I can learn and know one language incredibly well, excluding the html/css/js world, as those are effectively required at this point. For me, that's PHP.
However, when I need to go to work, and my boss decides "So that position we hired you for, now its going to be ruby as well, but later on ObjC and Java.", SO comes to the rescue.
The core concepts of programming languages were cemented in my years deciphering terrible notes and learning to code in college, however the little nuances of each language inherently evade me. This is where SO has shined the most. Most of the time, solutions with multiple approaches suggested show more about the language itself than the problem asked.
However, when I need to go to work, and my boss decides "So that position we hired you for, now its going to be ruby as well, but later on ObjC and Java.", SO comes to the rescue.
The core concepts of programming languages were cemented in my years deciphering terrible notes and learning to code in college, however the little nuances of each language inherently evade me. This is where SO has shined the most. Most of the time, solutions with multiple approaches suggested show more about the language itself than the problem asked.