3 ms·

This isn't about learnability or time to fluency, it is about readability. The & issue i mention for example isn't about how easy it is to learn about reference

by Crinus 7y ago

This isn't about learnability or time to fluency, it is about readability. The & issue i mention for example isn't about how easy it is to learn about references, but about how readable is when, e.g, you are reading some patch in a code review and you miss someone forgetting it when returning a huge collection which can causes severe performance issues. These are mostly orthogonal issues to how easy and/or powerful a language is.

derefr 7y ago
My definition of "fluency" is that it's the point where every well-written piece of code in the language is easily readable to you. ("Fluency" of a spoken language is the point where you can speak it and parse-while-hearing it without thinking, so I think this is a sensible definition.) By this standard, most programmers never achieve 100% fluency in even their favorite programming language, unless their favorite language is one of the dead-simple ones; and there are some programming languages (esolangs, certainly) that nobody is 100% fluent in; and many (the APLs, Forths, etc.) that only a few human beings on earth are 100% fluent in. (That's not to say that there aren't many people who can read and write them—just, not fluently. If you need to look at a programming-language reference more often than you need a dictionary to parse out the meaning of a sentence in your native spoken language, you're not fluent.) A language that's less "readable", by your terming, is just one that takes longer to become fluent in. Given that the programmers working on any given project are going to be in a mixture of phases in their careers, and thus have invested different numbers of man-hours into language fluency, there's going to be a mixture of fluency levels on any project (where less-fluent readers experience the language as "less readable.") Longer time-to-fluency means that the same number of invested man-hours get you less fluency, and so on projects in languages with longer time-to-fluency, but the same distribution of programmer career-levels, you'll see lower average fluency (or a skew toward the bottom of the distribution, really) and thus more complaints of low readability. Mind you, this isn't really a fact about the language itself, but a fact about the project—if everyone on a project are 20-year veterans of the language, any language can be "readable." I would note that we can measure time-to-fluency; it's objective. We can teach people a programming language, test them along the way, and see how many man-hours of study it takes to get 100% on the tests. We can't measure a language's "readability"; it's subjective. But it likely has a heavy correlation to time-to-fluency, so time-to-fluency is the measure you should care about if you care about A-B testing programming language syntax features for their effect on "readability."

by Crinus 7y ago

derefr 7y ago

My definition of "fluency" is that it's the point where every well-written piece of code in the language is easily readable to you. ("Fluency" of a spoken language is the point where you can speak it and parse-while-hearing it without thinking, so I think this is a sensible definition.) By this standard, most programmers never achieve 100% fluency in even their favorite programming language, unless their favorite language is one of the dead-simple ones; and there are some programming languages (esolangs, certainly) that nobody is 100% fluent in; and many (the APLs, Forths, etc.) that only a few human beings on earth are 100% fluent in. (That's not to say that there aren't many people who can read and write them—just, not fluently. If you need to look at a programming-language reference more often than you need a dictionary to parse out the meaning of a sentence in your native spoken language, you're not fluent.) A language that's less "readable", by your terming, is just one that takes longer to become fluent in. Given that the programmers working on any given project are going to be in a mixture of phases in their careers, and thus have invested different numbers of man-hours into language fluency, there's going to be a mixture of fluency levels on any project (where less-fluent readers experience the language as "less readable.") Longer time-to-fluency means that the same number of invested man-hours get you less fluency, and so on projects in languages with longer time-to-fluency, but the same distribution of programmer career-levels, you'll see lower average fluency (or a skew toward the bottom of the distribution, really) and thus more complaints of low readability. Mind you, this isn't really a fact about the language itself, but a fact about the project—if everyone on a project are 20-year veterans of the language, any language can be "readable." I would note that we can measure time-to-fluency; it's objective. We can teach people a programming language, test them along the way, and see how many man-hours of study it takes to get 100% on the tests. We can't measure a language's "readability"; it's subjective. But it likely has a heavy correlation to time-to-fluency, so time-to-fluency is the measure you should care about if you care about A-B testing programming language syntax features for their effect on "readability."