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Is cout synchronized/thread-safe?
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The C++03 standard does not say anything about it. When you have no guarantees about the thread-safety of something, you should treat it as not thread-safe.
Of particular interest here is the fact that cout is buffered. Even if the calls to wr...
What does HTTP/1.1 302 mean exactly?
Some article I read once said that it means jumping (from one URI to another), but I detected this "302" even when there was actually no jumping at all!
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What's the best free C++ profiler for Windows? [closed]
...t not as advanced as VTune. There's also Sleepy, which is very simple, but does the job in many cases.
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What does 'var that = this;' mean in JavaScript?
...e at all. It makes it look as though just creating a variable holding this does something to the rest of the code.
– r3m0t
Jul 3 '13 at 17:27
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matplotlib does not show my drawings although I call pyplot.show()
Help required on matplotlib. Yes, I did not forget calling the pyplot.show().
14 Answers
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What does the exclamation mark mean in a Haskell declaration?
...that is, the code to execute to figure out its value. At that point, a Foo doesn't even exist yet, just the code.
But at some point someone may try to look inside it, probably through a pattern match:
case f of
Foo 0 _ _ _ -> "first arg is zero"
_ -> "first arge is someth...
What does the keyword Set actually do in VBA?
Hopefully an easy question, but I'd quite like a technical answer to this!
7 Answers
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How does password salt help against a rainbow table attack?
...y use the known salt when attempting to crack the password.
A public salt does two things: makes it more time-consuming to crack a large list of passwords, and makes it infeasible to use a rainbow table.
To understand the first one, imagine a single password file that contains hundreds of username...
What does “Changes not staged for commit” mean
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git commit -a doesn't commit everything, only the updated files, not the new ones...
– Martin
Apr 17 '19 at 19:24
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Where does 'Hello world' come from?
' hello, world ' is usually the first example for any programming language. I've always wondered where this sentence came from and where was it first used.
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