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When to use ' (or quote) in Lisp?
...et (+ 3 2), + is then invoked on 3 and 2 yielding 5. Our original form is now (* 5 3) yielding 15.
Explain quote Already!
Alright. As seen above, all arguments to a function are evaluated, so if you would like to pass the symbol a and not its value, you don't want to evaluate it. Lisp symbols ca...
How to sort a dataFrame in python pandas by two or more columns?
...n a future version of pandas. The way to sort a dataframe by its values is now is DataFrame.sort_values
As such, the answer to your question would now be
df.sort_values(['b', 'c'], ascending=[True, False], inplace=True)
s...
Get pandas.read_csv to read empty values as empty string instead of nan
...
Documentation for read_csv now offers both na_values (list or dict indexed by columns) and keep_default_na (bool). The keep_default_na value indicates whether pandas' default NA values should be replaced or appended to. The OP's code doesn't work curre...
Autoresizing issue of UICollectionViewCell contentView's frame in Storyboard prototype cell (Xcode 6
...
Only this works now, you have to do it just for IOS 8, and I have to call it after each dequeue ! But this also is not ideal solution because multiple selection do not work as it should visually...
– Renetik
...
Is there a JavaScript function that can pad a string to get to a determined length?
...e relevant. The curse of recursion only applies when a programmer doesn't know when its appropriate.
– hypno7oad
Jul 31 '13 at 4:36
12
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Maven in Eclipse: step by step installation [closed]
...2e/releases"
or
http://download.eclipse.org/technology/m2e/milestones/1.0
Now click OK
After that installation would be started.
Way 2: Another way to install Maven plug-in for Eclipse by "Eclipse Marketplace":
Open Eclipse
Go to Help -> Eclipse Marketplace
Search by Maven
Click "Install" b...
Setting different color for each series in scatter plot on matplotlib
...
I don't know what you mean by 'manually'. You can choose a colourmap and make a colour array easily enough:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.cm as cm
x = np.arange(10)
ys = [i+x+(i*x)**2 for i in ...
Change the Right Margin of a View Programmatically?
...eft, top, right, bottom
tv.setLayoutParams(params);
I can't test it right now, so my casting may be off by a bit, but the LayoutParams are what need to be modified to change the margin.
NOTE
Don't forget that if your TextView is inside, for example, a
RelativeLayout, one should use RelativeLayout....
Covariance and contravariance real world example
...e donkey gobbling code last week and i was so glad that we have covariance now. :-)
– Eric Lippert
Apr 18 '10 at 15:26
...
PHP memory profiling
...
im trying to use qcachegrind now and don't understand what I'm looking at. I don't see memory numbers anywhere. How much memory does each variable take up? I want something that can trace the execution and show the memory at each point, and what varia...