I don't see the problem. `<span ng-show="form.length.$error.float">` makes total sense to me. You show the content of that span when form.length.$error.float is truthy. Probably when it exists.
And yes, AngularJS absolutely defines its own language. The directives create an enhanced HTML (that you can enhance even further), and it has its own expression language where you can ask the value of `form.length.$error.float` without fearing null pointers.
This is basically what Angular is about, and why it works as nicely and cleanly as it does. And it's true; learning a new framework is absolutely comparable to learning a new language. Rails is not simply standard Ruby; it defines loads of new stuff that automatically handles things for you below the surface. Spring completely changes the way you work with Java. Grails has its own DSLs for various tasks.
Every framework has a learning curve. And a framework that doesn't change how you think is as useless to learn as a language that doesn't change how you think. But if you don't like learning, you can always simply stick to what you're familiar with.
And yes, AngularJS absolutely defines its own language. The directives create an enhanced HTML (that you can enhance even further), and it has its own expression language where you can ask the value of `form.length.$error.float` without fearing null pointers.
This is basically what Angular is about, and why it works as nicely and cleanly as it does. And it's true; learning a new framework is absolutely comparable to learning a new language. Rails is not simply standard Ruby; it defines loads of new stuff that automatically handles things for you below the surface. Spring completely changes the way you work with Java. Grails has its own DSLs for various tasks.
Every framework has a learning curve. And a framework that doesn't change how you think is as useless to learn as a language that doesn't change how you think. But if you don't like learning, you can always simply stick to what you're familiar with.