Sense of OS binded programming languages

Question

Is there really a benefit to deep dive into a OS specific language like Swift?

Is it not more relevant to get familiar with a cross-platform framework for mobile development like Xamarin or Corona?

So a single code base can be used for compiling into the device OS specific code.

Okay - for heavy visual usage or some hardware features one code base is not enought, but for most applications a cross-platform framework will work...

What do you think? Thanks in advance!

Answer 1

Committing yourself in one language and platforms makes you understand said thing more.

While working cross-platform chances are you’ll have to write the same program in different languages anyway.

Not using a platform specific language can also encouter some unexpected bugs as the code might return different values on a different OS for example (time.time in unix systems) if i recal right.

This my opinion and my viewpoint upon it.
Hope this helps.