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Determine project root from a running node.js application
...uire.main === module
Because module provides a filename property (normally equivalent to __filename), the entry point of the current application can be obtained by checking require.main.filename.
So if you want the base directory for your app, you can do:
var path = require('path');
var appD...
Export query result to .csv file in SQL Server 2008
...utput mode, it doesn't affect the results if you already ran the query. In order for this to be reflected, you have to re-run the query. When you run it in "Results to File" mode, it should prompt you for where you would like to save the results.
– qJake
Jul 17...
How to run code when a class is subclassed? [duplicate]
...- Watcher subclasses type, not object. 2 - SuperClass has no superclass at all, not object. I'm just so used to writing down object as a superclass for every class I defined that I somehow missed it that this code was using something else. Although there doesn't seem to be any harm in making SuperCl...
List goals/targets in GNU make that contain variables in their definition
...utput from make -pn (i.e. make --print-data-base --dry-run)? It prints out all the variables, rules, implicit rules and which commands will be run in laborious detail.
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How to do paging in AngularJS?
...xpression that could be validly used in an ng-repeat, including filtering, ordering etc.
Works across controllers - the pagination-controls directive does not need to know anything about the context in which the paginate directive is called.
Demo : http://plnkr.co/edit/Wtkv71LIqUR4OhzhgpqL?p=previe...
glVertexAttribPointer clarification
...an attribute is enabled, you need to define the data it's going to use. In order to do so you need to bind your VBO - glBindBuffer(GL_ARRAY_BUFFER, myBuffer);.
And now we can define the attribute - glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 0, 0);. In order of parameter: 0 is the attribute you'...
Data Modeling with Kafka? Topics and Partitions
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@RavindranathAkila Kafka is designed to have of the order of few thousands of partitions roughly less than 10,000. And the main bottleneck is zookeeper. A better way to design such a system is to have fewer partitions and use keyed messages to distribute the data over a fixed ...
ActiveRecord OR query
... to use arrays as arguments, the following code works in Rails 4:
query = Order.where(uuid: uuids, id: ids)
Order.where(query.where_values.map(&:to_sql).join(" OR "))
#=> Order Load (0.7ms) SELECT "orders".* FROM "o
How to watch for array changes?
...ent
}
return n;
}
});
1 Alternatively, if you'd like to target all arrays, you could override Array.prototype.push(). Use caution, though; other code in your environment may not like or expect that kind of modification. Still, if a catch-all sounds appealing, just replace myArray with Ar...
Are foreign keys really necessary in a database design?
...s means that if you have one table containing users and another containing orders or something, then deleting a user could automatically delete all orders that point to that user.
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