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Converting from longitude\latitude to Cartesian coordinates
...'re talking about a distance of a few feet and even then there is theoretically curvature of the Earth... If you require more rigidly WGS-84 compatible approach checkout the "Vincenty Formula."
I understand where starblue is coming from, but good software engineering is often about trade offs, so ...
Web-scraping JavaScript page with Python
...a web driver fast enough and easy to get the work done.
Once you have installed Phantom JS, make sure the phantomjs binary is available in the current path:
phantomjs --version
# result:
2.1.1
Example
To give an example, I created a sample page with following HTML code. (link):
<!DOCTYPE ht...
“f” after number
... I tried the above example with LLVM version 7.0.0 (clang-700.0.65) x86_64-apple-darwin15.0.0 and the .out files were identical as well.
– Nick
Aug 21 '15 at 0:00
add a co...
Convert light frequency to RGB?
...teachers may have told us (well mine did). Too bad, but in practice not usually fatal.
– Francis Davey
May 29 '10 at 22:58
1
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Why is iterating through a large Django QuerySet consuming massive amounts of memory?
...rst time you iterate over it. For example, this will print the headline of all entries in the database:
for e in Entry.objects.all():
print e.headline
So your ten million rows are retrieved, all at once, when you first enter that loop and get the iterating form of the queryset. The wait ...
pass post data with window.location.href
...n attribute of the form to the URL and the method attribute to POST, then call the submit method on the form tag.
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Reduce, fold or scan (Left/Right)?
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In general, all 6 fold functions apply a binary operator to each element of a collection. The result of each step is passed on to the next step (as input to one of the binary operator's two arguments). This way we can cumulate a result.
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Binary search (bisection) in Python
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I originally +1'ed this, but now I've come to the conclusion this isn't a good thing. If this answer is followed, it'll cause a lot of code duplication, and as we all know, it's really simple to f*ck up binary search.
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How to easily initialize a list of Tuples?
I love tuples . They allow you to quickly group relevant information together without having to write a struct or class for it. This is very useful while refactoring very localized code.
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JavaScript: How to pass object by value?
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Not really.
Depending on what you actually need, one possibility may be to set o as the prototype of a new object.
var o = {};
(function(x){
var obj = Object.create( x );
obj.foo = 'foo';
obj.bar = 'bar';
})(o);
aler...