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Create two blank lines in Markdown
...o me these tags sort of ruin my document if I want it to also look good as raw text.
– Kyle Delaney
Oct 25 '17 at 14:43
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What is the usefulness of `enable_shared_from_this`?
...r this reason you must never create more than one shared_ptr from the same raw pointer.
– j_random_hacker
Apr 3 '09 at 2:31
4
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What causes javac to issue the “uses unchecked or unsafe operations” warning
...switch, it will give you more detailed information.
As well as the use of raw types (as described by the other answers), an unchecked cast can also cause the warning.
Once you've compiled with -Xlint, you should be able to rework your code to avoid the warning. This is not always possible, partic...
Move capture in lambda
...rref.move(); };
assert( lambda() );
assert( !lambda() );
}
The drawback here is that lambda is copyable and when copied the assertion in the copy constructor of rref_impl fails leading to a runtime bug. The following might be a better and even more generic solution because the compiler wi...
How do I prompt for Yes/No/Cancel input in a Linux shell script?
....)
echo -n "Is this a good question (y/n)? "
old_stty_cfg=$(stty -g)
stty raw -echo ; answer=$(head -c 1) ; stty $old_stty_cfg # Careful playing with stty
if echo "$answer" | grep -iq "^y" ;then
echo Yes
else
echo No
fi
Note: This was tested under sh, bash, ksh, dash and busybox!
Same, b...
Convert audio files to mp3 using ffmpeg
... input streams this option only makes sense for audio grabbing devices and raw demuxers and is mapped to the corresponding demuxer options.
-ac - Set the number of audio channels. For output streams it is set by default to the number of input audio channels. For input streams this option only ma...
When someone writes a new programming language, what do they write it IN?
...ely of binary numbers that are a direct one-to-one correspondence with the raw language of the computer itself.
But it still doesn't end. Even a file with just raw numbers in it still needs translation. You still need to get those raw numbers in a file into the computer.
Well believe it or not the...
How does grep run so fast?
...actually looks at (and it skips many
bytes entirely).
GNU grep uses raw Unix input system calls and avoids copying data
after reading it. Moreover, GNU grep AVOIDS BREAKING THE INPUT INTO
LINES. Looking for newlines would slow grep down by a factor of
several times, because to find th...
Mercurial Eclipse Plugin
...alEclipse
Update site: https://bitbucket.org/mercurialeclipse/update-site/raw/default/
Installation manual
As stated below (in comments) the name is MercurialEclipse. The name HgEclipse was a fork that Intland did and was later "merged" back again with MercurialEclipse, which moved around a bit ...
error: cannot dynamic_cast ‘b’ (of type ‘class Base*’) to type ‘c...
...{
T _val;
public:
Derived() {}
Derived(T val): _val(val) {}
T raw() {return _val;}
};
int main()
{
Base * b = new Derived<int>(1);
Derived<int> * d = dynamic_cast<Derived<int>* >(b);
cout << d->raw() << endl;
return 0;
}
dynamic_cast