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const calculatorReducer = guard({ add, subtract, multiply, divide }) |
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const calculatorReducer = guard({ | |
add: add | |
subtract: subtract | |
multiply: multiply | |
divide: divide | |
}) |
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const calculatorReducer = guard({ | |
add: (state, payload) => state + payload], | |
subtract: (state, payload) => state - payload], | |
multiply: (state, payload) => state * payload], | |
divide: (state, payload) => state / payload], | |
}) |
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{ | |
add: (state, payload) => state + payload], | |
subtract: (state, payload) => state - payload], | |
... | |
} |
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const typeHandlers = cond([ | |
[equals("add"), (type, state, payload) => state + payload], | |
[equals("subtract"), (type, state, payload) => state - payload], | |
[equals("multiply"), (type, state, payload) => state * payload], | |
[equals("divide"), (type, state, payload) => state / payload], | |
[T, (type, state, payload) => state] | |
]) | |
const calculatorReducer = (state, { type, payload }) => | |
typeHandlers(type, state, payload) |
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const fn = cond([ | |
[equals(0), always('water freezes at 0°C')], | |
[equals(100), always('water boils at 100°C')], | |
[T, (temp) => `nothing special happens at ${temp}°C`] | |
]) | |
fn(0) //=> 'water freezes at 0°C' | |
fn(50) //=> 'nothing special happens at 50°C' | |
fn(100) //=> 'water boils at 100°C' |
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const calculatorReducer = (state, { type, payload }) { | |
switch (type) { | |
case 'add': | |
return state + payload | |
case 'subtract': | |
return state - payload | |
case 'multiply': | |
return state * payload | |
case 'divide': | |
return state / payload |
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calculatorReducer "add" state payload = state + payload | |
calculatorReducer "subtract" state payload = state - payload | |
calculatorReducer "multiply" state payload = state * payload | |
calculatorReducer "divide" state payload = state / payload | |
calculatorReducer _ state _ = state | |
-- or | |
calculatorReducer type state payload | |
| eq "add" = state + payload |
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'use strict'; | |
var gulp = require('gulp'), | |
browserify = require('browserify'), | |
source = require('vinyl-source-stream'), | |
runSequence = require('run-sequence'), | |
react = require('gulp-react'), | |
cjsx = require('gulp-cjsx'); | |
gulp.task('app', function() { |
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Counter = React.createClass | |
getInitialState: -> | |
count: 0 | |
increment: -> | |
@setState(count: @state.count + 1) | |
render: -> | |
<div> | |
{ @state.count } |