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What is better, adjacency lists or adjacency matrices for graph problems in C++?

...ts or adjacency matrix, for graph problems in C++? What are the advantages and disadvantages of each? 11 Answers ...
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What is the JSF resource library for and how should it be used?

The JSF <h:outputStylesheet> , <h:outputScript> and <h:graphicImage> components have a library attribute. What is this and how should this be used? There are a lot of examples on the web which use it as follows with the common content/file type css , js and img (or ima...
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Why does 1==1==1 return true, “1”==“1”==“1” return true, and “a...

I tested the above code in Chrome's console and for some reason, a() returns true, b() returns true, and c() returns false. ...
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How can you determine a point is between two other points on a line segment?

Let's say you have a two dimensional plane with 2 points (called a and b) on it represented by an x integer and a y integer for each point. ...
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Null vs. False vs. 0 in PHP

...m told that good developers can spot/utilize the difference between Null and False and 0 and all the other good "nothing" entities. What is the difference, specifically in PHP? Does it have something to do with === ? ...
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Which is the fastest algorithm to find prime numbers?

...ly I don't think primegen is the fastest, or even the second-fastest; yafu and primesieve are both faster in general, I think, and certainly over 2^32. Both are (modified) sieves of Eratosthenes rather than the Atkin-Bernstein sieve. – Charles Aug 19 '11 at 4:...
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How should one use std::optional?

I'm reading the documentation of std::experimental::optional and I have a good idea about what it does, but I don't understand when I should use it or how I should use it. The site doesn't contain any examples as of yet which leaves it harder for me to grasp the true concept of this object. When...
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Bad class file magic or version

I already know that question has been already asked very often and answers, but no one of the answers i found fixed my problem. ...
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PHP: Convert any string to UTF-8 without knowing the original character set, or at least try

I have an application that deals with clients from all over the world, and, naturally, I want everything going into my databases to be UTF-8 encoded. ...
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How does “do something OR DIE()” work in PHP?

I'm writing a php app to access a MySQL database, and on a tutorial, it says something of the form 4 Answers ...