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Is there a rule-of-thumb for how to divide a dataset into training and validation sets?
...s training data, your parameter estimates have greater variance. With less testing data, your performance statistic will have greater variance. Broadly speaking you should be concerned with dividing data such that neither variance is too high, which is more to do with the absolute number of instance...
How do I check for null values in JavaScript?
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It would be very useful to know which parts of this test for which values. Sometimes you're looking for one in particular.
– inorganik
Apr 19 '13 at 19:28
2
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How do you append to a file in Python?
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with open("test.txt", "a") as myfile:
myfile.write("appended text")
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Injecting Mockito mocks into a Spring bean
...ect a Mockito mock object into a Spring (3+) bean for the purposes of unit testing with JUnit. My bean dependencies are currently injected by using the @Autowired annotation on private member fields.
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How to compare Lists in Unit Testing
How can this test fail?
7 Answers
7
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Which is the fastest algorithm to find prime numbers?
Which is the fastest algorithm to find out prime numbers using C++? I have used sieve's algorithm but I still want it to be faster!
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How to use GROUP_CONCAT in a CONCAT in MySQL
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Try:
CREATE TABLE test (
ID INTEGER,
NAME VARCHAR (50),
VALUE INTEGER
);
INSERT INTO test VALUES (1, 'A', 4);
INSERT INTO test VALUES (1, 'A', 5);
INSERT INTO test VALUES (1, 'B', 8);
INSERT INTO test VALUES (2, 'C', 9);
SELECT ID, GRO...
What is more efficient? Using pow to square or just multiply it with itself?
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I tested the performance difference between x*x*... vs pow(x,i) for small i using this code:
#include <cstdlib>
#include <cmath>
#include <boost/date_time/posix_time/posix_time.hpp>
inline boost::posix_time:...
Test if element is present using Selenium WebDriver?
Is there a way how to test if an element is present? Any findElement method would end in an exception, but that is not what I want, because it can be that an element is not present and that is okay, that is not a fail of the test, so an exception can not be the solution.
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How to mock localStorage in JavaScript unit tests?
... store = {};
});
});
If you want to mock the local storage in all your tests, declare the beforeEach() function shown above in the global scope of your tests (the usual place is a specHelper.js script).
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