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How to generate random SHA1 hash to use as ID in node.js?
I am using this line to generate a sha1 id for node.js:
4 Answers
4
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Getting the first character of a string with $str[0]
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edited Aug 8 '17 at 4:14
Alexis Wilke
14.2k77 gold badges5151 silver badges9898 bronze badges
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How can I check which version of Angular I'm using?
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217
Edit: When this answer was written, there was only AngularJS 1.x. Look in the answers below for...
How can I improve my paw detection?
...ly, you have 5 steps:
def find_paws(data, smooth_radius=5, threshold=0.0001):
data = sp.ndimage.uniform_filter(data, smooth_radius)
thresh = data > threshold
filled = sp.ndimage.morphology.binary_fill_holes(thresh)
coded_paws, num_paws = sp.ndimage.label(filled)
data_slices =...
How to get different colored lines for different plots in a single figure?
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E.g.:
import matplotlib.pyplot as plt
import numpy as np
x = np.arange(10)
plt.plot(x, x)
plt.plot(x, 2 * x)
plt.plot(x, 3 * x)
plt.plot(x, 4 * x)
plt.show()
And, as you may already know, you can easily add a legend:
import matplotlib.pyplot as plt
import numpy as np
x = np.arange(10)
pl...
After array_filter(), how can I reset the keys to go in numerical order starting at 0
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edited Jun 21 at 16:51
Salman A
220k7676 gold badges382382 silver badges479479 bronze badges
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adding noise to a signal in python
I want to add some random noise to some 100 bin signal that I am simulating in Python - to make it more realistic.
7 Answer...
Flexbox and Internet Explorer 11 (display:flex in ?)
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153
According to http://caniuse.com/#feat=flexbox:
"IE10 and IE11 default values for flex are 0 0...
What is the Ruby (spaceship) operator?
...roovy is another language that supports it. Basically instead of returning 1 (true) or 0 (false) depending on whether the arguments are equal or unequal, the spaceship operator will return 1, 0, or −1 depending on the value of the left argument relative to the right argument.
a <=> b :=
i...
Force the origin to start at 0
... scale_x_continuous, and scale_y_continuous. Try:
df <- data.frame(x = 1:5, y = 1:5)
p <- ggplot(df, aes(x, y)) + geom_point()
p <- p + expand_limits(x = 0, y = 0)
p # not what you are looking for
p + scale_x_continuous(expand = c(0, 0)) + scale_y_continuous(expand = c(0, 0))
You m...