backwards-compatibility

I'm trying to understand the principles of using Material Design a bit better (I'm new to this area and have been reading documentations and tutorials, but the subject is still a bit vague to me), and I'll be glad for some help. What I've tried so far is having 2 folders (values and values-21) with a styles.xml file per each of them - values/styles.xml: <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"></style> values-v21/styles.xml: <style name="AppTheme" parent="android:Theme.Material.NoActionBar"></style> The problem begins where I try to use activities that inherit from

I ran today against a quite subtle issue I'd like to have your opinion on. Consider the following garden-variety shared-body-idiom class: struct S { S() : p_impl(new impl) {} private: struct impl; boost::shared_ptr<impl> p_impl; }; The fun appears when you try to put those into vectors in the following way: std::vector<S> v(42); Now, with MSVC 8 at least, all the elements in v share the same impl member. Actually, what causes this is the vector constructor: template <typename T, typename A = ...> class vector { vector(size_t n, const T& x = T(), const A& a = A()); ... }; Under the scenes, only

I am writing a bit of JavaScript that uses the Object.bind method. funcabc = function(x, y, z){ this.myx = x; this.playUB = function(w) { if ( this.myx === null ) { // do blah blah return; } // do other stuff }; this.play = this.playUB.bind(this); }; Since I develop in WinXP with Firefox and sometimes test in Win7 with IE 9 or 10, I did not notice or pay attention to the fact that IE8 and below do not support bind . This particular script does not use the canvas, so I'm a little hesitant to write off all IE 8 users. Is there a standard work-around? I'm getting around sort of okay in JavaScript