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How to implement has_many :through relationships with Mongoid and mongodb?
...a related collection via another it would still require multiple queries.
https://github.com/mongoid/mongoid/issues/544
Normally if you have a many-many relationship in a RDBMS you would model that differently in MongoDB using a field containing an array of 'foreign' keys on either side. For examp...
Memory management in Qt?
...martpointer. The following article describes various smart pointers in Qt.
https://www.qt.io/blog/2009/08/25/count-with-me-how-many-smart-pointer-classes-does-qt-have
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How to get controls in WPF to fill available space?
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How to shrink/purge ibdata1 file in MySQL
... db-engine and is dropped and regenerated upon stop/restart of mysqld. See https://dev.mysql.com/doc/refman/5.7/en/information-schema.html.
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Check if a table exists in Rails
...e available in Rails 5:
drop_table :kittens, if_exists: true
Reference: https://github.com/rails/rails/pull/16366
And here's the Rails 5 ActiveRecord's CHANGELOG:
Introduce the :if_exists option for drop_table.
Example:
drop_table(:posts, if_exists: true)
That would execute:
DRO...
@Media min-width & max-width
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.NET HttpClient. How to POST string value?
...tp.StringContent(json, Encoding.UTF8, "application/json");
var url = "https://httpbin.org/post";
using var client = new HttpClient();
var response = await client.PostAsync(url, data);
string result = response.Content.ReadAsStringAsync().Result;
Console.WriteLine(result);
}
...
EC2 instance types's exact network performance?
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What are the differences between double-dot “..” and triple-dot “…” in Git commit ranges?
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Difference between CouchDB and Couchbase
...of CouchIO/Couch One prior to the merger. Citing a fun, historical source: https://youtube.com/watch?v=aZ_JOnU8tkI
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