kyryloz

git filter-branch --env-filter '
OLD_EMAIL="<old email>"
CORRECT_NAME="<correct name>"
CORRECT_EMAIL="<correct email>"
if [ "$GIT_COMMITTER_EMAIL" = "$OLD_EMAIL" ]
then
    export GIT_COMMITTER_NAME="$CORRECT_NAME"
    export GIT_COMMITTER_EMAIL="$CORRECT_EMAIL"
fi
if [ "$GIT_AUTHOR_EMAIL" = "$OLD_EMAIL" ]

kyryloz

        return facebookService.validateFacebookUser(credentialsDto)
                .map(this::findOrCreateChordUser)
                .map(user -> jwtTokenService.generateToken(user))
                .map(TokenDto::new)
                .map(ResponseEntity::ok)
                .orElseThrow(() -> new AuthorizationServiceException("Can't authenticate"));

kyryloz

variantFilter { variant ->
    def names = variant.flavors*.name

    if (names.contains("devBeta") && variant.buildType.name == "release") {
        variant.ignore = true
    }
}

kyryloz

// Return the set of products that were ordered by every customer
fun Shop.getSetOfProductsOrderedByEveryCustomer(): Set<Product> {
    val allProducts = customers.flatMap { it.orders.flatMap { it.products }}.toSet()
    return customers.fold(allProducts, {
        orderedByAll, customer ->
        orderedByAll.intersect(customer.orders.flatMap { it.products }.toSet())
    })
}

kyryloz

Android:

adb logcat '*:S' ReactNative:V ReactNativeJS:V

iOS:

Debug → Open System Log... in the iOS Simulator

More:

https://facebook.github.io/react-native/docs/debugging.html

kyryloz

Official docs / getting started:

https://facebook.github.io/react-native/ - React Native
https://facebook.github.io/react/ - React.js
https://github.com/facebookincubator/create-react-app - simplest React.js entry point
https://github.com/react-community/create-react-native-app - simplest React Native entry point
https://medium.com/the-react-native-log/organizing-a-react-native-project-9514dfadaa0 - how to organize code
https://medium.com/@jonlebensold/getting-started-with-react-native-redux-2b01408c0053 - React Native + Redux

Redux:

https://www.youtube.com/watch?v=xsSnOQynTHs - intro to predictable state containers

kyryloz

nc -zv 10.1.133.41 50001

kyryloz

Wraps Android's `android.widget.NumberPicker`. 
Supported 'Nothing' selection, which appears as first item in the NumberPicker.

kyryloz

import androidx.lifecycle.LiveData
import androidx.lifecycle.MediatorLiveData
import androidx.lifecycle.Transformations

fun <T, R> LiveData<T>.map(mapFunction: (T) -> R): LiveData<R> =
    Transformations.map(this) { mapFunction(it) }

fun <T> LiveData<T>.filter(predicate: (T) -> Boolean): LiveData<T> =
    MediatorLiveData<T>().apply {
        addSource(this@filter) { if (predicate(it)) value = it }

kyryloz

/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software