runtime-error

I use ArrayList to store the 'shadows' for every rectangle in the level but when I iterate through the like this: for(int n = 0; n < shadows.size(); ++n){ g2d.fillPolygon(shadows.get(n)[0]); g2d.fillPolygon(shadows.get(n)[1]); g2d.fillPolygon(shadows.get(n)[2]); g2d.fillPolygon(shadows.get(n)[3]); g2d.fillPolygon(shadows.get(n)[4]); g2d.fillPolygon(shadows.get(n)[5]); } I get a java.lang.IndexOutOfBoundsException error that looks like this: Exception in thread "AWT-EventQueue-0" java.lang.IndexOutOfBoundsException: Index: 42, Size: 79 Why do I get the error even through the index number isn't

I was dealing with some error in my code, here is it: #!/usr/bin/env python2 # -*- coding: utf-8 -*- from BeautifulSoup import BeautifulSoup as beatsop from BeautifulSoup import SoupStrainer as sopstrain import urllib2 def html_parser(html_data): html_proc = beatsop(html_data) onlyforms = sopstrain("form") forms1 = html_proc.findAll(onlyforms) txtinput = forms1.findAll('input', {'type': 'text'}) #We take the forms that aren't text listform = ["radio", "checkbox", "password", "file", "image", "hidden"] otrimput = forms1.findAll('input', {'type': listform}) # we seach for names in text forms for

I wrote simple code to help me understand smart pointers: string s = "str"; vector <unique_ptr<string>> pv ; pv.push_back(unique_ptr<string>(&s)); cout<<*(pv[0])<<endl; This code compiles fine, but gets me a runtime error: str * Error in `...': munmap_chunk(): invalid pointer: 0x00007ffd956e57e0 * Aborted (core dumped) What happened and what have I done wrong? In the std::unique_ptr 's destructor it will call delete on the &s pointer which was not allocated via new . Just use: std::vector<std::string> vector; vector.emplace_back("str"); std::cout << pv[0] << std::endl; There's no need for std: