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Recursive Lock (Mutex) vs Non-Recursive Lock (Mutex)
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The difference between a recursive and non-recursive mutex has to do with ownership. In the case of a recursive mutex, the kernel has to keep track of the thread who actually obtained the mutex the first time around so that it can detect the difference between recursion vs. a different thre...
Does Firefox support position: relative on table elements?
...ve / position: absolute on a <th> or <td> in Firefox it doesn't seem to work.
9 Answers
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Android Studio: Add jar as library?
...ementation fileTree(dir: 'libs', include: '*.jar')) in Android Studio 3.0+
Do a clean build (you can probably do this fine in Android Studio, but to make sure I navigated in a terminal to the root folder of my app and typed gradlew clean. I'm on Mac OS X, the command might be different on your syste...
How do I use WebStorm for Chrome Extension Development?
...s. One hitch I've run in to when developing my Chrome extension is that it doesn't recognize the chrome variable:
4 Answe...
How to convert NSNumber to NSString
...e] because it works both for ints and floats.
– just.do.it
Apr 11 '15 at 17:22
@JonLOo when using this for specific nu...
Programmatically change the src of an img tag
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Give your img tag an id, then you can
document.getElementById("imageid").src="../template/save.png";
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Get a list of checked checkboxes in a div using jQuery
...ames of checkboxes that are selected in a div with certain id. How would I do that using jQuery?
8 Answers
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How to properly document S4 class slots using Roxygen2?
For documenting classes with roxygen(2), specifying a title and description/details appears to be the same as for functions, methods, data, etc. However, slots and inheritance are their own sort of animal. What is the best practice -- current or planned -- for documenting S4 classes in roxygen2?
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How to determine the longest increasing subsequence using dynamic programming?
...ce of length pos. Now iterate through every integer X of the input set and do the following:
If X > last element in S, then append X to the end of S. This essentialy means we have found a new largest LIS.
Otherwise find the smallest element in S, which is >= than X, and change it to X.
Beca...
What is tail call optimization?
...he spec that any implementation must provide this optimization (JavaScript does also, starting with ES6), so here are two examples of the factorial function in Scheme:
(define (fact x)
(if (= x 0) 1
(* x (fact (- x 1)))))
(define (fact x)
(define (fact-tail x accum)
(if (= x 0) accum...