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Why do we use volatile keyword? [duplicate]
I have never used it but I wonder why people use it? What does it exactly do? I searched the forum, I found it only C# or Java topics.
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Move capture in lambda
...move the unique_ptr into the lambda
go.run( [ u{move(u)} ] { do_something_with( u ); } );
But it is much more general in the sense that captured variables can be initialized with anything like so:
auto lambda = [value = 0] mutable { return ++value; };
In C++11 this is not possible yet, but wit...
Declaring variables inside loops, good practice or bad practice?
...les inside loops, you ensure their scope is restricted to inside the loop. It cannot be referenced nor called outside of the loop.
This way:
If the name of the variable is a bit "generic" (like "i"), there is no risk to mix it with another variable of same name somewhere later in your code (can a...
Good examples of Not a Functor/Functor/Applicative/Monad?
...ewtype T a = T (a -> Int)
You can make a contravariant functor out of it, but not a (covariant) functor. Try writing fmap and you'll fail. Note that the contravariant functor version is reversed:
fmap :: Functor f => (a -> b) -> f a -> f b
contramap :: Contravariant f ...
Are nested HTML comments possible?
as per the title; is it possible to have nested comments in valid HTML? see the example below...
10 Answers
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Really weird eclipse keyboard behavior/bug?
...E: 7/11/2017 I've not had this problem reoccur in a couple of years now. Either Eclipse fixed the problems or a more recent version of Mac OSX has fixed something. For the record I'm running Eclipse 4.5.2 on OSX 10.11.6.
UPDATE: 4/29/2011 Now it looks like this is not a Workspace or keyboard pref...
Change the current directory from a Bash script
Is it possible to change current directory from a script?
15 Answers
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jQuery: Check if div with certain class name exists
...e is a truthy value at the first ([0]) index, then assume class exists.
Edit 04/10/2013: I've created a jsperf test case here.
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Is Python interpreted, or compiled, or both?
...ight save a few words saying the language is interpreted/compiled too, but it's still an important distinction, both because it aids understanding and because there are quite a few languages with usable implementations of both kinds (mostly in the realm of functional languages, see Haskell and ML). ...
Difference between encoding and encryption
...data into another format using a scheme that is publicly available so that it can easily be reversed.
Encryption transforms data into another format in such a way that only specific individual(s) can reverse the transformation.
For Summary -
Encoding is for maintaining data usability and uses sch...