大约有 35,494 项符合查询结果（耗时：0.0465秒） [XML]
How to “re-run with -deprecation for details” in sbt?
... |
edited Mar 13 '19 at 10:16
Jacek Laskowski
61.1k2020 gold badges187187 silver badges343343 bronze badges
...
How to split/partition a dataset into training and test datasets for, e.g., cross validation?
...k of the indices:
import numpy
# x is your dataset
x = numpy.random.rand(100, 5)
numpy.random.shuffle(x)
training, test = x[:80,:], x[80:,:]
or
import numpy
# x is your dataset
x = numpy.random.rand(100, 5)
indices = numpy.random.permutation(x.shape[0])
training_idx, test_idx = indices[:80], ind...
String replacement in Objective-C
...
|
edited Mar 20 '09 at 22:45
answered Mar 20 '09 at 22:39
...
Encoding Javascript Object to Json string
...
Dave WardDave Ward
56k1010 gold badges114114 silver badges134134 bronze badges
...
What's with 181783497276652981 and 8682522807148012 in Random (Java 7)?
Why were 181783497276652981 and 8682522807148012 chosen in Random.java ?
3 Answers
...
New line in Sql Query
...
Pinal Dave explains this well in his blog.
http://blog.sqlauthority.com/2009/07/01/sql-server-difference-between-line-feed-n-and-carriage-return-r-t-sql-new-line-char/
DECLARE @NewLineChar AS CHAR(2) = CHAR(13) + CHAR(10)
PRINT ('SELECT FirstLine AS FL ' + @NewLineChar + 'SELECT SecondLine AS SL'...
Repeatedly run a shell command until it fails?
... |
edited Nov 8 '19 at 0:10
Gurpreet Atwal
7366 bronze badges
answered Oct 19 '12 at 4:09
...
Java `final` method: what does it promise?
...ss is a good example.
public class Counter {
private int counter = 0;
public final int count() {
return counter++;
}
public final int reset() {
return (counter = 0);
}
}
If the public final int count() method is not final, we can do something like this:
C...
Why does isNaN(“ ”) (string with spaces) equal false?
...
JavaScript interprets an empty string as a 0, which then fails the isNAN test. You can use parseInt on the string first which won't convert the empty string to 0. The result should then fail isNAN.
...
How does variable assignment work in JavaScript?
...
edited Aug 11 '18 at 14:50
Volker E.
5,1821111 gold badges4141 silver badges6262 bronze badges
answered...