Пропустить теорию и перейти прямо к задачам
Ссылка на учебник: http://learn.javascript.ru
Сразу расскажу про несколько особенностей яваскрипта, о которых может быть не написано (или мало написано) в учебниках, но которые стоит понимать:
var fs = require('fs'); | |
var path = require('path'); | |
var mongodb = require('mongodb'); | |
var BSON = mongodb.BSON; | |
var DB_HOST = 'localhost'; | |
var DB_PORT = 27017 | |
var DB_OPTION = {}; | |
var DB_NAME = 'test01'; |
/*! = $rembase: 14px | |
-------------------------------------------------------------- | |
* hmtl { font-size: 87.5%; } | |
* body { font-size: 14px; font-size: 1rem; line-height: 1; } | |
* 4px 0.28571429rem | |
* 8px 0.571428571rem | |
* 12px 0.857142857rem | |
* 13px 0.928571429rem | |
* 14px 1rem | |
* 16px 1.142857143rem |
# | |
# CORS header support | |
# | |
# One way to use this is by placing it into a file called "cors_support" | |
# under your Nginx configuration directory and placing the following | |
# statement inside your **location** block(s): | |
# | |
# include cors_support; | |
# | |
# As of Nginx 1.7.5, add_header supports an "always" parameter which |
Пропустить теорию и перейти прямо к задачам
Ссылка на учебник: http://learn.javascript.ru
Сразу расскажу про несколько особенностей яваскрипта, о которых может быть не написано (или мало написано) в учебниках, но которые стоит понимать:
$ git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
$ nano ~/.zshrc
path=('/path/to/depot_tools' $path)
// connect() is a function that injects Redux-related props into your component. | |
// You can inject data and callbacks that change that data by dispatching actions. | |
function connect(mapStateToProps, mapDispatchToProps) { | |
// It lets us inject component as the last step so people can use it as a decorator. | |
// Generally you don't need to worry about it. | |
return function (WrappedComponent) { | |
// It returns a component | |
return class extends React.Component { | |
render() { | |
return ( |
https://gist.github.com/ljharb/58faf1cfcb4e6808f74aae4ef7944cff
While attempting to explain JavaScript's reduce
method on arrays, conceptually, I came up with the following - hopefully it's helpful; happy to tweak it if anyone has suggestions.
JavaScript Arrays have lots of built in methods on their prototype. Some of them mutate - ie, they change the underlying array in-place. Luckily, most of them do not - they instead return an entirely distinct array. Since arrays are conceptually a contiguous list of items, it helps code clarity and maintainability a lot to be able to operate on them in a "functional" way. (I'll also insist on referring to an array as a "list" - although in some languages, List
is a native data type, in JS and this post, I'm referring to the concept. Everywhere I use the word "list" you can assume I'm talking about a JS Array) This means, to perform a single operation on the list as a whole ("atomically"), and to return a new list - thus making it mu
upload(files) { | |
const config = { | |
onUploadProgress: function(progressEvent) { | |
var percentCompleted = Math.round((progressEvent.loaded * 100) / progressEvent.total) | |
console.log(percentCompleted) | |
} | |
} | |
let data = new FormData() | |
data.append('file', files[0]) |
You have to do 2 things in order to allow your container to access your host's postgresql database
Obs: By "Host" here I mean "the server where docker is running on".
Find your postgresql.conf (in case you don't know where it is)
$ sudo find / -type f -name postgresql.conf