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What is a memory fence?
...are concept. In higher level languages we are used to dealing with mutexes and semaphores - these may well be implemented using memory fences at the low level and explicit use of memory barriers are not necessary. Use of memory barriers requires a careful study of the hardware architecture and more ...
How to check if a string is a valid date
I have a string: "31-02-2010" and want to check whether or not it is a valid date.
What is the best way to do it?
14 Answ...
Checking if a variable is not nil and not zero in ruby
I am using the following code to check if a variable is not nil and not zero
18 Answers
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Invalidating JSON Web Tokens
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I too have been researching this question, and while none of the ideas below are complete solutions, they might help others rule out ideas, or provide further ones.
1) Simply remove the token from the client
Obviously this does nothing for server side security, but it...
How to construct a relative path in Java from two absolute paths (or URLs)?
...java.nio.file.Path#relativize(Path), it just works with parent double-dots and all.
– Campa
Feb 12 '16 at 9:40
Conside...
getResourceAsStream() vs FileInputStream
I was trying to load a file in a webapp, and I was getting a FileNotFound exception when I used FileInputStream . However, using the same path, I was able to load the file when I did getResourceAsStream() .
What is the difference between the two methods, and why does one work while the other do...
What is “rvalue reference for *this”?
...this never changes, see the bottom of this post. It's way easier to understand it with this wording though.
Next, the following code chooses the function to be called based on the ref-qualifier of the "implicit object parameter" of the function†:
// t.cpp
#include <iostream>
struct test{
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Differences between Intent and PendingIntent
I read through some articles and both seem to do the same thing and I was wondering what is the difference between starting the service like that:
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How to make my custom type to work with “range-based for loops”?
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The standard has been changed since the question (and most answers) were posted in the resolution of this defect report.
The way to make a for(:) loop work on your type X is now one of two ways:
Create member X::begin() and X::end...
What does the 'standalone' directive mean in XML?
What does the ' standalone ' directive mean in an XML document?
5 Answers
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