{"author_name":"rooks","cat":"October Challenge 2010","comments":[{"author_name":"","time":"October 29, 2010 1:58 am","epoch":1288335480,"text":"The typeof operator is quite a new C++ feature.
\n Would this work? :
\n for(k.iterator it=k.begin(); it!=k.end(); ++it)","spam":"N"},{"author_name":"","time":"October 29, 2010 8:16 pm","epoch":1288401360,"text":"Not only would it work, but it’d be the appropriate C++\/STL way of iterating over a collection. Though I’m sure rooks’ foreach_ method is nothing more than a macro that expands to exactly that…","spam":"N"}],"epoch":1288324680,"likes":1,"metadata":{"p_key":"69075","p_author":"rooks","p_authorkey":"0","p_urlkey":"104878","p_title":"Foreach in c++","p_cat":"October Challenge 2010","p_event":"LD18","p_time":"1288324680","p_likes":"1","p_comments":"3","p_status":"UPD5","us_key":null,"us_name":null,"us_username":null,"event_start":"1282262400","event_key":"4","event_name":"LD18"},"text":"

Hi<\/p>\n

I created simple helper that might help few of you who use c++ with STL. It adds foreach to the c++ that traverses over all of the STL container, so the code is more readable, like in this example:<\/p>\n 

#include <cstdio><\/pre>\n 
#include <vector><\/pre>\n 
#include \"foreach.h\"<\/pre>\n 
<\/pre>\n 
int main()<\/pre>\n 
{<\/pre>\n 
    \/\/ make int vector and fill it<\/pre>\n 
    vector<int> k;<\/pre>\n 
    for (int i=0; i<10; ++i) k.push_back(i);<\/pre>\n 
<\/pre>\n 
    \/\/ show what the upper loop filled<\/pre>\n 
    foreach_ (it, k) printf(\"%i \",(*it));<\/pre>\n 
    printf(\"\\n\");<\/pre>\n 
<\/pre>\n 
    \/\/ show all the data, but get rid of 4<\/pre>\n 
    \/\/ http:\/\/en.wikipedia.org\/wiki\/Tetraphobia :)<\/pre>\n 
    foreachdel_ (it, k)<\/pre>\n 
    {<\/pre>\n 
        if (*it == 4) it=k.erase(it);<\/pre>\n 
        printf(\"%i \",(*it));<\/pre>\n 
    }<\/pre>\n 
    printf(\"\\n\");<\/pre>\n 
<\/pre>\n 
    return 0;<\/pre>\n 
}<\/pre>\n 
Will result in following:<\/p>\n 
0 1 2 3 4 5 6 7 8 9<\/pre>\n 
0 1 2 3 5 6 7 8 9<\/pre>\n 
More on my blog: \u00a0http:\/\/pleasanthacking.com\/2010\/06\/17\/foreach-in-cpp\/<\/a><\/p>\n 
I hope some of you will find it useful during compos \":)\"<\/p>\n \n 
Tags: C++<\/a>, goodies<\/a>, libraries<\/a>, libs<\/a>, tools<\/a><\/p>","time":"October 28th, 2010 10:58 pm","title":"Foreach in c++"}