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Why doesn't Dijkstra's algorithm work for negative weight edges?
Can somebody tell me why Dijkstra's algorithm for single source shortest path assumes that the edges must be non-negative.
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Why use pointers? [closed]
I know this is a really basic question, but I've just started with some basic C++ programming after coding a few projects with high-level languages.
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Are braces necessary in one-line statements in JavaScript?
I once heard that leaving the curly braces in one-line statements could be harmful in JavaScript. I don't remember the reasoning anymore and a Google search did not help much.
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Is it more efficient to copy a vector by reserving and copying, or by creating and swapping? [duplic
I am trying to efficiently make a copy of a vector. I see two possible approaches:
7 Answers
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What is Persistence Context?
I am new to the Java world and JPA. I was studying JPA and came across many new terms like Entity, persistence. While reading, I could not understand the exact definition for Persistence Context .
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When would you use delegates in C#? [closed]
What are your usage of delegates in C#?
20 Answers
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How are parameters sent in an HTTP POST request?
In an HTTP GET request, parameters are sent as a query string :
8 Answers
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Why use the 'ref' keyword when passing an object?
If I am passing an object to a method, why should I use the ref keyword? Isn't this the default behaviour anyway?
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How do I stop a web page from scrolling to the top when a link is clicked that triggers JavaScript?
When I have a link that is wired-up with a jQuery or JavaScript event such as:
15 Answers
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What is the difference between a symbolic link and a hard link?
Recently I was asked this during a job interview. I was honest and said I knew how a symbolic link behaves and how to create one, but do not understand the use of a hard link and how it differs from a symbolic one.
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