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const convertToSigned = num => num << 24 >> 24

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const toBinStr = num => (num >>> 0).toString(2).padStart(32,'0').match(/.{1,8}/g).join(' ')

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function createPromiseChain(arrayForAsyncTasks) {
  let promiseChain = Promise.resolve();

  for (let i = 0; i < arrayForAsyncTasks.length; i++) {
    const dataForAsyncTask = arrayForAsyncTasks[i];
    promiseChain = promiseChain.then(() => {
      return doAsyncTask(dataForAsyncTask);
    });
  }

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2021-06-23 10:24:58,455 [   1660]  ERROR - llij.ide.plugins.PluginManager - null 
java.lang.ExceptionInInitializerError
	at com.intellij.ide.IdeEventQueue.<clinit>(IdeEventQueue.java:80)
	at com.intellij.idea.StartupUtil.replaceSystemEventQueue(StartupUtil.java:788)
	at com.intellij.idea.StartupUtil.patchSystem(StartupUtil.java:772)
	at com.intellij.idea.ApplicationLoader.executeInitAppInEdt(ApplicationLoader.kt:58)
	at com.intellij.idea.ApplicationLoader.access$executeInitAppInEdt(ApplicationLoader.kt:1)
	at com.intellij.idea.ApplicationLoader$initApplication$1$1.run(ApplicationLoader.kt:363)
	at java.desktop/java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:316)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:770)

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import * as React from "react";

import {DefaultNode} from "react-dag";
import { css, StyleAttribute } from "glamor";
import { getSettings } from "../../settings/dag-settings";
import { theme } from "../../styles";

export const endPointStyles = css({
  "&.right": {
    left: "190px",

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//instead of storing the File in the store I create an URL for the file and store that in the store

onDrop = (filesAccepted) => {
    const file = filesAccepted[0];
    const url = URL.createObjectURL(file);
    this.props.fileSelected({name: file.name, url: url}); /* this dispatches an action */
};
//then when I need the actual content I simply retrieve it like this:

const blob = await fetch(file.url).then(r => r.blob());

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PSQL

Connecting:

psql -U postgres

or

psql user_name(postgres) -h 127.0.0.1 -d db_name

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    func checkErr(err error) {
        if err != nil {
            panic(err)
        }
    }

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• Go-spew implements a deep pretty printer for Go data structures - "github.com/davecgh/go-spew/spew"
• dotenv for Go - "github.com/joho/godotenv"

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true && expression always evaluates to expression, and false && expression always evaluates to false.
(Therefore, if the condition is true, the element right after && will appear in the output. If it is false, React will ignore and skip it)
JSX example:
<div>
  <h1>Hello!</h1>
  {unreadMessages.length > 0 &&
    <h2>
      You have {unreadMessages.length} unread messages.
    </h2>
  }