Specialize in one thing, but stay diverse enough to be broad minded and nimble enough to switch. I was hired as a PHP developer in my current role 3 months ago

Specialize in one thing, but stay diverse enough to be broad minded and nimble enough to switch. I was hired as a PHP developer in my current role 3 months ago. I have spent the last 7 years specializing in PHP, but also learning Java, C++, C#, Pyton and Javascript. A month later our iOS developer left in a hurry. I was able to pick up the language and be commercially productive in 2 weeks. I was a hero. A month later Google approached us wanting a project in Python. All of our PHP devs shrugged. I completed the project in Django (Python), we kept Google as a happy client. I was a hero. You WONT have time to learn everything before you'll need it. One day you'll be tested with very short notice, and those generalists who were nimble enough to change diet quickly, will get the $