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What are the best practices for SQLite on Android?
...cking (Updated link 6/18/2012)
Android-Database-Locking-Collisions-Example by touchlab on GitHub
Gray and I are actually wrapping up an ORM tool, based off of his Ormlite, that works natively with Android database implementations, and follows the safe creation/calling structure I describe in the b...
How do I put two increment statements in a C++ 'for' loop?
...s parsed (x=i++),a++ and not x=(i++, a++). That characteristic is misused by some libraries so that v = 1,2,3; does the intuitive things, but only because v = 1 returns a proxy object for which the overloaded comma operator does an append.
– AProgrammer
Aug 5 ...
Django: Get an object form the DB, or 'None' if nothing matches
...u can use the first() Queryset method. It returns the first object matched by the queryset, or None if there is no matching object.
Usage:
p = Article.objects.order_by('title', 'pub_date').first()
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Column order manipulation using col-lg-push and col-lg-pull in Twitter Bootstrap 3
...is blog post on the subject
col-vp-push-x = push the column to the right by x number of columns, starting from where the column would normally render -> position: relative, on a vp or larger view-port.
col-vp-pull-x = pull the column to the left by x number of columns, starting from where the c...
Order of serialized fields using JSON.NET
...will only work if you set an order greater than 1 on all other properties. By default any property without an Order setting will be given an order of -1. So you must either give all serialized properties and order, or set your first item to -2
...
What exactly is Apache Camel?
...s, I generally recommend people to read this Integration with Apache Camel by Jonathan Anstey. It's a well written piece which gives a brief introduction to and overview of some of Camel's concepts, and it implements a use case with code samples. In it, Jonathan writes:
Apache Camel is an open s...
What's the difference between an inverted index and a plain old index?
...
The index in the back of a book is actually an inverted index, as defined by the examples above - a list of words, and where to find them in the book. In a book, the table of contents is like a forward index: it's a list of documents (chapters) which the book contains, except instead of listing the...
Compiler Ambiguous invocation error - anonymous method and method group with Func or Action
...atic void Main()
{
Y(X);
}
}
So let's go through it line by line.
An implicit conversion exists from a method group to a compatible delegate type.
I've already discussed how the word "compatible" is unfortunate here. Moving on. We are wondering when doing overload resolution...
Type erasure techniques
...and will use the type of the actual object passed for creating the deleter by default:
{
const shared_ptr<void> sp( new A );
} // calls A::~A() here
Of course, this is just the usual void*/function-pointer type erasure, but very conveniently packaged.
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List tables in a PostgreSQL schema
...dt in psql I only get a listing of tables in the current schema ( public by default).
4 Answers
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