Kirat[ad_1] For synchronizing a HashMap,you can use Collections.synchronizedMap(<your hashmap reference>) which will return a synchronized map for you, which is thread-safe. [ad_2] solved How to change HashMap as Synchoronized
[ad_1] It looks like you’re looking for Reflection Example: public class A { int integer{get; set;} } PropertyInfo prop = typeof(A).GetProperty(“integer”); A a = new A(); prop.GetValue(a, null); prop.SetValue(a, 1234, null); You still need a reference to set/get values, but this seems about what you’re wanting. 1 [ad_2] solved How to store reference to Class’ … Read more
[ad_1] In an unordered_set, the order of inserts does not necessarily correspond to the order that you will get when the set is iterated (hence the name “unordered”). Part of the reason why a bi-directional iterator is not supported(using a — operator) in this data structure is because being able to go backwards/forwards on an … Read more
[ad_1] You need to use foreground service, OS will not kill it, see Running a Service in the Foreground [ad_2] solved Android forever in background
[ad_1] You could write a simple recursive function that will traverse the contents of your tree: var familyTree = { name: ‘Alex’, children: [ { name: ‘Ricky’, children: [ ] }, { name: ‘John’, children: [ { name: ‘Tom’, children: [ ] } ] } ] }; var traverse = function(tree) { console.log(tree.name); for (var … Read more
[ad_1] Since you tagged this with C++, I would use std::vector objects mixed with the std::sort() algorithm for making it easy to find these stats. Here’s a simple example. #include <algorithm> #include <iostream> #include <vector> int main() { std::vector<float> numbers = { 1, 4, 3, 2 }; std::sort(numbers.begin(), numbers.end()); // numbers = { 1, 2, … Read more
[ad_1] Shown here is a PySpark solution. You can use conditional aggregation with max(when…)) to get the necessary difference of ranks with the first ‘PD’ row. After getting the difference, use a when… to null out rows with negative ranks as they all occur after the first ‘PD’ row. # necessary imports w1 = Window.partitionBy(df.id).orderBy(df.svc_dt) … Read more
[ad_1] You create an instance of B that is lets say “Bigger”, but the variable ‘a’ is converted into class A that is “Smaller” and contains the method print A. You did something similar to: A : IClass B : IClass The interface exposes some method that is in both A and B, and you … Read more
[ad_1] Well, yes, to some extent this is true. But it’s a simplified statement, there are significant differences. Shortly… Multiprocessing Processes are isolated from each other by OS. Each process has its own virtual memory space. They need to use IPC methods for communication with each other. If a process encounters e.g. segmentation fault, only … Read more
[ad_1] Resulting from the descussion, you need one regular expression for each check to perform. At least 8 characters: ^.{8,}$ No whitespace character: ^\S*$ Both combined: ^\S{8,}$ Explanation: ^ Start of the string $ End of the string . Any character (inclusive whitespace) \S Any characters that is not whitespace {8,} previous expression 8 or … Read more
[ad_1] Now that you shared your repo I can confirm the problem is not with the line counter but with your repo… You have duplicated commits in the history! Don’t know how you ended up like that, but you definitely messed up your history tree. 😉 How you may fix it Disclaimer: execute at your … Read more
[ad_1] You are trying to cin to a literal for some reason cin >> “Temp[1]”; Get rid of the quotes, use correct capitalization, and use the index variable i. cin >> temp[i]; 8 [ad_2] solved Array Code-Why Won’t it Compile?
[ad_1] set.add will return false if the element that you wish to add to the Set already exists in the Set (and therefore wasn’t added). Your method returns false if set.add returns false for at least one of the elements of the input List, which means is does what its name implies – checks for … Read more
[ad_1] Try a specific filename instead of a folder. ie; url: “/time/index.html”, Include any errors from the Dev Console (F12 in Browser) to helps us help you. 2 [ad_2] solved Ajax not being called
[ad_1] seekg(a, b) will set the read position to b offset by a bytes. Thus: A.seekg(0, ios::beg) is equivalent to A.seekg(0). A.seekg(0, ios::end) is equivalent to A.seekg(10) if the file is 10 bytes. A.seekg(10, ios::end) is equivalent to A.seekg(20). That won’t work with a 10-byte file. The documentation on seekg would have answered your question. … Read more