mdavidgreen
commented
8 years ago Don't think anyone uses double quotes in JS, single quotes?
I do. Especially now that single-tick templates are an option. Double quotes make code easier to scan. JS treats them the same as single quotes (unlike CoffeeScript)
1.6.2, 1.6.3 (original, replacement) => source => ...
Good call. Thanks!
3.1.0, 3.1.1, 3.1., 3.1.3 etc. ${greeting}, ${name}
Makes sense to me
3.1.3 // not sure what the FP teaching is here? function greet(...args) => args.filter(arg => typeof arg === 'string').join(', ') || 'Greetings';
Demonstrating how higher-order functions work
3.3.0 greetDeeplyCurried = greeting => separator => emphasis => name => ...
Definitely worth showing as an alternative
3.4.2 curryIt(func, ...args) => (...subargs) => func(...[...args, ...subargs]);
Again, worth showing as an alternative way to build it.
4.1.0, 4.2.0 etc. // constantly const const lengths
I use let to remind me that a value is the product of an operation. I can explain that, and how objects and arrays can be defined with const and still be modified. I prefer let to keep those distinctions top-of-mind.
4.2.1 const getLength = obj => obj.length;
I made the variable names more descriptive
4.3.1 etc. const numberOfLetters =
Yes, less generic variable names
4.4.1 No need for brackets
Right you are!
4.5.0 Why put them into an array to join them at the end?
It's for demonstration. I don't want to distract the students with building a more involved example.
5.1.0 What does this do?
I updated the slide and broke out the two examples showing how higher order functions behave, explaining what the code does along the way.
5.3.0 The bit in the comment :-)
Yeah...
5.4.2 const compose = (f1, f2) => (...args) => f1(...f2(...args));
For this example, I don't want to go this far. I'm recommending people not try to build and maintain this functionality themselves
craigbilner
Hi @mdavidgreen , these are my notes:
Don't think anyone uses double quotes in JS, single quotes?
1.6.2, 1.6.3
(original, replacement) => source => ...
3.1.0, 3.1.1, 3.1., 3.1.3 etc.
${greeting}, ${name}3.1.3
// not sure what the FP teaching is here? function greet(...args) => args.filter(arg => typeof arg === 'string').join(', ') || 'Greetings';
3.3.0
greetDeeplyCurried = greeting => separator => emphasis => name => ...
3.4.2
curryIt(func, ...args) => (...subargs) => func(...[...args, ...subargs]);
4.1.0, 4.2.0 etc.
// constantly const const lengths
4.2.1
const getLength = obj => obj.length;
4.3.1 etc.
const numberOfLetters =
4.4.1
No need for brackets
4.5.0
Why put them into an array to join them at the end?
5.1.0
What does this do?
5.3.0
The bit in the comment :-)
5.4.2
const compose = (f1, f2) => (...args) => f1(...f2(...args));