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What is the correct way of using C++11's range-based for?
...ents are not just simple integers,
but instances of a more complex class, with custom copy constructor, etc.
// A sample test class, with custom copy semantics.
class X
{
public:
X()
: m_data(0)
{}
X(int data)
: m_data(data)
{}
~X()
{}
X(const X&...
Dual emission of constructor symbols
Today, I discovered a rather interesting thing about either g++ or nm ...constructor definitions appear to have two entries in libraries.
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Avoiding memory leaks with Scalaz 7 zipWithIndex/group enumeratees
...ess1.chunk(4)
pipe process1.fold(0L) {
(c, vs) => c + vs.map(_._1.length.toLong).sum
}).runLast.run
This should work with any value for the n parameter (provided you're willing to wait long enough) -- I tested with 2^14 32MiB arrays (i.e., a total of half a TiB of memory allocated ...
UITableView with fixed section headers
Greets,
I'm reading that the default behaviour of UITableView is to pin section header rows to the top of the table as you scroll through the sections until the next section pushes the previos section row out of view.
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How can I efficiently select a Standard Library container in C++11?
There's a well known image (cheat sheet) called "C++ Container choice". It's a flow chart to choose the best container for the wanted usage.
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Should JAVA_HOME point to JDK or JRE?
I pointed the JAVA_HOME to C:\Program Files (x86)\Java\jre7 . It works fine. Afterwards, I unzipped ant and set up the environment variables related to Ant, I got the following error messages after typing "ant -version"
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How to change the font size on a matplotlib plot
How does one change the font size for all elements (ticks, labels, title) on a matplotlib plot?
12 Answers
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Select random row from a sqlite table
I have a sqlite table with the following schema:
7 Answers
7
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Map enum in JPA with fixed values?
...
For versions earlier than JPA 2.1, JPA provides only two ways to deal with enums, by their name or by their ordinal. And the standard JPA doesn't support custom types. So:
If you want to do custom type conversions, you'll have to use a provider extension (with Hibernate UserType, EclipseLink ...
Logging in Scala
...od way to do logging in a Scala application? Something that is consistent with the language philosophy, does not clutter the code, and is low-maintenance and unobtrusive. Here's a basic requirement list:
...