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How do I make an HTML button not reload the page
...ult();
alert('page did not reload');
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<form id='submit-form'>
<button type='submit'>submit</button>
</form>
...
Looping a video with AVFoundation AVPlayer?
...
This was presented at WWDC 2016 in "Advances in AVFoundation Playback":
https://developer.apple.com/videos/play/wwdc2016/503/
Even using this code, I had a hiccup until I filed a bug report with Apple and got this response:
The movie file having movie duration longer than audio/video tracks ...
How to randomly select rows in SQL?
...CAST(
(BINARY_CHECKSUM
(keycol1, NEWID())) as int))
% 100) < 10
https://msdn.microsoft.com/en-us/library/cc441928.aspx
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dd: How to calculate optimal blocksize? [closed]
...ug mailing list, circa 2002, recommending a block size of 64K here: http://www.mail-archive.com/eug-lug@efn.org/msg12073.html
For determining THE optimal output block size, I've written the following script that tests writing a 128M test file with dd at a range of different block sizes, from the de...
Render HTML to an image
...mg.src = 'data:image/svg+xml,' + encodeURIComponent('<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><foreignObject width="100%" height="100%"><div xmlns="http://www.w3.org/1999/xhtml"><style>em{color:red;}</style><em>I</em> lick <span>...
What's the difference between a Future and a Promise?
...eded.
For example take a look at how promises are defined in javascript:
https://promisesaplus.com/
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
The focus is on the composability using the then method like:
asyncOp1()
.then(function(op1Result){
// d...
Is there a VB.NET equivalent of C# out parameters?
...if you use it. There are details about fixing it in vblang area of github. https://github.com/dotnet/vblang/issues/67.
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How do I measure the execution time of JavaScript code with callbacks?
...libraries:
Available in Node >= 8.5, and should be in Modern Browers
https://developer.mozilla.org/en-US/docs/Web/API/Performance
https://nodejs.org/docs/latest-v8.x/api/perf_hooks.html#
Node 8.5 ~ 9.x (Firefox, Chrome)
// const { performance } = require('perf_hooks'); // enable for nod...
What does in XML mean?
...
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" >
<head>
<title>CDATA Example</title>
</head>
<body>
<h2>Usin...
How to get a key in a JavaScript object by its value?
...
The lodash way https://lodash.com/docs#findKey
var users = {
'barney': { 'age': 36, 'active': true },
'fred': { 'age': 40, 'active': false },
'pebbles': { 'age': 1, 'active': true }
};
_.findKey(users, { 'age': 1, 'ac...