operator-keyword

I am not really sure how this code works: public static boolean isUniqueChar2(String str) { int checker = 0; for (int i = 0; i < str.length(); ++i) { int val = str.charAt(i) - 'a'; System.out.println(str.charAt(i) ); System.out.println(val); if ((checker & (1 << val)) > 0) return false; checker |= (1 << val); } return true; } In particular I do not understand particular >> operator and the role of checker It looks like this method is only designed to work for lower-case letters. The checker variable is a 32-bit bitmap initialized to all 0 s. The code 1 << val takes a 1 and shifts it into the

This function is preventing Wagic: the homebrew from Compiling: /home/white/Pandora/wagic-read-only/projects/mtg/src/GameOptions.cpp:1156: error: no match for ‘operator>>’ in ‘s >> local’ Source(GameOptions.cpp): http://code.google.com/p/wagic/source/browse/trunk/projects/mtg/src/ GameOptions.cpp Source(General): http://code.google.com/p/wagic/source/browse/ (Line 1142-1172) bool GameOptionKeyBindings::read(string input) { istringstream iss(input); vector<pair<LocalKeySym, JButton> > assoc; while (iss.good()) { stringstream s; iss.get(*(s.rdbuf()), ','); iss.get(); LocalKeySym local; char sep;

My Question: I'm trying to overload the assignment operator for pointers to two different classes. Here is an example: dc.h: #ifndef DC_H_ #define DC_H_ #include "ic.h" class dc { double d; char c; public: dc(): d(0), c(0) { } dc(double d_, char c_): d(d_), c(c_) { } dc* operator=(const ic* rhs); ~dc() { } }; #endif /* DC_H_ */ class ic.h: #ifndef IC_H_ #define IC_H_ class ic { int i; char c; public: ic(): i(0), c(0) { } ic(int i_, char c_): i(i_), c(c_) { } ~ic() { } }; #endif /* IC_H_ */ dc.cpp: #include "dc.h" dc* dc::operator=(const ic* rhs) { d = rhs->i; c = rhs->c; return this; } ic.cpp:

I am a groovy newbie. Maybe this is a piece of cake, but I want to overload the + operator for arrays/lists to code like this def a= [1,1,1] def b= [2,2,2] assert [3,3,3] == a + b I wouldn't recommend globally overriding well-established behaviors. But, if you insist, this will do as you ask: ArrayList.metaClass.plus << {Collection b -> [delegate, b].transpose().collect{x, y -> x+y} } A more localized alternative would be to use a category: class PlusCategory{ public static Collection plus(Collection a, Collection b){ [a, b].transpose().collect{x, y -> x+y} } } use (PlusCategory){ assert [3, 3

enter image description here I have created a code to help me retrieving the data from csv file import re keywords = {"metal", "energy", "team", "sheet", "solar" "financial", "transportation", "electrical", "scientists", "electronic", "workers"} # all your keywords keyre=re.compile("energy",re.IGNORECASE) with open("2006-data-8-8-2016.csv") as infile: with open("new_data.csv", "w") as outfile: outfile.write(infile.readline()) # Save the header for line in infile: if len(keyre.findall(line))>0: outfile.write(line) I need it to look for each keyword in two main columns which are "position" and

I'm trying to implement a linked list. But I'm receiving an error when I try overloading the << operator. This is my program: #include<iostream> #include<stdlib.h> using namespace std; template<class T> class List; template<class T> class Node { T data; Node* next; public: Node(T val) { data = val; next = NULL; } Node(T val, Node* link) { data = val; next = link; } friend class List<T>; friend ostream& operator<<(ostream& out, List<T>* li); }; template<class T> class List { Node<T>* first; Node<T>* last; public: friend ostream& operator<< (ostream& out, List<T>* li) { if(li->first) out<<"Empty