[Solved] get all children names from object

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 i … Read more

[Solved] Get the largest, average and smallest value [closed]

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, 3, … Read more

[Solved] How to find the difference between 1st row and nth row of a dataframe based on a condition using Spark Windowing

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) df … Read more

[Solved] Multithreading is an extension of multiprocessing?

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 this … Read more

[Solved] How to use: Password regular expression for different validation [duplicate]

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 more … Read more

[Solved] Array Code-Why Won’t it Compile?

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 solved Array Code-Why Won’t it Compile?

[Solved] Which of these if the correct way to use seekg? [closed]

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. 2 … Read more

[Solved] Using `Set` Argument to Scala Code in Java

Demonstrating what the commenter said: scala> import collection.JavaConverters._ import collection.JavaConverters._ scala> val js = (1 to 10).toSet.asJava js: java.util.Set[Int] = [5, 10, 1, 6, 9, 2, 7, 3, 8, 4] scala> def f(is: collection.mutable.Set[Int]) = is.size f: (is: scala.collection.mutable.Set[Int])Int scala> def g(js: java.util.Set[Int]) = f(js.asScala) g: (js: java.util.Set[Int])Int scala> g(js) res0: Int = 10 3 … Read more

[Solved] Make list of 2-value tuples of all possible combinations of another list

Update: Now the situation looks a bit different as you updated the question. Here’s a quick snippet thrown together using pandas and numpy (for the sake of simplicity we replace missing ratings with zero): import numpy as np importport pandas as pd from itertools import combinations df = pd.DataFrame(critics).T.fillna(0) distances = [] for critic1, critic2 … Read more

[Solved] Radio button inside the UITableview not working

create the one int value int selectstr; UIButton * button; – (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @”cell”; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:nil]; if (cell == nil) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] ; } UILabel * title = [[UILabel alloc] initWithFrame:CGRectMake(50.0, 14.0, 215.0, 36.0)]; title.backgroundColor = [UIColor clearColor]; title.textAlignment … Read more

[Solved] Linux programming in C++ [closed]

The Unix API is C (as is the Windows API); any calls into Unix will look like C. That doesn’t stop you from using C++, however: if the function requires a char const*, for example, you can call std::string::c_str() on an std::string. Whether you want the Unix function (e.g read()) or the C++ (>> on … Read more