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Fastest way to determine if an integer's square root is an integer
...the classical way.
// The correctness is not trivial as the conversion from long to double is lossy!
final long tst = (long) Math.sqrt(x);
return tst * tst == x;
}
The first test catches most non-squares quickly. It uses a 64-item table packed in a long, so there's no array access cost ...
Git Pull While Ignoring Local Changes?
...
If after git reset your files still differ from the remote, read stackoverflow.com/questions/1257592/…
– Colonel Panic
Aug 30 '12 at 22:31
3
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ggplot with 2 y axes on each side and different scales
...e plotting package I'm using doesn't support that." So I'm switching away from ggplot today for this particular project. =(
– Ken Williams
May 31 '12 at 22:14
63
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Entity Framework .Remove() vs. .DeleteObject()
You can remove an item from a database using EF by using the following two methods.
2 Answers
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How do you automate Javascript minification for your Java web applications?
...d and most probably does not support ES6 (above comment sounds plausible). From my understanding the latest version of yui (v2.4.8 from 2013) still relies on Mozilla Rhino (github.com/yui/yuicompressor#modified-rhino-files) and supports JavaScript1.7: developer.mozilla.org/en-US/docs/Mozilla/Project...
What is the canonical way to determine commandline vs. http execution of a PHP script?
... cli-mode
} else {
// Not in cli-mode
}
Here are some relevant notes from the docs:
php_sapi_name — Returns the type of interface between web server and PHP
Although not exhaustive, the possible return values include aolserver, apache, apache2filter, apache2handler, caudium, cgi (un...
What are the differences between django-tastypie and djangorestframework? [closed]
... with something written by the same peeps as the awesome django-haystack. From what I've seen on their mailing list Daniel Lindsey et al are super-helpful, and Tastypie is stable, comprehensive and well documented
Excels in giving you a sensible set of default behaviour and making building an API w...
In Jinja2, how do you test if a variable is undefined?
Converting from Django, I'm used to doing something like this:
6 Answers
6
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How to frame two for loops in list comprehension python
... [entry for tag in tags for entry in entries if tag in entry]
>>> from itertools import chain
>>> list(chain.from_iterable(result))
[u'man', u'thats', u'right', u'awesome']
Adding this together, you could just do
>>> list(chain.from_iterable(entry for tag in tags for en...
Simplest code for array intersection in javascript
...ersection = new Set([...setA].filter(x => setB.has(x)));
return Array.from(intersection);
}
Shorter, but less readable (also without creating the additional intersection Set):
function intersect(a, b) {
var setB = new Set(b);
return [...new Set(a)].filter(x => setB.has(x));
}
Note t...