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What is boxing and unboxing and what are the trade offs?
...alue on the heap. Frequently that's just the machine types (ints, floats, etc), structs, and sometimes static sized arrays. .NET-land calls them value types (as opposed to reference types). Java folks call them primitive types. Haskellions just call them unboxed.
** I'm also focusing on Java, H...
Media query to detect if device is touchscreen
...ery features.
if (Modernizr.touch){
// bind to touchstart, touchmove, etc and watch `event.streamId`
} else {
// bind to normal click, mousemove, etc
}
However, using CSS, there are pseudo class like, for example in Firefox. You can use :-moz-system-metric(touch-enabled). But these feature...
(How) can I count the items in an enum?
...ainerClass *m_containers[Folders_MAX + 1];
....
m_containers[FA] = ...; // etc.
Edit: Regarding { FA, FB, FC, Folders_MAX = FC} versus {FA, FB, FC, Folders_MAX]: I prefer setting the ...MAX value to the last legal value of the enum for a few reasons:
The constant's name is technically more accur...
What is the use of static constructors?
...n particular for reading required configuration data into readonly fields, etc.
It is run automatically by the runtime the first time it is needed (the exact rules there are complicated (see "beforefieldinit"), and changed subtly between CLR2 and CLR4). Unless you abuse reflection, it is guaranteed...
How do I use sudo to redirect output to a location I don't have permission to write to?
...f annoying advertisements
echo 127.0.0.1 ad.doubleclick.net | sudo tee -a /etc/hosts
# configure eth4 to come up on boot, set IP and netmask (centos 6.4)
echo -e "ONBOOT=\"YES\"\nIPADDR=10.42.84.168\nPREFIX=24" | sudo tee -a /etc/sysconfig/network-scripts/ifcfg-eth4
In each of these examples you ...
Difference between .on('click') vs .click()
...d obviously there are other similar shortcut methods for "keyup", "focus", etc.)
The reason I'm posting an extra answer is to mention what happens if you call .click() with no parameters:
$("#whatever").click();
// is a shortcut for
$("#whatever").trigger("click");
Noting that if you use .trigge...
Checking in packages from NuGet into version control?
...wnload location changes, or for some odd reason it is no longer available, etc. Or more likely what if there is some slight change to the package that is later re-downloaded and it breaks the build? That would have been avoided if everything needed to build the project was in source control.
...
Javascript library for human-friendly relative date formatting [closed]
....
It supports timeago, formatting, parsing, querying, manipulating, i18n, etc.
Timeago (relative time) for dates in the past is done with moment().fromNow(). For example, to display January 1, 2019 in the timeago format:
let date = moment("2019-01-01", "YYYY-MM-DD");
console.log(date.fromNow...
Can the Android layout folder contain subfolders?
...
Also, the direct parent of your actual resource files (pngs, xml layouts, etc..) does still need to correspond with the specification.
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Remove Server Response Header IIS7
... IIS sends 304 Not Modified header for static files (css / less / images / etc) as this does not reach the ASP.NET pipeline, so in this situation Server: Microsoft IIS/7.5 is still rendered
– Jano
Jul 11 '14 at 1:07
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