arrays

问题 So i am running into trouble while iterating through a string and inserting it's chars as index-arrays into a multidimensional,associative array. So basically a bunch of multidimensional arrays in multidimensional arrays in multidimensional arrays..... That is a bit troublesome as i cant do it by hand. I need an automated way to do this with a bunch of strings. The following example will explain it a bit better i think: //string i want to enter $string = 'ADAM'; //array i want to end up with

问题 I completely stuck with slider with url links inside the Array. How to make this code run appropriate? This is it: https://codepen.io/konradszymanski/pen/VwvLgYG?editors=0110 or here is html: <script src='https://kit.fontawesome.com/a076d05399.js'></script> <div class="container"> <button class="left" onclick="" ><i class='fas fa-angle-left'></i></button> <button class="right" onclick="next()"><i class='fas fa-angle-right'></i></button> </div> and js: var images = [{img: "https://upload

问题 I see code like this and I understand it as making an array nullable but I dont understand why do we need it since arrays are ref types, so they are already nullable. So, my question is why do we need this? private readonly decimal?[] _amounts = new decimal?[_count]; 回答1: It's worth to mention that from C# 8.0 you can have a nullable reference type : https://docs.microsoft.com/en-us/dotnet/csharp/tutorials/nullable-reference-types but as others mentioned this: private readonly decimal?[]

问题 I have the following functions, I am trying to read a string from my MongoDB database which is an image decode it and send it to my Vue frontend to be downloaded. @GetMapping(path = "/signature/{signatureId}", produces = MediaType.IMAGE_PNG_VALUE) public byte[] downloadSignature(String signatureId) { Signature signature = routeRepository.findBySignature(signature); byte[] bytes = Base64.getDecoder().decode(signature.getSignature().getBytes(StandardCharsets.UTF_8)); // This try-catch just

问题 I'd like to generate the following number sequence in one go using a functional initialization construct: Array(0, 0, 0, 0, 3, 3, 6, 6, 9, 9, ..., n*3, n*3) One way is to do: Array.fill[Int](2)(0) ++ Array.tabulate(4)(_*3) but I'd need to double each value of the second part of the construct i.e. to get 0, 0 then 3, 3 etc. How can I duplicate the values of the second construct? I also couldn't figure out a mathematical function that would generate such sequence. 回答1: Consider tail-recursive

问题 I'd like to generate the following number sequence in one go using a functional initialization construct: Array(0, 0, 0, 0, 3, 3, 6, 6, 9, 9, ..., n*3, n*3) One way is to do: Array.fill[Int](2)(0) ++ Array.tabulate(4)(_*3) but I'd need to double each value of the second part of the construct i.e. to get 0, 0 then 3, 3 etc. How can I duplicate the values of the second construct? I also couldn't figure out a mathematical function that would generate such sequence. 回答1: Consider tail-recursive

问题 I have a given array with an undetermined quantity of elements, the array can be numbers or strings, then I need to generate a new array of N elements made from the iterated elements of the first array I already have a function to do it, but it only works if the original array are consecutive numbers, it doesn't work with strings. I have a gazillion of ideas on how to achieve it. I could just concatenate the array to a new one until its equal or greater than the required quantity of elements,

问题 I made a custom form to display in Wordpress Woocommerce checkout page, where user must select their age before making the purchase. The idea is so that people who are under 18 years old would not be able to make a purchase. Currently, the code displays the form and it is all set, but 'min' and 'max' features, which I would require to limit age insertion between 18 and 99, do not apply for some reason. What do I require in order to make 'min' and 'max' functions to apply? add_action(

问题 I made a custom form to display in Wordpress Woocommerce checkout page, where user must select their age before making the purchase. The idea is so that people who are under 18 years old would not be able to make a purchase. Currently, the code displays the form and it is all set, but 'min' and 'max' features, which I would require to limit age insertion between 18 and 99, do not apply for some reason. What do I require in order to make 'min' and 'max' functions to apply? add_action(

问题 I am very amateur when it comes to scipy. I am trying to use scipy's fmin function on a multidimensional variable system. For the sake of simplicity I am using list of list of list's. My data is 12 dimensional, when I enter np.shape(DATA) it returns (3,2,2) , I am not even sure if scipy can handle that many dimensions, if not no problem I can reduce them, the point is that the optimize.fmin() function doesn't accept list based arrays as x0 initial parameters, so I need help either rewriting