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To ARC or not to ARC? What are the pros and cons? [closed]
...S 3.x devices. BTW, make sure to use of Xcode to do the transition (Edit > Refactor > Convert to Objective-C ARC). During the process Xcode would do a lot of validation to make sure your code would work and figure out any codes that violates those designing guidelines.
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Can someone explain the “debounce” function in Javascript
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The code in the question was altered slightly from the code in the link. In the link, there is a check for (immediate && !timeout) BEFORE creating a new timout. Having it after causes immediate mode to never fire. I have updated my answer to annot...
Solving “Who owns the Zebra” programmatically?
... python-constraint-1.2.tar.bz2 | tar xvf -
extract (Windows, with 7zip):
> 7z e python-constraint-1.2.tar.bz2
> 7z e python-constraint-1.2.tar
install:
$ cd python-constraint-1.2
$ python setup.py install
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Why does the JVM still not support tail-call optimization?
...s Test {
public static String f() {
String s = Math.random() > .5 ? f() : g();
return s;
}
public static String g() {
if (Math.random() > .9) {
StackTraceElement[] ste = new Throwable().getStackTrace();
return ste[ste.length / 2].ge...
Javascript when to use prototypes
....fn.honk = function () {
console.log("HONK!!!");
}
volvo.honk();
// => HONK!!!
saab.drive();
// => they see me rollin'
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OPTION (RECOMPILE) is Always Faster; Why?
...ariables.
When you are using table variables, there will not be any pre-built statistics for the table variable, often leading to large differences between estimated and actual rows in the query plan. Using OPTION(RECOMPILE) on queries with table variables allows generation of a query plan that has...
Image comparison - fast algorithm
...the closest match faster, like quadtrees or binary space partitioning.
Alternative solution: Histogram method
Another less robust but potentially faster solution is to build feature histograms for each image, and choose the image with the histogram closest to the input image's histogram. I impl...
Iterator invalidation rules
...t and emplace members shall not affect the validity of iterators if (N+n) <= z * B, where N is the number of elements in the container prior to the insert operation, n is the number of elements inserted, B is the container’s bucket count, and z is the container’s maximum load factor. [26.2.7/...
Large-scale design in Haskell? [closed]
...in a module, you write it all to be over a type MonadReader Connection m => ... -> m ... and then your database functions can always get their connection without functions from other modules having to be aware of its existence. You might end up with one layer carrying your database connection...
How do I decode a string with escaped unicode?
...URIComponent(JSON.parse('"http\\u00253A\\u00252F\\u00252Fexample.com"'));
> 'http://example.com'
Original answer:
unescape(JSON.parse('"http\\u00253A\\u00252F\\u00252Fexample.com"'));
> 'http://example.com'
You can offload all the work to JSON.parse
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