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SQL: How to get the count of each distinct value in a column?
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Reliable timer in a console application
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Why is Java's boolean primitive size not defined?
... (O'Reilly) says a boolean primitive type is 1 byte. That could be wrong, based on what the examination of the heap is showing. I wonder if most JVMs have issues with allocating less than a byte for variables.
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emacs, unsplit a particular window split
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jQuery on window resize
...un that function in both instances.
// This function positions the footer based on window size
function positionFooter(){
var $containerHeight = $(window).height();
if ($containerHeight <= 818) {
$('.footer').css({
position: 'static',
bottom: 'auto',
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Docker EXPOSE a port only to Host
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How can I validate a string to only allow alphanumeric characters in it?
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If you sanitize database names or something internal like that you will not care if it does not run in English-speaking country.
– Ognyan Dimitrov
Jul 3 '14 at 8:04
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How can I get the MAC and the IP address of a connected client in PHP?
...ethernet segment as the server.
So, if you are building some kind of LAN based system and your clients are on the same ethernet segment, then you could get the MAC address by parsing the output of arp -n (linux) or arp -a (windows).
Edit: you ask in comments how to get the output of an external ...
How do you access a website running on localhost from iPhone browser
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Iphone, like other unix, symbian and win based devices, have the need of loopback because of some applications that connects with others over TCP/IP Loopback address. Almost all devices with network has the loopback ability.
– cusspvz
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How to add multiple columns to a table in Postgres?
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