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    JWTs done right: Quebec's proof of vaccination Computer Science

    June 02, 2021
    Computer Science: Theory and Application

    JWTs done right: Quebec's proof of vaccination Computer Science

    JWTs done right: Quebec's proof of vaccination

    Posted: 02 Jun 2021 04:09 AM PDT

    Nanotech Researchers Create The World’s Smallest Origami Bird

    Posted: 01 Jun 2021 06:20 AM PDT

    Every year, we lay flowers at Alan Turing's statue in Manchester for his Birthday, who wants to send some?

    Posted: 02 Jun 2021 05:09 AM PDT

    This is a crosspost from r/math, but probably belongs here more...

    Alan Turing's Birthday is on the 23rd of June. We're going to make it special.

    Every year, people from Reddit pledge bunches of flowers to be placed at Alan Turing's statue in Manchester in the UK for his birthday. In the process we raise money for the amazing charity Special Effect, which helps people with disabilities access computer games.

    Since 2013 we've raised about £7600 doing this, and we'd like 2021 to be our biggest year ever. Anyone who wants to get involved is welcome. Donations are made up of £3.50 to cover the cost of your flowers and a £14 charity contribution to Special Effect for a total of £17.50.

    Manchester city council have confirmed they are fine with it, and we have people in Manchester who will help handle the set up and clean up.

    To find out more and to donate, click here. So far, r/math and r/unitedkingdom have got us up to about £700, which is absolutely fantastic.

    Joe

    submitted by /u/joereddington
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    How to really fix undefined reference to `newuser::inputusername()''? I'm pretty sure I linked them correctly.

    Posted: 01 Jun 2021 08:53 PM PDT

    newuser.o: In function `newuser::inputusername()': newuser.cpp:(.text+0x21): undefined reference to `newuser::username[abi:cxx11]'

    makefile

    CC = g++ TARGET3 = 3 TARGET5 = newuser FLAG = -std=c++11 all: $(TARGET3).cpp $(TARGET5).cpp $(CC) $(FLAG) -c $(TARGET3).cpp $(TARGET5).cpp $(CC) $(FLAG) -o $(TARGET3) $(TARGET3).o $(TARGET5).

    newuser.h

    #include<iostream> using namespace std; #ifndef NEWUSER_H #define NEWUSER_H namespace newuser{ string username; string password; void inputusername(); void inputpassword(); string getusername(); string getpassword(); }
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