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Does PostgreSQL support “accent insensitive” collations?
...ver, it's possible to specify an "accent insensitive" collation (for a database, table or column), which means that it's possible for a query like
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PostgreSQL - Rename database
I need to rename the database but when I do in
PGAdmin : ALTER DATABASE "databaseName" RENAME TO "databaseNameOld" it told me that it cannot.
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When to use nested classes and classes nested in modules?
... used to namespace the classes. For instance:
module ActiveRecord
class Base
end
end
differs from
module ActionMailer
class Base
end
end
Although this is not the only use of classes nested inside of modules, it is generally the most common.
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Undefined reference to `sin` [duplicate]
... external references. This library supports all of the
interfaces of the Base System, as defined in Volume 1, except for the
Math Routines.
Standard C Mathematical Library
This library supports
the Base System math routines, as defined in Volume 1. The cc option
-lm is used to se...
What is a plain English explanation of “Big O” notation?
...mparison between algorithms to a single variable. That variable is chosen based on observations or assumptions. For example, sorting algorithms are typically compared based on comparison operations (comparing two nodes to determine their relative ordering). This assumes that comparison is expensi...
Minimum and maximum value of z-index?
I have a div in my HTML page. I am showing this div based on some condition, but the div is displaying behind the HTML element where I pointed the mouse cursor.
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(this == null) in C#!
...such method, and even comparing this to null is valid. The error is in the base init line: it is the attempt to pass instance-bounded delegate as a parameter to the base ctor. This is the bug (a hole in sematic checks) in the compiler: it should NOT be possible. You are not allowed to write : base(C...
When to use a key/value store such as Redis instead/along side of a SQL database?
...od for frequently updated real-time data, such as session store, state database, statistics, caching and its advanced data structures offers versatility to many other scenarios.
Redis, however, isn't NoSQL replacement for classic relational databases since it doesn't support many standard features ...
MVC 3: How to render a view without its layout page when loaded via ajax?
...
couldn't you do this in a base controller, set a property in the ViewData and use that? Then the line would be Layout = ViewBag.LayoutFile.
– RPM1984
Mar 15 '11 at 22:34
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When should I use uuid.uuid1() vs. uuid.uuid4() in python?
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My team just ran into trouble using UUID1 for a database upgrade script where we generated ~120k UUIDs within a couple of minutes. The UUID collision led to violation of a primary key constraint.
We've upgraded 100s of servers but on our Amazon EC2 instances we ran into this ...