| float map(float value, float min1, float max1, float min2, float max2) { | |
| return min2 + (value - min1) * (max2 - min2) / (max1 - min1); | |
| } |
| // A common redux pattern when dealing with async functions is to use thunk. | |
| // This usually means your action returns a new function instead of an action object, | |
| // and the thunk middleware will make it all work. Example: | |
| const asyncAction = () => dispatch => setTimeout(() => dispatch(someOtherAction()), 10000); | |
| // Now: maybe that async stuff going on is calling some API which you don't want to overload | |
| // with request, and that's what debounce is for. | |
| // This is an example of a debounced function which will only be calleable once every second. | |
| import { debounce } from 'lodash'; | |
| const debouncedFn = debounce(() => callApi(), 1000, { leading: true, trailing: false }); |
To remove a submodule you need to:
| #!/bin/bash | |
| # | |
| # Using the information available in the new iOS8 simulator for each | |
| # device/runtime (device.plist), this script creates a readable folder structure | |
| # (no UDIDs, just simple device/runtime names). Inside that structure it creates | |
| # soft links to your apps in development. | |
| # | |
| # You can run this script every time you install an app to your simulator, or | |
| # you can simply call it to access this folder making sure it will always be | |
| # updated :) |
| git ls-files -z | xargs -0n1 git blame -w | perl -n -e '/^.*\((.*?)\s*[\d]{4}/; print $1,"\n"' | sort -f | uniq -c | sort -n |
| =Navigating= | |
| visit('/projects') | |
| visit(post_comments_path(post)) | |
| =Clicking links and buttons= | |
| click_link('id-of-link') | |
| click_link('Link Text') | |
| click_button('Save') | |
| click('Link Text') # Click either a link or a button | |
| click('Button Value') |
