大约有 41,300 项符合查询结果（耗时：0.0317秒） [XML]
How do I rename the extension for a bunch of files?
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390
For an better solution (with only bash functionality, as opposed to external calls), see one o...
Using awk to print all columns from the nth to the last
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edited Apr 8 '15 at 13:01
fedorqui 'SO stop harming'
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How does virtual inheritance solve the “diamond” (multiple inheritance) ambiguity?
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edited Apr 23 '18 at 5:23
StoryTeller - Unslander Monica
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Newline in markdown table?
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364
Use <br> to force a line break within a table cell.
Markdown Extra and MultiMarkdown al...
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...
Is APC compatible with PHP 5.4 or PHP 5.5?
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163
+500
Zend OPC...
Regex how to match an optional character
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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}(...
Is it possible to use 'else' in a list comprehension? [duplicate]
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The syntax a if b else c is a ternary operator in Python that evaluates to a if the condition ...
Common elements in two lists
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163
Use Collection#retainAll().
listA.retainAll(listB);
// listA now contains only the elements whi...
What is the iPad user agent?
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Mozilla/5.0(iPad; U; CPU iPhone OS 3_2 like Mac OS X; en-us) AppleWebKit/531.21.10 (KHTML, like Gecko) Version/4.0.4 Mobile/7B314 Safari/531.21.10
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