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Possible to do a MySQL foreign key to one of two possible tables?
...les...
Joining the products to a specific type of filter is easy if you know which type you want to join to:
SELECT * FROM Products
INNER JOIN FiltersType2 USING (product_id)
If you want the filter type to be dynamic, you must write application code to construct the SQL query. SQL requires that...
Using git repository as a database backend
...o 10..100 GiBs in my case, that might be acceptable, but, yet again, we're now talking about fairly small database of 100 MiBs.
"Sparse checkout" approach: making "sparse checkout" instead of full-blown repo clone per active user doesn't help a lot. It might save ~10x of disc space usage, but at exp...
Laravel Redirect Back with() Message
...('msg')// an extra 's' on end
Should be:
Session::get('msg')
I think, now it should work, it does for me.
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When should we use Observer and Observable?
...n its state which you would want to broadcast to the rest of the program.
Now, to do this we have to call some kind of method. We don't want the Observable class to be tightly coupled with the classes that are interested in observing it. It doesn't care who it is as long as it fulfils certain crite...
Structure padding and packing
...means that it can not deal with an usual byte arrays? Struct packing as I know mostly used in transmitting(i.e networking) a data, when you need to cast a byte array to a struct, and be sure that an array fit to a struct fields. If the spark can not do that, how those working at all?!
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In what cases could `git pull` be harmful?
...it of a (fake) linear history
Not cleaning up branches is good. Each repo knows what it wants to hold. Git has no notion of master-slave relationships.
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How to sort a collection by date in MongoDB?
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Sure, I know what a callback is. I only saw the sorting requirement in the question and all the answers give callbacks. At the same time, sorting wasn't working for me, so I thought maybe you have to do additional work in the function...
Get value when selected ng-option changes
...e"
ng-options="o.id as o.name for o in options">
</select>
Now you can just watch
myObj.ngModelValue
or you can use the ng-change directive like so:
<select
ng-model="myObj.ngModelValue"
ng-options="o.id as o.name for o in options"
ng-change="myChangeCallback()"&...
Mark error in form using Bootstrap
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@JimStewart thank you! great to know. I'll update as soon as I have a chance
– jonschlinkert
Sep 2 '13 at 2:07
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How do I change the default port (9000) that Play uses when I execute the “run” command?
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I believe right now this is only for 1.x, not yet implemented in 2.0 beta
– Pere Villega
Nov 21 '11 at 8:31
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