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serve JSON http response

rw.Header().Set("Content-Type", "application/json")

json.NewEncoder(rw).Encode(struct{ Status int json:"status" }{ Status: http.StatusOk })

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Registers:

CPU uses registers to store data temporairly. Most AVRs have 8 bit registers. Two kinds of registers. The General Purpose Registers(GPRs) & I/O registers.

GPRs:

ARVs have 32 general purpose registers. They are R0 to R31. And located in the lowers location of memory address($0000 to $001F). They can be used by all arithmatic and logical instructions.

I/O Registers:

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#!/usr/bin/env bash

#
# This is sp, the command-line Spotify controller. It talks to a running
# instance of the Spotify Linux client over dbus, providing an interface not
# unlike mpc.
#
# Put differently, it allows you to control Spotify without leaving the comfort
# of your command line, and without a custom client or Premium subscription.
#

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Useful React Libraries and Components

Firebase

(Firebase Hooks) [https://github.com/CSFrequency/react-firebase-hooks/tree/master/auth]

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/**
 * Mimic set state function of react
 * @param prevState
 * @param property
 */
type TypedReducer<T> = (
  prevState: T,
  property: { [K in keyof T]?: T[K] }
) => T;