大约有 41,285 项符合查询结果（耗时：0.0592秒） [XML]
Detect if a NumPy array contains at least one non-numeric value?
...ing and will work regardless of shape.
numpy.isnan(myarray).any()
Edit: 30x faster:
import timeit
s = 'import numpy;a = numpy.arange(10000.).reshape((100,100));a[10,10]=numpy.nan'
ms = [
'numpy.isnan(a).any()',
'any(numpy.isnan(x) for x in a.flatten())']
for m in ms:
print " %.2f s"...
Bash empty array expansion with `set -u`
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answered May 1 at 22:43
dimo414dimo414
40.6k1616 gold badges121121 silver badges205205 bronze badges
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Increment a value in Postgres
...able 'totals' had 2 columns, 'name' and 'total', and Bill had a total of 203, what would be the SQL statement I'd use in order to move Bill's total to 204?
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Returning JSON from PHP to JavaScript?
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Kent FredricKent Fredric
53k1414 gold badges101101 silver badges147147 bronze badges
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Explicit specialization in non-namespace scope [duplicate]
...in this case - explicit specializations have to be at namespace scope. C++03, §14.7.3/2:
An explicit specialization shall be declared in the namespace of which the template is a member, or, for member templates, in the namespace of which the enclosing class or enclosing class template is a memb...
Best way to clear a PHP array's values
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13 Answers
13
Active
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How can I delete Docker's images?
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Sunny
19511 silver badge1313 bronze badges
answered Mar 30 '15 at 22:15
user1378912user1378912
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Multiple inheritance/prototypes in JavaScript
...s a function or a constructor.
Example
// Creating objects
var o1, o2, o3,
obj = multiInherit(o1={a:1}, o2={b:2}, o3={a:3, b:3});
// Checking property existences
'a' in obj; // true (inherited from o1)
'b' in obj; // true (inherited from o2)
'c' in obj; // false (not found)
// Setting ...
How do I automatically sort a has_many relationship in Rails?
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edited Apr 10 '09 at 23:44
answered Apr 10 '09 at 21:54
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