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Why are mutable structs “evil”?
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So if you change a copy you are changing only that copy, not the original and not any other copies which might be around.
If your struct is immutable then all automatic copies resulting from being passed by value will be the same.
If you want to change it you have to consciously do it by creating...
close vs shutdown socket?
...nderstood that if we close a socket, it means the socket will be destroyed and can be re-used later.
9 Answers
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Selenium WebDriver: Wait for complex page with JavaScript to load
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If anyone actually knew a general and always-applicable answer, it would have been implemented everywhere ages ago and would make our lives SO much easier.
There are many things you can do, but every single one of them has a problem:
As Ashwin Prabhu said,...
What is a lambda expression in C++11?
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The problem
C++ includes useful generic functions like std::for_each and std::transform, which can be very handy. Unfortunately they can also be quite cumbersome to use, particularly if the functor you would like to apply is unique to the particular function.
#include <algorithm>
#inclu...
Determine if two rectangles overlap each other?
...akes the following inputs from the user to construct rectangles (between 2 and 5): height, width, x-pos, y-pos. All of these rectangles will exist parallel to the x and the y axis, that is all of their edges will have slopes of 0 or infinity.
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What characters do I need to escape in XML documents?
... to escape all five characters in text. However, the three characters ", ' and > needn't be escaped in text:
<?xml version="1.0"?>
<valid>"'></valid>
Attributes
The safe way is to escape all five characters in attributes. However, the > character needn't be escaped in ...
How do I remove version tracking from a project cloned from git?
...t folder is hidden so make sure you turn on the Show hidden files, folders and disks option.
From there, you can run git init to create a fresh repository.
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A beginner's guide to SQL database design [closed]
...fmann Series in Data Management Systems) (Paperback) by Jan L. Harrington and found it very clear and helpful
and as you get up to speed this one was good too Database Systems: A Practical Approach to Design, Implementation and Management (International Computer Science Series) (Paperback)
I thin...
Is an array name a pointer?
...ame a pointer in C?
If not, what is the difference between an array's name and a pointer variable?
10 Answers
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Why shouldn't I use PyPy over CPython if PyPy is 6.3 times faster?
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NOTE: PyPy is more mature and better supported now than it was in 2013, when this question was asked. Avoid drawing conclusions from out-of-date information.
PyPy, as others have been quick to mention, has tenuous support for C extensions. It has...