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How to list the tables in a SQLite database file that was opened with ATTACH?
...ION ALL
SELECT name FROM sqlite_temp_master
WHERE type IN ('table','view')
ORDER BY 1
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Rails: around_* callbacks
...u yield to it, then continue execution. That's why it's called around
The order goes like this: before, around, after.
So, a typical around_save would look like this:
def around_save
#do something...
yield #saves
#do something else...
end
...
Express.js req.body undefined
...s before app.configure(). In my case this was in the form of app.get/post etc, and a require() including them.
– bendman
Feb 24 '13 at 21:18
1
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Postgresql aggregate array
... do something like this:
SELECT p.p_name,
STRING_AGG(Grade.Mark, ',' ORDER BY Grade.Mark) As marks
FROM Student
LEFT JOIN Grade ON Grade.Student_id = Student.Id
GROUP BY Student.Name;
EDIT
I am not sure. But maybe something like this then:
SELECT p.p_name,
array_to_string(ARRAY_AGG...
make iframe height dynamic based on content inside- JQUERY/Javascript
...
In order for this to work for me I had to change "window.parent" to just "parent".
– prograhammer
Aug 20 '14 at 18:29
...
How to get enum value by string or int
...h necessary defensive coding to check for type safety and invalid parsing, etc.
/// <summary>
/// Extension method to return an enum value of type T for the given string.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="value">&l...
Is there a way to include commas in CSV columns without breaking the formatting?
...e field in quotes, e.g.
field1_value,field2_value,"field 3,value",field4, etc...
See wikipedia.
Updated:
To encode a quote, use ", one double quote symbol in a field will be encoded as "", and the whole field will become """". So if you see the following in e.g. Excel:
------------------------...
Difference between Java Enumeration and Iterator
...that the 'old' collection implementations in java.util (HashSet, ArrayList etc.) exhibit this behaviour. However, the newer 'concurrent' collections will never throw a ConcurrentModificationException, they will traverse the collection as of the time of creation of the iterator. Other implementations...
how to remove untracked files in Git?
... check and read all the comments below this answer and the --help section, etc., so to know all details to fine-tune your commands and surely get the expected result.
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How to get JS variable to retain value after page refresh? [duplicate]
...abstracts the ability to save any data type (like object literals, arrays, etc.).
References:
Browser Storage - https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/Storage
localStorage - https://developer.mozilla.org/en-US/docs/DOM/Storage#localStorage
JSON - https://developer.mozilla.or...