[02:06 PM] acemarke: @Steven : a couple other thoughts on the whole NODE_ENV
thing. First, per my comments, it really is a Node concept. It's a system environment variable that Node exposes to your application, and apparently the Express web server library popularized using its value to determine whether to do optimizations or not
[02:08 PM] acemarke: Second, because of its use within the Node ecosystem, web-focused libraries also started using it to determine whether to they were being run in a "development" environment vs a "production" environment, with corresponding optimizations. For example, React uses that as the equivalent of a C #ifdef
to act as conditional checking for debug logging and perf tracking. If process.env.NODE_ENV
is set to "production"
, all those if
clauses will evaluate to false
.
Third, in conjunction with a tool like UglifyJS that does minification and removal of dead code blocks, a clause that is surrounded with if(process.env.NODE_ENV !== "development")
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class HelloController { | |
def index() { | |
render([ hello:"world!" ] as grails.converters.JSON) | |
} | |
} |
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/** | |
* @providesModule PatientList | |
*/ | |
import NavigationBar from 'react-native-navbar'; | |
import NavigationButtons from 'NavigationButtons'; | |
import React, { ListView, Navigator, StyleSheet, Text, TextInput, TouchableHighlight, View } from 'react-native'; | |
import { connect } from 'react-redux/native' | |
@connect(state => ({ | |
patients: state.patients |
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import React, { Component } from 'react'; | |
import {Field,reduxForm} from 'redux-form'; | |
import {connect} from 'react-redux'; | |
import * as actions from '../../actions'; | |
class Signin extends Component { | |
handleSignin({ email, password }){ | |
// Log values | |
console.log('Email', email); |
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package example | |
import example.Book | |
import example.Author | |
import grails.converters.JSON | |
/** | |
* Probably the cleanest way to define custom JSON marshalling in Grails. | |
* | |
* Imagine Book and Author are domain classes with some typical fields. | |
* |
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/** | |
* Module dependencies. | |
*/ | |
var express = require('express') | |
, app = module.exports = express.createServer(); | |
// Configuration | |
app.use(app.router); |
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{ | |
"name": "npm-scripts-example", | |
"version": "1.0.0", | |
"description": "npm scripts example", | |
"scripts": { | |
"prebuild": "echo I run before the build script", | |
"build": "cross-env NODE_ENV=production webpack", | |
"postbuild": "echo I run after the build script" | |
} | |
} |
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=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') |
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// See https://blog.isquaredsoftware.com/presentations/react-redux-ts-intro-2020-12/#/36 for slides | |
// My basic render function structure: | |
function RenderLogicExample({ | |
someBoolean, // 1) Destructure values from `props` object | |
someList, | |
}) { | |
// 2) Declare state values | |
const [a, setA] = useState(0); | |
const [b, setB] = useState(0); |
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So you've cloned somebody's repo from github, but now you want to fork it and contribute back. Never fear! | |
Technically, when you fork "origin" should be your fork and "upstream" should be the project you forked; however, if you're willing to break this convention then it's easy. | |
* Off the top of my head * | |
1. Fork their repo on Github | |
2. In your local, add a new remote to your fork; then fetch it, and push your changes up to it | |
git remote add my-fork git@github...my-fork.git |
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