The Elements of Modern Javascript Style

In the spirit of the last post, I wanted to share my newfound interest in another language that I previously hated. Ive always treated JavaScript like an unloved cousin. I hated dealing with it, and my brief encounters with it were really unenjoyable. However, I’ve had to deal with it a bit more recently, and thankfully my earlier encounters are distant memories, and the more recent experience is much better. There are two reasons for this: one is the excellent JQuery framework, and the other is the disparate collection of elegant patterns and best practises that have made JavaScript into a reasonably elegant language to work with.

The single best reference I have found so far that elucidates on all of these is the excellent “Javascript Web Applications” from O’Reilly, which expands on many facets of modern JavaScript usage. I would definitely recommend checking this book out.

The Elements of Modern C++ Style

Herb Sutter has a fantastic short article over at his site on the new C++11 standard. The new extensions to the language are way overdue. One particular example that I really liked was the application of library algorithms and lambdas to create “extensions” to the language. For instance, the example below adds a “lock” construct (similar to the one in C#):

// C#
lock( mut_x ) {
    ... use x ...
}

// C++11 without lambdas: already nice, and more flexible (e.g., can use timeouts, other options)
{
    lock_guard<mutex> hold { mut_x };
    ... use x ...
}

// C++11 with lambdas, and a helper algorithm: C# syntax in C++
// Algorithm: template<typename T, typename F> void lock( T& t, F f ) { lock_guard<t> hold(t); f(); }
lock( mut_x, [&]{
    ... use x ...
});

Of course, all of this is dependent on compiler support. A couple of nice resources on the current state of C++11 support are:

http://www.aristeia.com/C++11/C++11FeatureAvailability.htm

and

https://wiki.apache.org/stdcxx/C%2B%2B0xCompilerSupport