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Map vs Object in JavaScript
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My tests in Chrome showed that maps to not use any significant amount more memory for maintaining order. I thing there was 0.1KB more for a million keys and I don't think that was for maintaining order. However, that ~0.1KB seem...
MySQL Cannot drop index needed in a foreign key constraint
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You have to drop the foreign key. Foreign keys in MySQL automatically create an index on the table (There was a SO Question on the topic).
ALTER TABLE mytable DROP FOREIGN KEY mytable_ibfk_1 ;
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How to build a jar using maven, ignoring test results? [duplicate]
Actuality when i run tests they fails but i need to run them to get some .class files which are very important for my jar.
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SQLAlchemy: how to filter date field?
...In fact, your query is right except for the typo: your filter is excluding all records: you should change the <= for >= and vice versa:
qry = DBSession.query(User).filter(
and_(User.birthday <= '1988-01-17', User.birthday >= '1985-01-17'))
# or same:
qry = DBSession.query(User)....
Mocking vs. Spying in mocking frameworks
...can create mock out of "thin air". This is what is mostly used during unit testing.
When spying, you take an existing object and "replace" only some methods. This is useful when you have a huge class and only want to mock certain methods (partial mocking). Let me quote Mockito documentation:
You ca...
Traits vs. interfaces
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Except that traits are not interfaces at all. Interfaces are specification that can be checked against. Traits cannot be checked against, hence they are implementation only. They are the exact opposite of interfaces. That line in the RFC is simply wrong...
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What's the best/easiest GUI Library for Ruby? [closed]
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Ruby Shoes (by why) is intended to be a really simple GUI framework. I don't know how fully featured it is, though.
Some good code samples can be found in the tutorials.
Also, I think shoes powers hackety hack, a compelling programming learning environment for youn...
Combining INSERT INTO and WITH/CTE
...ions go at the top.
Wrapping every insert in a CTE has the benefit of visually segregating the query logic from the column mapping.
Spot the mistake:
WITH _INSERT_ AS (
SELECT
[BatchID] = blah
,[APartyNo] = blahblah
,[SourceRowID] = blahblahblah
FROM Table1 AS t1
)
INSERT ...
Kill detached screen session [closed]
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@kapad actually quit works if you write it inline -X -S pid/sockname quit
– Eduard
Jul 4 '14 at 15:24
20
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How to get last items of a list in Python?
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a negative index will count from the end of the list, so:
num_list[-9:]
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