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Uniq by object attribute in Ruby
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LaneLane
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How can I check for NaN values?
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1389
math.isnan(x)
Return True if x is a NaN (not a number), and False otherwise.
>>>...
ipython reads wrong python version
...his, but my situation isn't exactly like the OP's.
Original answer -- 9/30/13:
cat /usr/local/bin/ipython
#!/usr/bin/python
# EASY-INSTALL-ENTRY-SCRIPT: 'ipython==0.12.1','console_scripts','ipython'
__requires__ = 'ipython==0.12.1'
import sys
from pkg_resources import load_entry_point
if __nam...
How to map and remove nil values in Ruby
...t to become the norm very soon.
For example:
numbers = [1, 2, 5, 8, 10, 13]
enum.filter_map { |i| i * 2 if i.even? }
# => [4, 16, 20]
In your case, as the block evaluates to falsey, simply:
items.filter_map { |x| process_x url }
"Ruby 2.7 adds Enumerable#filter_map" is a good read on the s...
Python: Find in list
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1235
As for your first question: that code is perfectly fine and should work if item equals one of t...
PyCharm shows unresolved references error for valid code
...Dmitry Trofimov
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3
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How does the bitwise complement operator (~ tilde) work?
Why is it that ~2 is equal to -3? How does ~ operator work?
15 Answers
15
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How to do exponential and logarithmic curve fitting in Python? I found only polynomial fitting
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230
For fitting y = A + B log x, just fit y against (log x).
>>> x = numpy.array([1, 7, 2...
CSS hexadecimal RGBA?
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113
The CSS Color Module Level 4 will probably support 4 and 8-digit hexadecimal RGBA notation!
Thr...
Scheduling recurring task in Android
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answered Jan 17 '13 at 11:17
Md Maidul IslamMd Maidul Islam
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