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Proper way to implement IXmlSerializable?
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@James not to the best of my knowledge
– Marc Gravell♦
Jan 3 '14 at 7:49
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INNER JOIN ON vs WHERE clause
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It's easier to see this with the WHERE syntax.
As for your example, in MySQL (and in SQL generally) these two queries are synonyms.
Also note that MySQL also has a STRAIGHT_JOIN clause.
Using this clause, you can control the JOIN order: which table is scanned in the outer loop and which one is...
How to use int.TryParse with nullable int? [duplicate]
... is an integer. If the value is an integer then skip foreach loop. Here is my code.
5 Answers
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Entity Framework VS LINQ to SQL VS ADO.NET with stored procedures? [closed]
... can with and ORM.
5) Overall
Don't get caught up in the false dichotomy of choosing an ORM vs using stored procedures. You can use both in the same application, and you probably should. Big bulk operations should go in stored procedures or SQL (which can actually be called by the EF), and EF...
How do I test for an empty JavaScript object?
After an AJAX request, sometimes my application may return an empty object, like:
57 Answers
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Getting Django admin url for an object
...lvers.NoReverseMatch errors.
Turns out I had the old format admin urls in my urls.py file.
I had this in my urlpatterns:
(r'^admin/(.*)', admin.site.root),
which gets the admin screens working but is the deprecated way of doing it. I needed to change it to this:
(r'^admin/', include(admin.sit...
Increase heap size in Java
... quit.
As others have posted, use the cmd-line flags - e.g.
java -Xmx6g myprogram
You can get a full list (or a nearly full list, anyway) by typing java -X.
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Change from SQLite to PostgreSQL in a fresh Rails project
...e (The dev and production). Since I am moving to heroku, I want to convert my database to PostgreSQL.
13 Answers
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How do I vertically align something inside a span tag?
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Excelent! It works to any type of tag. In my case, worked to <img>.
– Felipe Conde
Mar 1 '13 at 13:38
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Return first N key:value pairs from dict
...an use a dictionary comprehension like this:
# Python 2
first2pairs = {k: mydict[k] for k in mydict.keys()[:2]}
# Python 3
first2pairs = {k: mydict[k] for k in list(mydict)[:2]}
Generally a comprehension like this is always faster to run than the equivalent "for x in y" loop. Also, by using .keys...