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How to write the Fibonacci Sequence?
... two numbers of the
sequence itself, yielding the sequence
0, 1, 1, 2, 3, 5, 8, etc.
If your language supports iterators you may do something like:
def F():
a,b = 0,1
while True:
yield a
a, b = b, a + b
Display startNumber to endNumber only from Fib sequence.
Once y...
Why does Typescript use the keyword “export” to make classes and interfaces public?
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edited Aug 3 '16 at 21:35
Ondra Žižka
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How to get a specific “commit” of a gem from github?
...m 'rails', :git => 'git://github.com/rails/rails.git', :branch => '2-3-stable'
gem 'rails', :git => 'git://github.com/rails/rails.git', :tag => 'v2.3.5'
Source: How to install gems from git repositories
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How to change line width in IntelliJ (from 120 character)
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331
IntelliJ IDEA 2018
File > Settings... > Editor > Code Style > Hard wrap at
Int...
Which mime type should I use for mp3
I'm trying to decide which mime type to choose for returning mp3 data (served up by php)
5 Answers
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URL query parameters to dict python
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193
Use the urllib.parse library:
>>> from urllib import parse
>>> url = "http://...
Java switch statement: Constant expression required, but it IS constant
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13 Answers
13
Active
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How to initialize an array's length in JavaScript?
Most of the tutorials that I've read on arrays in JavaScript (including w3schools and devguru ) suggest that you can initialize an array with a certain length by passing an integer to the Array constructor using the var test = new Array(4); syntax.
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How to smooth a curve in the right way?
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y = np.sin(x) + np.random.random(100) * 0.2
yhat = savitzky_golay(y, 51, 3) # window size 51, polynomial order 3
plt.plot(x,y)
plt.plot(x,yhat, color='red')
plt.show()
UPDATE: It has come to my attention that the cookbook example I linked to has been taken down. Fortunately, the Savitzky-Gola...
numpy: most efficient frequency counts for unique values in an array
...ncount(x)
ii = np.nonzero(y)[0]
And then:
zip(ii,y[ii])
# [(1, 5), (2, 3), (5, 1), (25, 1)]
or:
np.vstack((ii,y[ii])).T
# array([[ 1, 5],
[ 2, 3],
[ 5, 1],
[25, 1]])
or however you want to combine the counts and the unique values.
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