我仍然很擅长构建React / Redux应用程序。我一直在构建应用程序并查看其他应用程序的代码以学习最佳实践。
查看某人的Reducer，许多案例陈述都是这样的：
case RECEIVE_CURRENT_TEAM:
return _.merge({}, state, {current_team: action.team})
我想知道_。在合并之前。
我在减速机中编写上述内容的方法如下：
case RECEIVE_CURRENT_TEAM:
return merge({}, state, {current_team: action.team})
我想知道如果有_的好处。因为我正在建立我的下一个应用程序的最开始。
我发现了一些信息，但是在JavaScript中使用_扩展的文档是模糊且链接的，但链接已被破坏。
http://documentcloud.github.io/underscore/#extend
感谢您的帮助！
答案 0 :(得分：7)
答案 1 :(得分：3)
其他人提到// Include the namespace required to use Unity UI
using UnityEngine.UI;
public class PlayerController : MonoBehaviour
{
// Create public variables for player speed, and for the Text UI game objects
public float speed;
public Text countText;
public Text winText;
public Text movesText;
// Create private references to the rigidbody component on the player, and the count of pick up objects picked up so far
private Rigidbody rb;
private int count;
private int moves;
private float location;
// At the start of the game..
void Start()
{
// Assign the Rigidbody component to our private rb variable
rb = GetComponent<Rigidbody>();
// Set the count to zero
count = 0;
// Set moves to zero
moves = 0;
// Run the SetCountText function to update the UI (see below)
SetCountText();
// Set the text property of our Win Text UI to an empty string, making the 'You Win' (game over message) blank
winText.text = "";
location = transform.location;
SetMovesText();
}
void LateUpdate()
{
if (location != transform.location)
{
moves = moves + 1;
location = transform.location;
SetMovesText();
}
}
// Each physics step..
void FixedUpdate()
{
// Set some local float variables equal to the value of our Horizontal and Vertical Inputs
float moveHorizontal = Input.GetAxis("Horizontal");
float moveVertical = Input.GetAxis("Vertical");
// Create a Vector3 variable, and assign X and Z to feature our horizontal and vertical float variables above
Vector3 movement = new Vector3(moveHorizontal, 0.0f, moveVertical);
// Add a physical force to our Player rigidbody using our 'movement' Vector3 above,
// multiplying it by 'speed' - our public player speed that appears in the inspector
rb.AddForce(movement * speed);
}
// When this game object intersects a collider with 'is trigger' checked,
// store a reference to that collider in a variable named 'other'..
void OnTriggerEnter(Collider other)
{
// ..and if the game object we intersect has the tag 'Pick Up' assigned to it..
if (other.gameObject.CompareTag("Pick Up"))
{
// Make the other game object (the pick up) inactive, to make it disappear
other.gameObject.SetActive(false);
// Add one to the score variable 'count'
count = count + 1;
// Run the 'SetCountText()' function (see below)
SetCountText();
}
}
// Create a standalone function that can update the 'countText' UI and check if the required amount to win has been achieved
void SetCountText()
{
// Update the text field of our 'countText' variable
countText.text = "Count: " + count.ToString();
// Check if our 'count' is equal to or exceeded 12
if (count >= 12)
{
// Set the text value of our 'winText'
winText.text = "You Win!";
}
}
void SetMovesText()
{
movesText.text = "Moves: " + moves.ToString();
}
}
通常是lodash或下划线，但你应该知道这些函数/库没有任何神秘或神奇的东西。你也可以制作一个。
_
答案 2 :(得分：2)
如果你不想要lodash / underscore（确切地说是_），你可以尝试例如ES7语法
Object.assign({}, state, {current_team: action.team})
或
{ ...state, current_team: action.team }