parent-child

问题 I have a meetingRepository class that returns IEnumerable and an attendeeRepository class that returns IEnumerable<Attendee> public class meetingRepository { IEnumerable<Meeting> GetAll() { //return all Meetings } } public class attendeeRepository { IEnumerable<Attendee>GetAll() { //return all Attendees } } public class Meeting { public int Id { get; set; } public DateTime Date { get; set; } public string FilePath { get; set; } public int Duration { get; set; } public IEnumerable<Attendee>

问题 I am creating dynamic multilevel menu in laravel, I am able to get parent and child relationship and display the menu but unable to get and display if relationship goes one more level down. Please assist. My Model: public function parent() { return $this->belongsTo('App\Menu', 'parent_id'); } public function children() { return $this->hasMany('App\Menu', 'parent_id'); } public function gchildren() { return $this->hasMany('App\Menu', 'parent_id'); } My Nav View: <ul class="navbar-nav">

问题 I have a CSV file (parent child format). Is it possible to convert to JSON format by using JQ ? CSV file <pre> id parent_id text 1 NULL engine 2 1 exhaust 3 1 cooling 4 3 cooling fan 5 3 water pump 6 NULL frame 7 6 wheels 8 6 brakes 9 8 brake calipers 10 6 cables </Pre> JSON file <Pre> [ { "id": "1", "text": "engine", "children": [ { "id": "2", "text": "exhaust", "children": [] }, { "id": "3", "text": "cooling", "children": [ { "id": "4", "text": "cooling fan", "children": [] }, { "id": "5",

问题 I would like to know - if possible - how to get the pid of a process' grandparent (or further). To be more specific, I want for a process to print its depth in a process tree. For example, when starting with the following: int main() { int creator_id = (int) getpid(); pid_t pid1 = fork(); pid_t pid2 = fork(); pid_t pid3 = fork(); //print depth in process tree of each process return 0; } According to my theory, the tree will look like this: 0 /|\ / | \ / | \ 0 0 0 / \ | 0 0 0 / 0 So my first

问题 I would like to know - if possible - how to get the pid of a process' grandparent (or further). To be more specific, I want for a process to print its depth in a process tree. For example, when starting with the following: int main() { int creator_id = (int) getpid(); pid_t pid1 = fork(); pid_t pid2 = fork(); pid_t pid3 = fork(); //print depth in process tree of each process return 0; } According to my theory, the tree will look like this: 0 /|\ / | \ / | \ 0 0 0 / \ | 0 0 0 / 0 So my first

问题 how can I use parent/child relationship in ElasticSearch-7 all my documents have _doc type I want to implement something like the one shown below // index = `order_item` { "ID": 1, "Name": "Shoes", "Price": 9.99, "OrderID": 82 }, { "ID": 2, "Name": "Hat", "Price": 19.99, "OrderID": 82 } // index = `order` { "ID": 82, "Customer": "John Smith" } I want join these indices as below with parent/child relationship order { "ID": 82, "Customer": "John Smith", "order-item": [ { "ID": 1, "Name": "Shoes

问题 how can I use parent/child relationship in ElasticSearch-7 all my documents have _doc type I want to implement something like the one shown below // index = `order_item` { "ID": 1, "Name": "Shoes", "Price": 9.99, "OrderID": 82 }, { "ID": 2, "Name": "Hat", "Price": 19.99, "OrderID": 82 } // index = `order` { "ID": 82, "Customer": "John Smith" } I want join these indices as below with parent/child relationship order { "ID": 82, "Customer": "John Smith", "order-item": [ { "ID": 1, "Name": "Shoes

问题 how can I use parent/child relationship in ElasticSearch-7 all my documents have _doc type I want to implement something like the one shown below // index = `order_item` { "ID": 1, "Name": "Shoes", "Price": 9.99, "OrderID": 82 }, { "ID": 2, "Name": "Hat", "Price": 19.99, "OrderID": 82 } // index = `order` { "ID": 82, "Customer": "John Smith" } I want join these indices as below with parent/child relationship order { "ID": 82, "Customer": "John Smith", "order-item": [ { "ID": 1, "Name": "Shoes

问题 I'm new to Svelte. I have 2 Svelte components in an HTML parent-child relationship – as opposed to a Svelte P/C relationship (where 1 Svelte component imports another). Ultimately, I want something like this (could have many Accs.): <Accordion header={--property from SvelteComponent-- }> <SvelteComponent /> </Accordion> I would like the SvelteComponent to define the header used in the Accordion (it can be dynamic). I can use stores for this but that seems too messy. Accordion does contain a

问题 Scroll down to see new update Update:: In other word: I want to launch another program in the manner of a shell on Windows. Need a two way communication between parent and child process using c++ on Windows. The parent is my program and the child is a random console application (like mysql terminal). It's been a couple days searching but couldn't find any working solution for Windows. Also MS documentations is not helping. Here i got a sample code from a question asked three years ago. How