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Fastest way to determine if an integer's square root is an integer
...numbers and looking at the last 4 bits. (I found looking at the last six didn't help.) I also answer yes for 0. (In reading the code below, note that my input is int64 x.)
if( x < 0 || (x&2) || ((x & 7) == 5) || ((x & 11) == 8) )
return false;
if( x == 0 )
return true;
Ne...
Get type of all variables
...
How to get the type of variable when hidden underneath a global object:
Everything you need is in the R manual on basic types: https://cran.r-project.org/doc/manuals/R-lang.html#Basic-types
Your object() needs to be penetrated with get(...) before you can see i...
How do I properly clean up Excel interop objects?
...= excelApp.Worksheets.Open(...);
...
Marshal.ReleaseComObject(sheet);
I didn't know that internally C# created a wrapper for the Worksheets COM object which didn't get released by my code (because I wasn't aware of it) and was the cause why Excel was not unloaded.
I found the solution to my probl...
Stop form refreshing page on submit
...() will stop the submit.
Without jQuery:
var form = document.getElementById("myForm");
function handleForm(event) { event.preventDefault(); }
form.addEventListener('submit', handleForm);
share
|
...
Smooth scrolling when clicking an anchor link
...p: $($.attr(this, 'href')).offset().top
}, 500);
});
And here's the fiddle: http://jsfiddle.net/9SDLw/
If your target element does not have an ID, and you're linking to it by its name, use this:
$('a[href^="#"]').click(function () {
$('html, body').animate({
scrollTop: $('[name...
resizes wrong; appears to have unremovable `min-width: min-content`
...values is very long. I want the <select> to resize so it is never wider than its parent, even if it has to cut off its displayed text. max-width: 100% should do that.
...
Understanding the Use of ColorMatrix and ColorMatrixColorFilter to Modify a Drawable's Hue
... I need, except that whites get overlayed with the color as well. What I'm ideally looking for is something like the "Color" blending mode in Photoshop, where the graphic retains its transparency and luminosity, and only modifies the color of the image. For example:
becomes After doing som...
JavaScript blob filename without link
...
The only way I'm aware of is the trick used by FileSaver.js:
Create a hidden <a> tag.
Set its href attribute to the blob's URL.
Set its download attribute to the filename.
Click on the <a> tag.
Here is a simplified example (jsfiddle):
var saveData = (function () {
var a = doc...
How to load an ImageView by URL in Android? [closed]
...
From Android developer:
// show The Image in a ImageView
new DownloadImageTask((ImageView) findViewById(R.id.imageView1))
.execute("http://java.sogeti.nl/JavaBlog/wp-content/uploads/2009/04/android_icon_256.png");
public ...
How do I localize the jQuery UI Datepicker?
...function to set defaults for ALL datepickers.
3. In case you want to override setting(s) before setting defaults you can use this:
var options = $.extend(
{}, // empty object
$.datepicker.regional["fr"], // fr regional
{ dateFormat: "d MM, y" /*...