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How to find the size of an array in postgresql
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Adam DingleAdam Dingle
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10
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MySQL: Insert record if not exists in table
...tnames (name, address, tele)
SELECT * FROM (SELECT 'Rupert', 'Somewhere', '022') AS tmp
WHERE NOT EXISTS (
SELECT name FROM table_listnames WHERE name = 'Rupert'
) LIMIT 1;
Query OK, 1 row affected (0.00 sec)
Records: 1 Duplicates: 0 Warnings: 0
SELECT * FROM `table_listnames`;
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How does the following LINQ statement work?
...ist = new List<int>{1,2,4,5,6};
var even = list.Where(m => m%2 == 0).ToList();
list.Add(8);
foreach (var i in even)
{
Console.WriteLine(i);
}
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Limit ggplot2 axes without removing data (outside limits): zoom
...y explains this on pp. 99; 133 of his ggplot2 book (1st edition), or pp. 160 - 161 if you have the second edition.
The issue is that, as you say, limits inside the scale or setting ylim() causes data to be thrown away, as they are constraining the data. For a true zoom (keep all the data), you nee...
How to sort an array of objects by multiple fields?
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30 Answers
30
Active
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android fragment onRestoreInstanceState
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204
Fragments do not have an onRestoreInstanceState method.
You can achieve the same result in onA...
LINQ: “contains” and a Lambda query
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edited Jan 13 at 12:08
Malice
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answered Oct ...
curl -GET and -X GET
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270
By default you use curl without explicitly saying which request method to use. If you just pass ...
Uninstall old versions of Ruby gems
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answered Apr 27 '12 at 2:30
ohhoohho
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How do I search within an array of hashes by hash values in ruby?
...@fathers.select {|father| father["age"] > 35 }
# => [ { "age" => 40, "father" => "Bob" },
# { "age" => 50, "father" => "Batman" } ]
Per the documentation, it "returns an array containing all elements of [the enumerable, in this case @fathers] for which block is not false."
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