Python 3 uses iterators for a lot of things where python 2 used lists.The docs give a detailed explanation including the change to range. The advantage is that Python 3 doesn’t need to allocate the memory if you’re using a large range iterator or mapping. For example for i in range(1000000000): print(i) requires a lot … Read more
This is a great use for a custom generator: Python 3: def char_range(c1, c2): “””Generates the characters from `c1` to `c2`, inclusive.””” for c in range(ord(c1), ord(c2)+1): yield chr(c) then: for c in char_range(‘a’, ‘z’): print(c) Python 2: def char_range(c1, c2): “””Generates the characters from `c1` to `c2`, inclusive.””” for c in xrange(ord(c1), ord(c2)+1): yield … Read more
What you need to do is: Sort items lexicographically where range key is [r_start,r_end] Iterate the sorted list and check if current item overlaps with next. If it does extend current item to be r[i].start,r[i+1].end, and goto next item. If it doesn’t overlap add current to result list and move to next item. Here is … Read more
There is possibly mistake in the syntax you are using. The ports are defined in the next line and after leaving some space. It should work and as specified in the reference. See example below: ports: – “3000” – “3000-3005” – “8000:8000” – “9090-9091:8080-8081” – “49100:22” – “127.0.0.1:8001:8001” – “127.0.0.1:5000-5010:5000-5010” – “6060:6060/udp”
Apparently the looping construct in SQLite is the WITH RECURSIVE clause. That documentation link has sample count-to-ten code, a Mandelbrot set plotter, and a Sudoku puzzle solver, all in pure SQL. Here’s an SQLite query that computes the Fibonacci sequence to give you a feel for it: sqlite> WITH RECURSIVE …> fibo (curr, next) …> … Read more
From http://www.erlang.org/doc/man/lists.html it looks like lists:seq(1, 100) does what you want. You can also do things like lists:seq(1, 100, 2) to get all of the odd numbers in that range instead.
You’re getting the muddled green because of the way you’re creating your gradient in RBG space. To get a “cleaner” gradient, you can use the HSV model as mentioned in the answer of the question you linked to. RGB gradient (top) vs HSV (bottom) By scaling the H (hue) value between 0 (red) and 120 … Read more
$(‘input[type=range]’).on(‘input’, function () { $(this).trigger(‘change’); }); This fires the change event on every input event.
As seen in the docs for pandas.Series, all that is required for your data parameter is an array-like, dict, or scalar value. Hence to create a series for a range, you can do exactly the same as you would to create a list for a range. one_to_hundred = pd.Series(range(1,101))
Try upto/downto : irb(main):003:0> sd = Date.parse(‘2010-03-01’) => #<Date: 4910513/2,0,2299161> irb(main):004:0> ed = Date.parse(‘2010-03-15’) => #<Date: 4910541/2,0,2299161> irb(main):005:0> sd.upto(ed) { |date| puts date } 2010-03-01 2010-03-02 2010-03-03 2010-03-04 2010-03-05 2010-03-06 2010-03-07 2010-03-08 2010-03-09 2010-03-10 2010-03-11 2010-03-12 2010-03-13 2010-03-14 2010-03-15 => #<Date: 4910513/2,0,2299161> irb(main):006:0> ed.downto(sd) { |date| puts date } 2010-03-15 2010-03-14 2010-03-13 2010-03-12 2010-03-11 2010-03-10 … Read more