大约有 15,000 项符合查询结果（耗时：0.0296秒） [XML]
ValueError: numpy.dtype has the wrong size, try recompiling
...
(to expand a bit on my comment)
Numpy developers follow in general a policy of keeping a backward compatible binary interface (ABI). However, the ABI is not forward compatible.
What that means:
A package, that uses numpy in a c...
How to change value of object which is inside an array using JavaScript or jQuery?
...n that way : jquery-ui.jquery-ui.desc = ....
– qinHaiXiang
Jan 14 '11 at 10:09
2
your update won'...
From ND to 1D arrays
...the 1D elements are contiguous in memory, but would return a copy if, for example, a were made from slicing another array using a non-unit step size (e.g. a = x[::2]).
If you want a copy rather than a view, use
In [15]: c = a.flatten()
If you just want an iterator, use np.ndarray.flat:
In [20]:...
How do I check for nulls in an '==' operator overload without infinite recursion?
...
And what does foo1.Equals(foo2) means if, for example, I want foo1 == foo2 only if foo1.x == foo2.x && foo1.y == foo2.y? Isn't this answering ignoring the case where foo1 != null but foo2 == null?
– Daniel
Aug 28 '19 at 6:05
...
Is there an equivalent for the Zip function in Clojure Core or Contrib?
...c type; in particular, the number of input lists they accept needs to be fixed. (The zip, zip2, zip3, ... family can be regarded as a specialisation of the zipWith family for the common use case of tupling).
In contrast, Clojure and other Lisps have good support for variable arity functions; map is...
Logical Operators, || or OR?
...ne is ||. They have different precedence and || would work like one would expect normally.
See also: Logical operators (the following example is taken from there):
// The result of the expression (false || true) is assigned to $e
// Acts like: ($e = (false || true))
$e = false || true;
// The con...
Should I use past or present tense in git commit messages? [closed]
...it messages should be in the imperative present tense, e.g. "Add tests for x". I always find myself using the past tense, e.g. "Added tests for x" though, which feels a lot more natural to me.
...
Using R to download zipped data file, extract, and import data
...))
Use download.file() to fetch the file into the temp. file
Use unz() to extract the target file from temp. file
Remove the temp file via unlink()
which in code (thanks for basic example, but this is simpler) looks like
temp <- tempfile()
download.file("http://www.newcl.org/data/zipfiles/a1.z...
How do you convert an entire directory with ffmpeg?
...
I'm getting the error i was unexpected at this time.
– Keavon
May 17 '14 at 1:09
6
...
std::string to float or double
...ouble temp = ::atof(num.c_str());
Does it for me, it is a valid C++ syntax to convert a string to a double.
You can do it with the stringstream or boost::lexical_cast but those come with a performance penalty.
Ahaha you have a Qt project ...
QString winOpacity("0.6");
double temp = winOpacity...