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@MichaelQQ
MichaelQQ / fib-1.js
Created June 9, 2016 14:47
const fib = n => {
if (n < 2) {
return 1
}
return fib(n - 1) + fib(n - 2);
}
//or
const fib = n => n < 2 ? 1 : fib(n - 1) + fib(n - 2);
@MichaelQQ
MichaelQQ / fib-re-pic
Created June 9, 2016 15:10
fib(6)
|---fib(5)
| |---fib(4)
| | |---fib(3)
| | | |---fib(2)
| | | |---fib(1)
| | |---fib(2)
| |---fib(3)
| |---fib(2)
| |---fib(1)
@MichaelQQ
MichaelQQ / fib-y-1.js
Created June 9, 2016 16:00
const afib = f => n => {
if (n < 2) {
return 1;
}
return f(n -1) + f(n - 2);
}
//or
const afib = f => n => n < 2 ? 1 : f(n - 1) + f(n - 2);
@MichaelQQ
MichaelQQ / fib-cache.js
Last active June 9, 2016 16:39
let m = {};
const fib = n => {
if (m[n]) {
return m[n];
}
if (n < 2) {
return 1;
}
m[n] = fib(n-1) + fib(n-2);
return m[n];
@MichaelQQ
MichaelQQ / ycomb-s1.js
Last active June 9, 2016 17:32
// a function to create realFib function
const makeMemoFib = (f, m = {}) => {
const memoFib = (n) => {
if (m[n]) {
return m[n]
}
const fib = f(memoFib);
m[n] = fib(n);
return m[n];
};
@MichaelQQ
MichaelQQ / ycomb-s2.js
Created June 9, 2016 17:45
const makeMemoFib = (f, m = {}) => {
return (n) => {
if (m[n]) {
return m[n]
}
m[n] = f(makeMemoFib(f, m))(n);
return m[n];
};
};
@MichaelQQ
MichaelQQ / ycomb-s3.js
Created June 9, 2016 17:49
const makeMemoFib = (f, m = {}) => (n) => {
if (m[n]) {
return m[n]
}
m[n] = f(makeMemoFib(f, m))(n);
return m[n];
};
// simplify again
const makeMemoFib = (f, m = {}) => (n) => {
@MichaelQQ
MichaelQQ / mailchimp-tmp.html
Created February 7, 2017 04:18
<body leftmargin="0" marginwidth="0" topmargin="0" marginheight="0" offset="0">
<center>
<table border="0" cellpadding="0" cellspacing="0" height="100%" width="100%" id="backgroundTable">
<tr>
<td>姓名</td>
<td>*|NAME|*</td>
</tr>
<tr>
<td>電話</td>
<td>*|PHONE|*</td>
@MichaelQQ
MichaelQQ / chrome-console.js
Last active February 7, 2017 08:46
var car = {
wheel: 3,
speed: () => console.log('fast')
}
var car1 = Object.create(car)
var car2 = Object.create(car)
car1.speed()
car2.speed()
@MichaelQQ
MichaelQQ / obj-create&assign.js
Last active February 7, 2017 09:43
var car = {
wheel: 3,
speed: () => console.log('fast')
}
var car1 = Object.create(car)
var car2 = Object.create(car)
var car3 = Object.assign({}, car)
var car4 = Object.assign(car)