foreach

问题 in my code I have this: var body: some View { NavigationView { VStack(spacing: 0) { ScrollView(.vertical, showsIndicators: false) { VStack(spacing: 18) { ScrollView(.horizontal, showsIndicators: false){ HStack(spacing: 20){ Text("teste") .frame(height: 180) .frame(width: 330) .background(Color.blue) .cornerRadius(15) Text("teste") .frame(height: 180) .frame(width: 330) .background(Color.green) .cornerRadius(15) Text("teste") .frame(height: 180) .frame(width: 330) .background(Color.pink)

问题 I have an input tag to upload multiple images and upload them to cloudinary using cloudinary and formidable packages. Ideally, i wanted to pull the URL and save it in my DB where i have all the rest information. But failed to retrieve the URLs shown below in array. Target it to create an object to be saved in the DB with the URLs. app.post("/newcampbook",(req,res)=>{ new formidable.IncomingForm({ multiples: true }).parse(req,(err,fields,file)=>{ if(!err){ var pathArray = []; file.image

问题 i have this below code > .foreach("${plist}", "newshole") { > exec( > http("get the user id") > .get("${newshole}/jcr:content.1.json") > .headers(headers_2) > .check(bodyString.saveAs("Res1")) > ) > exec(session => { > var mynewshole = session("Res1").as[String] > if (!mynewshole.contains("testingInProgress")) { > println("Doesn't contain: " + mynewshole) > (http("post the user id") > .post("${newshole}/jcr:content") > .headers(headers_2) > .formParam("testingInProgress", session.userId)) >

问题 The goal is to have a TextField that takes characters as they're being entered and display them below the TextField in a 'pile'. By pile I mean, each new character is displayed on top of the last one. Piling the letters up is easy enough - I use ForEach to loop over an array inside a ZStack . To get the characters in the array, I used a custom binding. It works, but the problem is that the characters get repeated each time a new character is typed. For example, if the user types CAT, first

问题 This question already has answers here : What does `return` keyword mean inside `forEach` function? [duplicate] (2 answers) Closed 2 years ago . I try to check if an array of object has a key value pair with the key service_tags and a value of an array including the string "trace" . If this array has it, I also want to return the position of the object. My try returns undefined . gg.fields = [ { ... }, {value: "D", display_name: "Nat."}, { "value":"Likes redwine", "display_name":"Trace 2",

问题 If I have this code: @State var n = 3 var body: some View { VStack { Button(action:{ if self.n == 3 { self.n = 5 } else { self.n = 3 } }) { Text("Click me") } ForEach(1..<self.n+1) { i in Text(String(i)) } } } I expect this code to toggle between 1 2 3 and 1 2 3 4 5 on the screen when you click the button, however it only shows 1 2 3 . How would I fix this? 回答1: The form of ForEach that you have used is fine if the number of items is constant, but if the Views might change, then you need to

问题 I'm looking for your personal thoughts on the best way to do this as there a number of ways that I can see to get to the same end. I have a store front that has multiple different booklets that can be ordered in any combination. Each booklet item has L x W x H and weight in the database. They're all really the same L x W, it's the thickness and weight that varies. I also have a set max box size. I know I can fit a height of 10.5 in the largest box size. I can combine the books however for

问题 I started this little blog project and I think I have just made a mistake by not including fetch_assoc method. This is the code: $data = new database(); $sql = "SELECT * FROM post "; $article = $data->select($sql); foreach ($article as $value) : ?> <div class="blog-post"> <h2 class="blog-post-title"><?= $value["blog_title"]; ?></h2> and this is how the select methode look like: public function select($sql){ $result = $this->con->query($sql) or die($this->con->error.__LINE__); if ($result->num

问题 i was searching how to calculate values in an array loop, a foreach preciselly. The problem is that i have to calculate the days between dates of this result. Example: <ul> <?php $values[] = array('example'=>'example1','date'=>'2016-25-12'); $values[] = array('example'=>'example2','date'=>'2016-26-12'); $values[] = array('example'=>'example3','date'=>'2016-28-12'); $values[] = array('example'=>'example4','date'=>'2016-30-12'); foreach($values[] as $example){ echo "<li>".$example['example']."

问题 I am having trouble exporting a data frame to %dopar% in foreach package. It works if I use %do% together with registerDoSEQ() , but with registerDoParallel() I always get: Error in { : task 1 failed - "object 'kyphosis' not found" Here is a reproducible example using kyphosis data from rpart package. I am trying to parallelize stepwise regression a little: library(doParallel) library(foreach) library(rpart) invars <- c('Age', 'Number', 'Start') n_vars <- 2 vars <- length(invars) iter <-