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Reading output of a command into an array in Bash
...one line per element, there are essentially 3 ways:
With Bash≥4 use mapfile—it's the most efficient:
mapfile -t my_array < <( my_command )
Otherwise, a loop reading the output (slower, but safe):
my_array=()
while IFS= read -r line; do
my_array+=( "$line" )
done < <( my_comm...
jquery selector for id starts with specific text [duplicate]
...
Use jquery starts with attribute selector
$('[id^=editDialog]')
Alternative solution - 1 (highly recommended)
A cleaner solution is to add a common class to each of the divs & use
$('.commonClass').
But you can use the first one if html markup is not in your ...
Right mime type for SVG images with fonts embedded
...elated to this answer, please post a new question instead, or better yet - file a bugreport at crbug.com with a complete testcase.
– Erik Dahlström
Oct 21 '14 at 8:19
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What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
...:
SELECT * FROM Cars;
And then for each Car:
SELECT * FROM Wheel WHERE CarId = ?
In other words, you have one select for the Cars, and then N additional selects, where N is the total number of cars.
Alternatively, one could get all wheels and perform the lookups in memory:
SELECT * FROM Wheel
Thi...
MySQL, update multiple tables with one query
... In case, we increase the number of books in a particular order with Order.ID = 1002 in Orders table then we also need to reduce that the total number of books available in our stock by the same number in Books table.
UPDATE Books, Orders
SET Orders.Quantity = Orders.Quantity + 2,
Books.InStock ...
SELECT * FROM X WHERE id IN (…) with Dapper ORM
...this directly. For example...
string sql = "SELECT * FROM SomeTable WHERE id IN @ids"
var results = conn.Query(sql, new { ids = new[] { 1, 2, 3, 4, 5 }});
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Tips for a successful AppStore submission? [closed]
...ng an app, make sure you set the version number properly in the info.plist file -- When updating an app, you must increase the version number. You can use x.x notation, or x.x.x notation. (I forgot to update it on my first app update). Not that it's hard to update and recompile, but it is one of t...
Does the join order matter in SQL?
... (commutativity and associativity) properties:
a LEFT JOIN b
ON b.ab_id = a.ab_id
LEFT JOIN c
ON c.ac_id = a.ac_id
is equivalent to:
a LEFT JOIN c
ON c.ac_id = a.ac_id
LEFT JOIN b
ON b.ab_id = a.ab_id
but:
a LEFT JOIN b
ON b.ab_id = a.ab_id
LEFT JOIN c
ON c....
How to properly create composite primary keys - MYSQL
...le_1 and table_2 both have auto-increment surrogate primary keys as the ID. info is a table that contains information about both table_1 and table_2 .
...
Merge two branch revisions using Subversion
...flicts) working copy B to branch b (svn commit)
Check the man page (help file) for svn merge semantics. It shows you that svn merge always dumps the results into a working copy.
Check out the SVNBook for all the details.
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