigning it to the map, which is later destroyed.
Another copy is created to be stored inside the map, which is later destroyed, and with it, the object.

C++'s structure tends to the redundant copying of the copied copy copies sometimes, so this isn't too suprising.

Last edited by Corona688; 08-26-2009 at 02:42 PM..

7 More Discussions You Might Find Interesting

1. Programming

STL map

Hi there, I am using the STL map and I print the map using: map <string, float> ngram_token_index ; map <string, float>::iterator map_iter ; //read the map ... // print the map for ( map_iter = ngram_token_index.begin() ; map_iter != ngram_token_index.end() ; map_iter++ ) cout << ... (2 Replies)
Discussion started by: superuser84
2 Replies

2. Programming

STL from win

Help me please with STL source code that works on Windows I've found on Inet STL MRU Cache (it compiles fine with Studio 2008), but when trying to build it with Kdevelop (g++ is the compiler) I've got a series of error. One of them I've placed in the source code. If it's important I can post here... (0 Replies)
Discussion started by: Orlando_ua
0 Replies

3. UNIX for Dummies Questions & Answers

c++ stl which rpm?

Hello, I'm using RHEL 5.3, I need to compile C++ code and I'd like to know which rpm contains the STL library. Thanks:) (3 Replies)
Discussion started by: pppswing
3 Replies

4. Programming

which stl is best suited to represent a tree

hi all i have a tree structure: root --- node 1 to node 10 in each node --- sub node 1 to sub node 10 in each sub node --- leaf node 1 to leaf node 10 i have to print this in following fashion: root ---- n1 ---- sn1 ---- l1, l2, l3, ....., l10 n1 ---- sn2 ---- l1, l2, l3,... (2 Replies)
Discussion started by: vidyaj
2 Replies

5. Programming

c++ code to print a tree using stl map

hi all, i need c++ code to print a binary or non binary tree using stl map.... please help me to find the same.......... (1 Reply)
Discussion started by: vidyaj
1 Replies

6. Programming

how to check the value in stl container during debug

Hi, guys. I am working on a project right now. But when I debug my code, I can't see the values in stl container, e.g vector, map. Can anyone help me, please. I am really frustrated:wall:. I am using code::blocks IDE, by the way. Thanks in advance...... (0 Replies)
Discussion started by: tefino
0 Replies

7. Programming

STL transform question

Hi all, I pass to the transform algorithm two vectors, and the suma function. #include <algorithm> #include <iostream> #include <iterator> #include <vector> using namespace std; class Duo{ public: int one; int two; }; Duo suma(Duo first, Duo last){ Duo ret; ... (1 Reply)
Discussion started by: santiagorf
1 Replies
FBB::mlm(3bobcat)					      OFoldStream manipulator						 FBB::mlm(3bobcat)

FBB::mlm - Manipulator modifying left margins of OFoldStream objects SYNOPSIS
#include <bobcat/ofoldstream> or #include <bobcat/ofoldstreambuf> Linking option: -lbobcat DESCRIPTION
The mlm class implements a manipulator that can be inserted into OFoldStream objects to modify the stream's left margin by a requested amount. The request cannot result in a negative left margin value. If a negative left margin would be the arithmetic result of the request then left margin 0 will silently be used. Depending on the tab-setting of the OFoldStream the inserted value represents the number of blank space characters or the number of tab-characters that will be added to the left margin. The request will be processed at the next newline character or std::flush or std::endl manipulator that is inserted into the stream. If a line is still empty once an mlm object and a flush manipulator are inserted into the stream then the new left margin will be effective at the next word inserted into that line (cf., the example section below) A bad_cast exception is thrown when the manipulator is inserted into an ostream that is not using a OFoldStreambuf buffer. NAMESPACE
FBB All constructors, members, operators and manipulators, mentioned in this man-page, are defined in the namespace FBB. INHERITS FROM
o mlm(int addValue): The standard copy constructor is available. MEMBER FUNCTIONS
There are no public or protected member functions in this class. EXAMPLE
#include <iostream> #include <bobcat/ofoldstream> using namespace std; using namespace FBB; int main() { OFoldStream out(cout, 0, 80); out << "hello world (left margin is 0)" << mlm(4) << " " "this uses a 4 character wide left margin " << mlm(-10) << flush << "left margin -6 changed to 0, active on this line "; return 0; } FILES
bobcat/mlm - defines the class interface SEE ALSO
bobcat(7), manipulators(3bobcat), lm(3bobcat), ofoldstream(3bobcat) BUGS
o bobcat_3.01.00-x.dsc: detached signature; o bobcat_3.01.00-x.tar.gz: source archive; o bobcat_3.01.00-x_i386.changes: change log; o libbobcat1_3.01.00-x_*.deb: debian package holding the libraries; o libbobcat1-dev_3.01.00-x_*.deb: debian package holding the libraries, headers and manual pages; o public archive location; BOBCAT
Bobcat is an acronym of `Brokken's Own Base Classes And Templates'. COPYRIGHT
This is free software, distributed under the terms of the GNU General Public License (GPL). AUTHOR
Frank B. Brokken ( libbobcat1-dev_3.01.00-x.tar.gz 2005-2012 FBB::mlm(3bobcat)

Featured Tech Videos

All times are GMT -4. The time now is 03:05 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy