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Socket.IO - how do I get a list of connected sockets/clients?
...ion ONLY works with version prior to 1.0
UPDATED 2020 Mar 06
From 1.x and above, please refer to this link: getting how many people are in a chat room in socket.io
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How to get the absolute coordinates of a view
...left corner of a view. However, all methods I can find such as getLeft() and getRight() don't work as they all seem to be relative to the parent of the view, thus giving me 0 . What is the proper way to do this?
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Center image horizontally within a div
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I don't think this is a good idea, and also I believe there's some caveats like margin: auto is dependent on the containing element having a designated width value.
– Jared Farrish
Jun 12 '12 at 0:50
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How do I retrieve an HTML element's actual width and height?
... the browser's display (viewport). To do so, I need to calculate the width and height of the <div> element.
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Jenkins Git Plugin: How to build specific tag?
... git plugin to just build that tag. This has been taking 3 hours of my day and I have conceded defeat to the masters at stack overflow.
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PDO closing connection
...ber of other reasons. When connecting or running a query, catch any error, and if it is "MySQL has gone away", attempt to connect again or run the query a second time.
– Frank Forte
Dec 14 '17 at 20:50
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How to get the value from the GET parameters?
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JavaScript itself has nothing built in for handling query string parameters.
Code running in a (modern) browser you can use the URL object (which is part of the APIs provided by browsers to JS):
var url_string = "http://www.example.com/t.html?a=1&b=3&c=m...
iOS app icon with transparent background showing black background on device
I have added an icon to my app. It has rounded edges and no background. The problem is that when I run an app on my device (iPhone 5) the icon has a black background behind the edges as if it wasn't transparent. Any solutions?
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How to make Twitter bootstrap modal full screen
... / padding issues, try right+clicking (or cmd+clicking on mac) the element and select "inspect element" on Chrome or "inspect element with firebug" on Firefox. Try selecting different HTML elements in the "elements" panel and editing the CSS on the right in real-time until you get the padding / spa...
Is it possible only to declare a variable without assigning any value in Python?
...es. If you init something to None, make sure that's what you really want, and assign something more meaningful if you can.
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