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Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
...
You will find it by reading the couple of pages of Muthukrishnan - Data Stream Algorithms: Puzzle 1: Finding Missing Numbers. It shows exactly the generalization you are looking for. Probably this is what your interviewer read and why he posed t...
HTML5 best practices; section/header/aside/article elements
...ormation on how each of the major HTML5 tags can/should be used (I suggest reading the full source linked at the bottom):
section – Used for grouping together thematically-related content. Sounds like a div element, but it’s not. The div has no semantic meaning. Before replacing all your di...
How should one use std::optional?
I'm reading the documentation of std::experimental::optional and I have a good idea about what it does, but I don't understand when I should use it or how I should use it. The site doesn't contain any examples as of yet which leaves it harder for me to grasp the true concept of this object. When...
SOAP vs REST (differences)
I have read articles about the differences between SOAP and REST as a web service communication protocol, but I think that the biggest advantages for REST over SOAP are:
...
Turn a simple socket into an SSL socket
...;
SSL_set_fd(cSSL, newsockfd );
//Here is the SSL Accept portion. Now all reads and writes must use SSL
ssl_err = SSL_accept(cSSL);
if(ssl_err <= 0)
{
//Error occurred, log and close down ssl
ShutdownSSL();
}
You are then able read or write using:
SSL_read(cSSL, (char *)charBuffer, nB...
How the single threaded non blocking IO model works in Node.js
I'm not a Node programmer, but I'm interested in how the single threaded non blocking IO model works.
After I read the article understanding-the-node-js-event-loop , I'm really confused about it.
It gave an example for the model:
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Copying data from one SQLite database to another
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This is kind of obvious ... but if there is already a table with that name in the target-database, it is not possible. So it is not possible to add to already existing data with that solution (great otherwise)
– Martin Meeser
Jan 25...
Why does HTML5 form-validation allow emails without a dot?
...lows for all valid E-mails, including the uncommon ones.
For some easy to read explanations (Instead of reading through the standards):
http://en.wikipedia.org/wiki/Email_address#Examples
share
|
i...
How to fix 'sudo: no tty present and no askpass program specified' error?
..., I found:
sudo -S <cmd>
The -S (stdin) option causes sudo to read the password from the standard input instead of the terminal device.
Source
Above command still needs password to be entered. To remove entering password manually, in cases like jenkins, this command works:
echo <...
Which commit has this blob?
...n/sh
obj_name="$1"
shift
git log "$@" --pretty=format:'%T %h %s' \
| while read tree commit subject ; do
if git ls-tree -r $tree | grep -q "$obj_name" ; then
echo $commit "$subject"
fi
done
And an optimised version in Perl, still quite short but much faster:
#!/usr/bin/perl
use 5....