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Ruby convert Object to Hash
...> 15.95 }}
If you need a hash that's stored in the object use as_json(root: false). I think by default root will be false. For more info refer official ruby guide
http://api.rubyonrails.org/classes/ActiveModel/Serializers/JSON.html#method-i-as_json
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INSERT … ON DUPLICATE KEY (do nothing)
... uses resources for the second action.
Use INSERT IGNORE ...,
Negative : MySQL will not show any errors if something goes wrong, so you cannot handle the errors. Use it only if you don’t care about the query.
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“use database_name” command in PostgreSQL
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If I'm not mistaken, databases in MySQL are more akin to schemas in PostgreSQL -- you can switch between those, but DBs in PostgreSQL are a whole different ballgame.
– mpen
May 10 '12 at 3:40
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“Auto Layout still required after executing -layoutSubviews” with UITableViewCell subclass
.... I think the problem is the custom view that UITableViewCell uses as its root view can't use auto layout because it overrides layoutSubviews (so when you try to add constraints to the root view, it will fail)
– borrrden
Oct 18 '12 at 5:29
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Django FileField with upload_to determined at runtime
...g to set up my uploads so that if user joe uploads a file it goes to MEDIA_ROOT/joe as opposed to having everyone's files go to MEDIA_ROOT. The problem is I don't know how to define this in the model. Here is how it currently looks:
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Python - Create a list with initial capacity
... 0.0098
Conclusion. It barely matters.
Premature optimization is the root of all evil.
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MVC (Laravel) where to add logic
...ginning I was very confused by this. And, like you, I thought "well, I use MySQL and thats that.".
However, I have balanced the pros vs cons of using the Repository Pattern and now I use it. I think that now, at this very moment, I will only need to use MySQL. But, if three years from now I need to...
How to find the lowest common ancestor of two nodes in any binary tree?
...ible. For both nodes in question construct a list containing the path from root to the node by starting at the node, and front inserting the parent.
So for 8 in your example, you get (showing steps): {4}, {2, 4}, {1, 2, 4}
Do the same for your other node in question, resulting in (steps not shown...
This app won't run unless you update Google Play Services (via Bazaar)
...ther. It probably would work if I knew exactly which APKs to copy from my rooted device.
– James Wald
Dec 5 '12 at 4:28
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How to switch databases in psql?
In MySQL , I used use database_name;
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