AlexGeb

ffmpeg -ss 30 -i input.mp4 -an -filter:v "setpts=0.09*PTS" result.mkv

AlexGeb

import React, { Component } from "react";
import { Formik, FastField, ErrorMessage } from "formik";
import * as Yup from "yup";

const schemaForm1 = Yup.object().shape({
  email: Yup.string()
    .email("Invalid email")
    .required("Required"),
  password: Yup.string()
    .min(2, "Too Short!")

AlexGeb

from flask import Flask, Blueprint
from flask_cors import CORS
from flask_restplus import Resource, Api, fields
from flask_restplus.reqparse import Argument
from werkzeug.contrib.fixers import ProxyFix

app = Flask(__name__)
CORS(app)
app.wsgi_app = ProxyFix(app.wsgi_app)
blueprint = Blueprint('api', __name__, url_prefix='/api')

AlexGeb

function PercentageNumber(props) {
  const { value, inputRef, onChange, fieldName, ...other } = props;
  return (
    <NumberFormat
      {...other}
      value={value * 100}
      decimalScale={2}
      getInputRef={inputRef}
      onValueChange={values => {
        onChange(values.value / 100);

AlexGeb

// @flow

export const deepUndefinedSearch = (obj: any): boolean =>
  obj instanceof Object && obj.constructor === Object
    ? Object.keys(obj)
        .map(key => {
          if (obj[key] instanceof Array) {
            return (
              obj[key].map(o => deepUndefinedSearch(o)).filter(o => !o)
                .length === 0

AlexGeb

// @flow

import { compose } from 'recompose';
import { connect } from 'react-redux';

import { fetchTasks } from 'redux/entities/tasks/actions';

import { selectTasksByProjectId } from 'redux/entities/tasks/selectors';

import ProjectTasksTab from './ProjectTasksTab';

AlexGeb

// This hook has the same behavior of useState, but takes a method as second parameter 
// to be called with the state value on component unmount. 
const useStateOnUnmount = <StateType>(
  initialState: ?StateType,
  onUnmount: (?StateType) => any,
) => {
  const stateRef = useRef(initialState);
  /* eslint-disable no-unused-vars */
  const [_, setState] = useState(stateRef.current);

AlexGeb

// Number with 2 decimals maxi
const regex = /^[0-9]*(\.[0-9]{1,2})?$/
"1.12".match(regex) // true
".1".match(regex) // true
".".match(regex) // false
".123".match(regex) // false

AlexGeb

const binomialCoefficient = (n: number, k: number): number => {
  if (k < 0 || k > n) {
    return 0;
  }
  if (k === 0 || k === n) {
    return 1;
  }
  if (k === 1 || k === n - 1) {
    return n;
  }

AlexGeb

import { Context, Effect, pipe } from 'effect';
import { either } from 'fp-ts';
import { ReaderTaskEither } from 'fp-ts/ReaderTaskEither';
import { TaskEither } from 'fp-ts/TaskEither';

export const effectFromEither = either.matchW(Effect.fail, Effect.succeed);

export const effectFromTaskEither = <E, A>(
  program: TaskEither<E, A>,
): Effect.Effect<never, E, A> =>