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sql ORDER BY multiple values in specific order?
Ok I have a table with a indexed key and a non indexed field.
I need to find all records with a certain value and return the row.
I would like to know if I can order by multiple values.
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Get list from pandas DataFrame column headers
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I would have expect something like df.column_names(). Is this answer still right or is it outdated?
– alvas
Jan 13 '16 at 6:48
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Using @property versus getters and setters
...ut hiding slow methods behind a @property decorator. The user of your API expects that property access performs like variable access, and straying too far away from that expectation can make your API unpleasant to use.
– defrex
Feb 25 '14 at 17:21
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Sort a list of tuples by 2nd item (integer value) [duplicate]
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sorted([('abc', 121),('abc', 231),('abc', 148), ('abc',221)], key=lambda x: x[1])
key should be a function that identifies how to retrieve the comparable element from your data structure. In your case, it is the second element of the tuple, so we access [1].
For optimization, see jamylak's res...
Matplotlib discrete colorbar
...As an alternative you can make your own cmap from scratch, or read-out an existing one and override just some specific entries.
import numpy as np
import matplotlib as mpl
import matplotlib.pylab as plt
fig, ax = plt.subplots(1, 1, figsize=(6, 6)) # setup the plot
x = np.random.rand(20) # defin...
“Order by Col1, Col2” using entity framework
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Try OrderBy(x => x.Col1).ThenBy(x => x.Col2). It is a LINQ feature, anyway, not exclusive to EF.
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Maven Install on Mac OS X
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OS X prior to Mavericks (10.9) actually comes with Maven 3 built in.
If you're on OS X Lion, you won't have java installed by default. Just run java by itself and it'll prompt you to install it.
Assuming qualifications are ...
Proper Linq where clauses
...s to write them and each have the same results as far as I can tell. For example;
5 Answers
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How to add an integer to each element in a list?
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new_list = [x+1 for x in my_list]
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Recommended way of making React component/div draggable
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I should probably turn this into a blog post, but here's pretty solid example.
The comments should explain things pretty well, but let me know if you have questions.
And here's the fiddle to play with: http://jsfiddle.net/Af9Jt/2/
var Draggable = React.createClass({
getDefaultProps: functio...