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How do I unset an element in an array in javascript?
...oesn't work if the array has multiple items in a row that match 'bar'. The index of the array will shift and you will miss splicing half of the items. Instead, use a for loop that decrements the index when a match is found.
– Dave Lancea
May 6 '14 at 19:24
...
Should I always return IEnumerable instead of IList?
...t;T> has several methods that aren't present in IEnumerable<T>:
IndexOf(T item)
Insert(int index, T item)
RemoveAt(int index)
and Properties:
T this[int index] { get; set; }
If you need these methods in any way, then by all means return IList<T>.
Also, if the method that cons...
How do I use shell variables in an awk script?
...-v b="$var2" 'BEGIN {print a,b}'
Warning. As Ed Morton writes, escape sequences will be interpreted so \t becomes a real tab and not \t if that is what you search for. Can be solved by using ENVIRON[] or access it via ARGV[]
PS If you like three vertical bar as separator |||, it can't be escaped...
Doctrine and composite unique keys
... to make it more readable especially if you have several items to mention (index in the example below).
use Doctrine\ORM\Mapping as ORM;
/**
* VideoSettings
*
* @ORM\Cache(usage="NONSTRICT_READ_WRITE")
* @ORM\Entity(repositoryClass="AppBundle\Repository\VideoSettingsRepository")
* @ORM\Table(...
BigDecimal equals() versus compareTo()
...
The answer is in the JavaDoc of the equals() method:
Unlike compareTo, this method considers two BigDecimal objects equal only if they are equal in value and scale (thus 2.0 is not equal to 2.00 when compared by this method).
In other words: equals() check...
Is 1.0 a valid output from std::generate_canonical?
...(0xffffffd9u), which when rounded to 32-bit float gives 0x1p+32, which is equal to the max value of mt19937, 4294967295 (0xffffffffu) when that is also rounded to 32-bit float.
The standard could ensure correct behavior if it were to specify that when converting from the output of the URNG to the R...
Why are only final variables accessible in anonymous class?
...
stackoverflow.com/questions/7472195/…
– Ustaman Sangat
Sep 19 '11 at 14:04
11
...
What are “named tuples” in Python?
...)
pt1 = Point(1.0, 5.0)
pt2 = Point(2.5, 1.5)
from math import sqrt
# use index referencing
line_length = sqrt((pt1[0]-pt2[0])**2 + (pt1[1]-pt2[1])**2)
# use tuple unpacking
x1, y1 = pt1
Thus, you should use named tuples instead of tuples anywhere you think object notation will make your code mo...
phantomjs not waiting for “full” page load
...nt.
var page = require("webpage").create(),
url = "http://example.com/index.html";
function onPageReady() {
var htmlContent = page.evaluate(function () {
return document.documentElement.outerHTML;
});
console.log(htmlContent);
phantom.exit();
}
page.open(url, functio...
I have an error: setOnItemClickListener cannot be used with a spinner, what is wrong?
...nife:
@OnItemSelected(R.id.spinner)
public void onSpinnerItemSelected(int index){
// ...
}
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