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How do I install the yaml package for Python?
...c). ruamel.yaml is now the non-out-of-date package that implements the YAML1.2 specification
– Anthon
Mar 30 '16 at 19:19
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Data structure: insert, remove, contains, get random element, all at O(1)
... that, and if there are any, I can't imagine that this would be a constant time operation. I would be interested to be proven wrong on either count.
– guildner
Apr 16 '11 at 6:10
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Standard deviation of a list
...td(ddof=1) calculate the (corrected) sample sd, which equals sqrt(N/(N-1)) times the population sd, where N is the number of points. See more: en.m.wikipedia.org/wiki/…
– binaryfunt
Apr 9 '16 at 15:56
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Python: Select subset from list based on index set
...roperty_a = numpy.array([545., 656., 5.4, 33.])
property_b = numpy.array([ 1.2, 1.3, 2.3, 0.3])
good_objects = [True, False, False, True]
good_indices = [0, 3]
property_asel = property_a[good_objects]
property_bsel = property_b[good_indices]
Using a list comprehension and zip it:
property_a = [54...
textarea's rows, and cols attribute in CSS
... a padding of half an em at the top and at the bottom and a line-height of 1.2em, then the height for 4 rows would be 1 + 4 * 1.2 = 5.8em.
– nalply
Feb 18 '14 at 13:16
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What does “@private” mean in Objective-C?
...ode, you would just get a warning instead of an error.
Either way, at run time, all bets are off. These @private and @protected ivars can be accessed by an object of any class. These visibility modifiers just make it difficult to compile the source code into machine code that violates the intent ...
How to place and center text in an SVG rectangle
...he
exact semantics of this approach are
not completely defined at this time.)
http://www.w3.org/TR/SVG11/text.html#Introduction
As a primitive, text wrapping can be simulated by using the dy attribute and tspan elements, and as mentioned in the spec, some tools can automate this. For examp...
Is there a reason for C#'s reuse of the variable in a foreach?
...e the body of the loop, and therefore closures will get a fresh copy every time.
The for loop will not be changed, and the change will not be "back ported" to previous versions of C#. You should therefore continue to be careful when using this idiom.
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How do I parse XML in Python?
...ow, copied from the cElementTree website:
library time space
xml.dom.minidom (Python 2.1) 6.3 s 80000K
gnosis.objectify 2.0 s 22000k
xml.dom.minidom (Python 2.4) 1.4 s 53000k
ElementTree 1.2 1.6 s 14500k
ElementTree 1.2.4/1.3...
Rearrange columns using cut
...wer the question posed. In the spirit of stack overflow please commit the time to answer a problem before you post.
– Bill Gale
Jan 22 at 3:42
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