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Which access modifiers are implied when not specified?
...or people playing with a starter kit. Some of them ship with tslint and it can get very confusing. When you see this message default access modifier on member/method not allowed Check tslint.json to allow default or implied access modifier.
– visheshd
Mar 15 '...
What is the Oracle equivalent of SQL Server's IsNull() function?
In SQL Server we can type IsNull() to determine if a field is null. Is there an equivalent function in PL/SQL?
4 Answers...
How do you get the width and height of a multi-dimensional array?
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.Rank for the number of dimensions. In the case this is 2, .GetLength(0) for the number of rows, .GetLength(1) for the number of columns.
– Colonel Panic
Nov 27 '12 at 11:53
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jquery-ui sortable | How to get it work on iPad/touchdevices?
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This works on Android tablet too. Specifically tested on a Samsung Galaxy tab 10.1 on Android 3.1.
– absynce
Jan 10 '12 at 20:50
3
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GROUP_CONCAT ORDER BY
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You can use ORDER BY inside the GROUP_CONCAT function in this way:
SELECT li.client_id, group_concat(li.percentage ORDER BY li.views ASC) AS views,
group_concat(li.percentage ORDER BY li.percentage ASC)
FROM li GROUP BY clien...
How to write multiple line property value using PropertiesConfiguration?
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Check the User Guide for Properties files:
Special Characters and Escaping:
If you need a special character in a property like a line feed, a
tabulation or an unicode character, you can specify it with the same
escaped notation used for Java Strings. The list separator ("," by
defau...
Regex how to match an optional character
...\s+([A-Z])\d{3}(\d{4})(\d{2})(\d{2})
But: do you really need 11 separate capturing groups? And if so, why don't you capture the fourth-to-last group of digits?
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Find the extension of a filename in Ruby
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You would want to do File.extname("example.png").downcase to ensure that the extension is not in all caps
– Sam Eaton
Oct 30 '15 at 16:08
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How to sort the result from string_agg()
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With postgres 9.0+ you can write:
select string_agg(product,' | ' order by product) from "tblproducts"
Details here.
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What is the difference between t.belongs_to and t.references in rails?
...term. They renamed before_filter to before_action, which was a good move because it reduced ambiguity. One advantage of references is that it's simply different from what you use in the model, so you get less confused if you're in the model or migration. But any term that differs would satisfy this ...