<p>I'd like to find the string between the two paragraph tags.</p><br><p>And also this string</p>
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我如何获得前两个段落标记之间的字符串?然后,我如何获得第2段标签之间的字符串?
我有一个像这样的Textfield:
class Comment(models.Model):
...
comment_text = models.TextField(max_length=650, blank=True, null=True)
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当有人张贴的链接TextField,例如www.stackoverflow.com,我希望它是可点击(嵌套在一个<a>标签).有没有办法用代码而不使用文本编辑器?
我有一个sortedBy{}声明打算List按元素的长度对a 进行排序String:
var animals: List<String> = listOf("tiger", "cat", "dragon", "elephant")
fun strLength(it: String) = it.length
animals.sortedBy { strLength(it) }
animals.forEach {println(it)}
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但是它只打印初始订单。知道为什么吗?
这个答案说对象类型在对象类型的lateinit上使用null值。有人可以详细说明吗?“使用空值”是什么意思?
此外,它说“对于原始类型,没有这样的值”-为什么没有
我想从 Firestore 数组中删除多个元素:
var eliminatedThisRound = []
for (const player in players){
if (players[player].eliminated === false && players[player].answer !== answer) {
eliminatedThisRound.push(players[player].uid);
}
}
var update = {
roundFinished: true,
nextRound: date.valueOf() + 12000,seconds
players: updatedPlayers,
remainingPlayers: admin.firestore.FieldValue.arrayRemove(eliminatedThisRound)
}
await t.update(gameRef, update);
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上面返回此错误:
transaction failure: Error: Element at index 0 is not a valid array element. Nested arrays are not supported.
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所以如果我知道这些值就好了,因为我可以做这样的事情:
remainingPlayers: admin.firestore.FieldValue.arrayRemove("player1", "player2")
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但是我还没有找到使参数动态化的方法arrayRemove()。
任何想法?
node.js firebase google-cloud-platform google-cloud-functions google-cloud-firestore
我已按照 Apple 教程中的所有步骤添加自定义字体:
我已将字体文件添加到名为的文件夹下fonts:
我已通过将字体添加到以下位置来注册字体Info.plist:
然而 Xcode 无法使用它们/找到它们:
Button(action: {}){
Text("View profile")
.font(Font.custom("seravekBold.tff", size: 20.0))
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我也尝试过测试这个方法:
for family in UIFont.familyNames.sorted() {
let names = UIFont.fontNames(forFamilyName: family)
print("Family: \(family) Font names: \(names)")
}
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在 my 中AppDelegate打印所有 UI 字体,但我添加的字体 ( seravek) 不显示。
知道问题是什么吗?
这是我的链接:
Link("Terms + Conditions", destination: URL(string: "https://my.app/terms_and_conditions.html")!)
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我知道它Text()有一个underline()修饰符,但似乎没有一个用于Link().
任何的想法?
这是我的快速端点,它是通过Stripe 的 webhook调用的:
\nconst functions = require(\'firebase-functions\');\nconst bodyParser = require(\'body-parser\')\nconst app = require(\'express\')();\nconst stripe = require(\'stripe\')(functions.config().stripe.test.secret);\nconst endpointSecret = functions.config().stripe.test.webhookkey;\n\napp.post(\'/stripe_webhook\', bodyParser.raw({type: \'application/json\'}), async (request, response) => {\n const event = request.body;\n // Only verify the event if you have an endpoint secret defined.\n // Otherwise use the basic event deserialized with JSON.parse\n if (endpointSecret) {\n // Get the signature sent by Stripe\n const signature = request.headers[\'stripe-signature\'];\n try {\n const eventConstruct = stripe.webhooks.constructEvent(\n request.body,\n signature,\n endpointSecret\n );\n } catch (err) …Run Code Online (Sandbox Code Playgroud) node.js express stripe-payments firebase google-cloud-functions
我想存储每个游戏级别的固定设置。我希望它的结构如下:
namespace LevelSettings
{
namespace Bar
{
public static int ExtraActiveBlocks = 3;
"Level1"
{ public static float Speed = 0.6f;
public static string ActiveColor = "red";
public static string InactiveColor = "black";
},
"Level2"
{
public static float Speed = 0.6f;
public static string ActiveColor = "red";
public static string InactiveColor = "black";
},
"Level3"
{
public static float Speed = 0.6f;
public static string ActiveColor = "red";
public static string InactiveColor = "black";
}
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这显然不是有效的 C# 代码。不过我想问如何用 C# …