大约有 40,000 项符合查询结果(耗时:0.0496秒) [XML]
How to convert java.util.Date to java.sql.Date?
...s like "EST" or "IST".
At this point, we may be done. If your JDBC driver complies with JDBC 4.2 spec, you should be able to pass a LocalDate via setObject on a PreparedStatement to store into a SQL DATE field.
myPreparedStatement.setObject( 1 , localDate );
Likewise, use ResultSet::getObject to f...
Why is null an object and what's the difference between null and undefined?
...
|
show 16 more comments
144
...
Hashing a dictionary?
...tems and use hash():
hash(frozenset(my_dict.items()))
This is much less computationally intensive than generating the JSON string or representation of the dictionary.
UPDATE: Please see the comments below, why this approach might not produce a stable result.
...
Java ArrayList - how can I tell if two lists are equal, order not mattering?
... avoid messing the order of the lists we will use a copy
//as noted in comments by A. R. S.
one = new ArrayList<String>(one);
two = new ArrayList<String>(two);
Collections.sort(one);
Collections.sort(two);
return one.equals(two);
}
...
What does “javascript:void(0)” mean?
...etely throws a syntax error. It's invalid javascript. Douglas crockford reccomends staying away from void because of the unary operator/function/value confusion is too costly to deal with.
– Breton
Aug 18 '09 at 6:05
...
Understanding ibeacon distancing
... require that you control for other variables. Be sure you read up on the complexities and limitations before misusing this.
When we were building the Android iBeacon library, we had to come up with our own independent algorithm because the iOS CoreLocation source code is not available. We measur...
Finding local maxima/minima with Numpy in a 1D numpy array
...ave used your above solution to solve my problem posted here stackoverflow.com/questions/57403659/… but I got output [False False] What could be the problem here?
– Msquare
Aug 8 '19 at 15:10
...
“On-line” (iterator) algorithms for estimating statistical median, mode, skewness, kurtosis?
...n for the normal case (for both the sample mean is an estimator).
Further comments
All the algorithms above can be run in parallel (including many sorting and selection algorithm, e.g. QuickSort and QuickSelect), if this helps.
I have always assumed (with the exception of the section on the norma...
Why are these numbers not equal?
...ed exactly in IEEE floating point arithmetic (the standard that almost all computers use to represent decimal numbers and do math with them), you will not always get what you expected. This is especially true because some values which are simple, finite decimals (such as 0.1 and 0.05) are not repres...
Suppress warning CS1998: This async method lacks 'await'
...:
public Task<int> Fail() // note: no "async"
{
var tcs = new TaskCompletionSource<int>();
tcs.SetException(new NotImplementedException());
return tcs.Task;
}
If you have a lot of methods throwing NotImplementedException (which itself may indicate that some design-level refactor...
