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How to convert an array of strings to an array of floats in numpy?
... list_of_strings)) (or equivalently, use a list comprehension). (In Python 3, you'll need to call list on the map return value if you use map, since map returns an iterator now.)
However, if it's already a numpy array of strings, there's a better way. Use astype().
import numpy as np
x = np.array...
Regex how to match an optional character
...
You could improve your regex to
^([0-9]{5})+\s+([A-Z]?)\s+([A-Z])([0-9]{3})([0-9]{3})([A-Z]{3})([A-Z]{3})\s+([A-Z])[0-9]{3}([0-9]{4})([0-9]{2})([0-9]{2})
And, since in most regex dialects, \d is the same as [0-9]:
^(\d{5})+\s+([A-Z]?)\s+([A-Z])(\d{3})(\d{3})([A-Z]{3})([A-Z]{3})\s+([A-Z])\d{3}(...
Common elements in two lists
...
163
Use Collection#retainAll().
listA.retainAll(listB);
// listA now contains only the elements whi...
Validate phone number with JavaScript
...ctly. It validates that the phone number is in one of these formats:
(123) 456-7890 or 123-456-7890
26 Answers
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Iterating through a list in reverse order in java
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answered Jan 20 '10 at 15:34
John FeminellaJohn Feminella
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Regular expression for matching latitude/longitude coordinates?
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Miha_x64
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answered Aug 19 '10 at 3:38
Eric CEric C
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Remove all values within one list from another list? [duplicate]
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>>> a = range(1, 10)
>>> [x for x in a if x not in [2, 3, 7]]
[1, 4, 5, 6, 8, 9]
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linq query to return distinct field values from a list of objects
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edited Jun 3 '11 at 19:01
answered Jun 3 '11 at 18:49
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Double Iteration in List Comprehension
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answered Apr 20 '16 at 5:34
SkamSkam
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How can I “unuse” a namespace?
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answered Oct 3 '08 at 17:39
Head GeekHead Geek
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