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How can you sort an array without mutating the original array?
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edited Mar 2 '19 at 15:27
answered Feb 24 '17 at 15:52
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How do I use an INSERT statement's OUTPUT clause to get the identity value?
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answered Jun 12 '12 at 15:07
marc_smarc_s
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Multiple Type Constraints in Swift
...le places, or just to give the composed protocol a meaningful name.
Swift 5:
func someFunc(arg: SomeProtocol & SomeOtherProtocol) {
// stuff
}
This feels more natural as the protocols are next to the argument.
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What is Prefix.pch file in Xcode?
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answered May 14 '14 at 7:55
RaffAlRaffAl
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Difference between @OneToMany and @ElementCollection?
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edited Mar 7 '17 at 13:55
naXa
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answered...
postgresql return 0 if returned value is null
... AND COALESCE( price, 0 ) > ( SELECT AVG( COALESCE( price, 0 ) )* 0.50
FROM ( SELECT *, cume_dist() OVER ( ORDER BY price DESC )
FROM web_price_scan
WHERE listing_Type='A...
Linq: GroupBy, Sum and Count
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edited Apr 15 '15 at 13:21
answered May 13 '13 at 13:07
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multi-layer perceptron (MLP) architecture: criteria for choosing number of hidden layers and size of
...10 eigenvectors then we can have 10 neural nodes in input layer.If we have 5 output classes then we can have 5 nodes in output layer.But what is the criteria for choosing number of hidden layer in a MLP and how many neural nodes in 1 hidden layer?
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Adding 'serial' to existing column in Postgres
...INSERT INTO foo (a, b) SELECT i, 'foo ' || i::text FROM generate_series(1, 5) i;
INSERT INTO bar (b) SELECT 'bar ' || i::text FROM generate_series(1, 5) i;
-- blocks of commands to turn foo into bar
CREATE SEQUENCE foo_a_seq;
ALTER TABLE foo ALTER COLUMN a SET DEFAULT nextval('foo_a_seq');
ALTER TA...