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Explanation of BASE terminology
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The CAP "theorem" is dissected mathematically (but very readably) and discussed in a uniquely intelligent way by Mark Burgess, whose article I'm in progress reading. (I was linked there in the first place by Wikipedia.)
– Wildcard
Mar 28 '16...
write a shell script to ssh to a remote machine and execute commands
...currently:
pssh -i -h hosts.txt -p 100 -t 0 sleep 10000
Options:
-I: Read input and sends to each ssh process.
-P: Tells pssh to display output as it arrives.
-h: Reads the host's file.
-H : [user@]host[:port] for single-host.
-i: Display standard output and standard error as each host...
Can I call a base class's virtual function if I'm overriding it?
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Interesting. After reading this answer I thought with protected inheritance the fact that Derived is derived from Base would be only visible to the class itself and not visible to the outside too.
– Darkproduct
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C++ : why bool is 8 bits long?
...ble. You cannot address a single bit, without shifting or masking the byte read from memory. I would imagine this is a very large reason.
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GetType() can lie?
...wing question asked a few days ago in SO: GetType() and polymorphism and reading Eric Lippert's answer, I started thinking if making GetType() not be virtual really ensured that an object could not lie about its Type .
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Hidden Features of Java
After reading Hidden Features of C# I wondered, What are some of the hidden features of Java?
100 Answers
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AsyncTask Android example
I was reading about AsyncTask , and I tried the simple program below. But it does not seem to work. How can I make it work?
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How can you escape the @ character in javadoc?
...**
* This is an "at" symbol: {@literal @}
*/
The javadoc for this will read:
This is an "at" symbol: @
Of course, this will work for any characters, and is the "officially supported" way of displaying any "special" characters.
It is also the most straighforward - you don't need to know the h...
What are '$$' used for in PL/pgSQL
...Insert text with single quotes in PostgreSQL
As to your second question:
Read the most excellent manual on CREATE FUNCTION to understand the last line of your example.
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How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
.../statistics";
my %stats = do {
opendir +(my $dh), $dir;
local @_ = readdir $dh;
closedir $dh;
map +($_, []), grep !/^\.\.?$/, @_;
};
if (-t STDOUT) {
while (1) {
print "\033[H\033[J", run();
my ($time, $us) = gettimeofday();
my ($sec, $min, $hour) = local...