Ways to clear an existing array A : Method 1. (this was my original answer to the question) A = [];. This code will set the variable A to a new empty array. ... <看更多>

The second way to empty an array is to set its length to zero: a.length = 0;. The length property is read/write property of an Array object. ... <看更多>

There now is a function json::array() to create an empty array. It can also be used with an initializer list (e.g., json::array({"foo", ... ... <看更多>

In this video, we look at how to create an empty Array in JS. ... <看更多>

The following will work: contract Test { struct Object { uint a; string b; string[] c; mapping(uint => uint) d; } Object field; ... ... <看更多>