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What does appending “?v=1” to CSS and Javascript URLs in link and script tags do?
I have been looking at a HTML 5 boilerplate template (from http://html5boilerplate.com/ ) and noticed the use of "?v=1" in URLs when referring to CSS and Javascript files.
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What's the absurd function in Data.Void useful for?
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this is a strict-ified and simplified version of the standard pipes type from Gabriel Gonzales' Pipes library. Now, we can encode a pipe that never yields (ie, a consumer) as
type Consumer a r = Pipe a Void r
this really never yields. The implication of this is that the proper fold rule for a...
What are the relationships between Any, AnyVal, AnyRef, Object and how do they map when used in Java
...ition to objects, there are primitives. All objects in Java are descendant from java.lang.Object, but primitives are set apart and, presently*, not extensible by a programmer. Note also that primitives have "operators", not methods.
In Scala, on the other hand, everything is an object, all objects ...
How to parse a string to an int in C++?
...so, because lexical_cast is just a wrapper around stringstream, it suffers from the same problems that stringstream does: poor support for multiple number bases and poor error handling.
The best solution
Fortunately, somebody has already solved all of the above problems. The C standard library con...
Checking if an Android application is running in the background
...few variations of this solution if you'd like to check activity visibility from the service).
Example
Implement custom Application class (note the isActivityVisible() static method):
public class MyApplication extends Application {
public static boolean isActivityVisible() {
return activi...
Changing Jenkins build number
...T being done by Jenkins, so we want to be able to get the build number(ie. from a text file) and update the build number in Jenkins to match it. I have tried to set the build number:
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UIImagePickerController error: Snapshotting a view that has not been rendered results in an empty sn
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I'm trying to make this work from an UIAertControl - one option is to present the image picker for photo browser - this works fine and the other is to present for camera - this doesn't .where would i build in the delay when using a UIALertController?
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How to read a text file into a list or an array with Python
...o add that, the above problem notwistanding, this procedure collapses data from individual rows in a single mega-list, usually not what I want when processing a record-oriented data file.
– gboffi
Jan 24 '17 at 18:52
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Javascript for “Add to Home Screen” on iPhone?
...is with the builtin UI, and that Apples does not provide anyway to do this from scripts within a page. In fact, I am pretty sure there is no mechanism for doing this on the desktop version of Safari either.
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Rails Observer Alternatives for 4.0
With Observers officially removed from Rails 4.0 , I'm curious what other developers are using in their place. (Other than using the extracted gem.) While Observers were certainly abused and could easily become unwieldily at times, there were many use-cases outside of just cache-clearing where they...