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How to sum array of numbers in Ruby?
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Try this:
array.inject(0){|sum,x| sum + x }
See Ruby's Enumerable Documentation
(note: the 0 base case is needed so that 0 will be returned on an empty array instead of nil)
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R programming: How do I get Euler's number?
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150
The R expression
exp(1)
represents e, and
exp(2)
represents e^2.
This works because exp i...
What is the difference between “px”, “dip”, “dp” and “sp”?
...sed on the physical density of the screen. These units are relative to a 160
dpi screen, so one dp is one pixel on a 160 dpi screen. The ratio of
dp-to-pixel will change with the screen density, but not necessarily
in direct proportion. Note: The compiler accepts both "dip" and
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Plot smooth line with PyPlot
...o smooth out your data yourself:
from scipy.interpolate import spline
# 300 represents number of points to make between T.min and T.max
xnew = np.linspace(T.min(), T.max(), 300)
power_smooth = spline(T, power, xnew)
plt.plot(xnew,power_smooth)
plt.show()
spline is deprecated in scipy 0....
What does android:layout_weight mean?
...ou also have to set the height or width (depending on your orientation) to 0px.
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Flexbox not giving equal width to elements
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If you want your elements to be completely even, you can set flex-basis: 0. This will set the flex basis to 0 and then any remaining space (which will be all space since all basises are 0) will be proportionally distributed based on flex-grow.
li {
flex-grow: 1;
flex-basis: 0;
/* ......
Anonymous recursive PHP functions
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answered Mar 19 '10 at 20:03
Derek HDerek H
10.2k66 gold badges3232 silver badges3838 bronze badges
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Undoing a 'git push'
...commit:branch_name
or in your case
git push -f origin cc4b63bebb6:alpha-0.3.0
You may have receive.denyNonFastForwards set on the remote repository. If this is the case, then you will get an error which includes the phrase [remote rejected].
In this scenario, you will have to delete and recrea...
Enable remote MySQL connection: ERROR 1045 (28000): Access denied for user
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answered Oct 11 '12 at 17:02
OctavioOctavio
2,12922 gold badges99 silver badges33 bronze badges
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How do I create a random alpha-numeric string in C++?
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+100
Mehrdad Afshari's answer would do the trick, but I found it a bit too verbose for this simple task. Look-up tables can sometimes do w...