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How can I tell if a DOM element is visible in the current viewport?
...most never precise. You can read more about its bugs.
This solution was tested on Internet Explorer 7 (and later), iOS 5 (and later) Safari, Android 2.0 (Eclair) and later, BlackBerry, Opera Mobile, and Internet Explorer Mobile 9.
function isElementInViewport (el) {
// Special bonus f...
How do I find if a string starts with another string in Ruby?
...re several methods presented here, I wanted to figure out which one was fastest. Using Ruby 1.9.3p362:
irb(main):001:0> require 'benchmark'
=> true
irb(main):002:0> Benchmark.realtime { 1.upto(10000000) { "foobar"[/\Afoo/] }}
=> 12.477248
irb(main):003:0> Benchmark.realtime { 1.upto(...
Detect viewport orientation, if orientation is Portrait display alert message advising user of instr
...("(orientation: landscape)").matches) {
// you're in LANDSCAPE mode
}
Tested on iPad 2.
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What is the difference between map and flatMap and a good use case for each?
...
Use test.md as a example:
➜ spark-1.6.1 cat test.md
This is the first line;
This is the second line;
This is the last line.
scala> val textFile = sc.textFile("test.md")
scala> textFile.map(line => line.split(" ")).c...
Can linux cat command be used for writing text to file?
... output.txt <<EOF
some text
some lines
EOF
For PHP file:
cat > test.php <<PHP
<?php
echo "Test";
echo \$var;
?>
PHP
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Generating random integer from a range
... distributed numbers regardless the quality of rand(). For a comprehensive test of the quality of this method, please read this.
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Has anyone used Coffeescript for a production application? [closed]
...including support for offline mode.
All of our coffeescript code is fully tested. The tests themselves are written in coffeescript, and use the Qunit framework (which is written in javascript). We also wrote an extension to the Qunit framework that makes the tests nicer. The Qunit extension is w...
How can I find the length of a number?
...
Also to note this is extremely slow. I did a test in node and it turns out it's more than 1200% slower than Arturs answer.
– Oliver Dixon
Mar 12 '17 at 20:18
...
Difference between document.addEventListener and window.addEventListener?
...ous about the "bubbling up to the document but not the window" thing. So I tested it here -> jsfiddle.net/k3qv9/1 Am I missing something or does the bubbling actually occur?
– banzomaikaka
Aug 20 '12 at 21:43
...
Efficient way to rotate a list in python
...pend(l.pop(0)). So if you have a deque object to start with, sure it is fastest. Otherwise, use l.append(l.pop(0)).
– Purrell
Jul 4 '17 at 10:03
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