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Why use multiple columns as primary keys (composite primary key)
...nerated (non-intelligent) primary key, for example in this case OrderDetailId. But then you would not always see the relationship as easily. Some folks prefer one way; some prefer the other way.
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Database, Table and Column Naming Conventions? [closed]
...hink the main issue here is that the Singular table name crowd seem to consider the table as the entity, rather than the row in the table which the Plural crowd does. You have to ask your self which it is. If the table is just a container of rows, isn't it more logical to use plural naming? You woul...
Rails 3 execute custom sql query without a model
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FWIW, Using empty params is not idiomatic ruby. So do connection.execute rather than connection().execute
– radixhound
Nov 14 '13 at 3:38
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Open Facebook page from Android app?
from my Android app, I would like to open a link to a Facebook profile in the official Facebook app (if the app is installed, of course). For iPhone, there exists the fb:// URL scheme, but trying the same thing on my Android device throws an ActivityNotFoundException .
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Responding with a JSON object in Node.js (converting object/array to JSON string)
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Yes, to make it a valid response the client will understand. Add: res.writeHead(200, {'Content-Type': 'application/json'}) before
– Ali
Dec 17 '12 at 13:50
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Count immediate child div elements using jQuery
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$("#foo > div").length
Direct children of the element with the id 'foo' which are divs. Then retrieving the size of the wrapped set produced.
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Fragments within Fragments
I'm wondering if this is actually a bug in the Android API:
6 Answers
6
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How to drop rows of Pandas DataFrame whose value in a certain column is NaN
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This question is already resolved, but...
...also consider the solution suggested by Wouter in his original comment. The ability to handle missing data, including dropna(), is built into pandas explicitly. Aside from potentially improved performance over doing it manually, these...
Twitter API returns error 215, Bad Authentication Data
...library uses API version 1.
$friendsJson = $connection->get('/friends/ids.json?cursor=-1&user_id=34342323');
This will return you list of user's friends.
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How do I clone a Django model instance object and save it to the database?
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I had to set both obj.pk and obj.id to make this work in Django 1.4
– Petr Peller
Jan 10 '14 at 18:00
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