参数可以是IEnumerable-如何更改代码? [英] Parameter can be IEnumerable - How to change code?

问题描述

resharper说，对于参数"gameObjects"，参数可以是IEnumerable .如何将代码更改为此，这样做有什么好处?

resharper says Parameter can be IEnumerable, for the parameter "gameObjects". How do I change the code to this, and what's the benefit of doing so?

Transform GetClosestObject (Transform[] gameObjects) {
    Transform bestTarget = null;
    float closestDistanceSqr = Mathf.Infinity;
    Vector3 currentPosition = transform.position;
    foreach(Transform potentialTarget in gameObjects) {
        Vector3 directionToTarget = potentialTarget.position - currentPosition;
        float dSqrToTarget = directionToTarget.sqrMagnitude;
        if(dSqrToTarget < closestDistanceSqr) {
            closestDistanceSqr = dSqrToTarget;
            bestTarget = potentialTarget;
        }
    }

    return bestTarget;
}   

推荐答案

Resharper告诉您可以将gameObjects参数更改为IEnumerable类型，而不是数组类型.这样可以使方法签名更加灵活，因为它允许调用者输入数组或List或其他IEnumerable实现.

Resharper is telling you that you can change the gameObjects parameter to be of type IEnumerable rather than array. This results in a more flexible method signature as it allows the caller to input an array or List or other IEnumerable implementation.

请参见 https://www.jetbrains.com/help/resharper/ParameterTypeCanBeEnumerable.Global.html

IEnumerable.要使用，请添加

IEnumerable is found under the System.Collections.Generic namespace. To use, add

using System.Collections.Generic;

在文件顶部.

要修改代码，请更改

Transform GetClosestObject (Transform[] gameObjects) {

到

Transform GetClosestObject (IEnumerable<Transform> gameObjects) {

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