我使用xml2js将以下xml字符串转换为json
export async function parseXml(xmlString: string) {
return await new Promise((resolve, reject) =>
parseString(xmlString, (err: any, jsonData: Book) => {
if (err) {
reject(`Unable to parse to xml due to: ${err}`);
}
console.log(JSON.stri
好了,有没有人能教我如何正确地迭代一个动态大小的数组?我的意思是:
my_array = [1, 2, 3, 4, 2, 5, 15, 2] # <= there are three 2 inside my_array
然后我想添加“好”,每次迭代达到整数2,我尝试了几个方法,但没有找到方法,这是我尝试过的最好的方法(仍然没有得到我想要的结果)
# First Method
for i in 0..(my_array.length - 1)
my_array.insert(i + 1, "good") if my_array[i] == 2
end
p my_arr
希望标题不是太混乱,但进一步解释如下。
var listName = ["Alexandros","Halvar","Herman","Luciano","Natana","Nihal","Priscilla","Tanja","Trish","Trish"]
var listID = ["10","6","4","8","1","7",&
我一直在阅读关于迭代器和Iterable in ES6的文章。我看到了下面的一个例子。
let someArr = [1, 2, 3, 4];
let iteratorVar = someArr[Symbol.iterator]();
console.log(iteratorVar.next().value); // If we log for 5 times, it will print all array elements.
但我的怀疑是,我们可以简单地使用for、while和etc循环从数组中获取每个元素,如下所示
for (let i = 0; i < someArr.len
我有一个如下所示的函数:
public function foo ($cities = array('anaheim', 'baker', 'colfax') )
{
$db = global instance of Zend_Db_Adapter_Pdo_Mysql...
$query = 'SELECT name FROM user WHERE city IN ('.implode(',',$cities).')';
$result = $db->fetchAll
我想在不同的分配上复制数组的数组。
我知道我可以通过以下方式复制数组:
a = [[1, 2], [3, 4]]
b = a.slice() // this makes sure that a and b are allocated differently in memory
如果我在b内部改变了一些东西,那么当然,
b[0] = 'abc'
console.log(a, b) // expect a = [[1,2], [3,4]] and b = ['abc', [3,4]]
但是当我执行下面的操作时,a也会发生变化...!
b[0][0] = 'a