[Solved] Dataframe with string columns – each column need to split into multiple at word “and” – R [closed]

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Here is what worked for me – using inputs from above and various other threads on SO. I am a complete newbie to R and my objective is to migrate work from excel to R. # returns string w/o leading or trailing whitespace trim <- function (x) gsub(“^\\s+|\\s+$”, “”, x) #——————————————————————————– # OBJECTIVE – migrate … Read more

[Solved] How for loop works?

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Here is an explanation of everything happening in the for loop // keeps the for loop going while x is less than numbers.length which is the length of nmbers // sets x to 0 initialy | increases x by +1 each time it restarts to begin the loop // V V V for (var x … Read more

[Solved] How can use JAVA 8 filter for following code [closed]

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Following snippet might be a point to start with. URL url = new URL(“http://example.com/acct/StatsClientListService” + “?clientType=AllClient&something=interesting”); Stream.of(url.getQuery().split(“&”)) .collect(Collectors.toMap( s -> s.replaceFirst(“^(.*)=.*”, “$1”), s -> s.replaceFirst(“^.*=(.*)”, “$1”))) .forEach((k, v) -> System.out.printf(“param: %s value: %s%n”, k, v) ); output param: clientType value: AllClient param: something value: interesting edit If the URL string contain only the path and … Read more

[Solved] how to pass a class object as parameter

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Yes it is possible to pass an object as a parameter. class list { //some functions }; list merge(const list& l1, const list& l2) { list mergedList; //logic to merge l1 and l2 and copy it to mergedList return mergedList; } int main() { list LL1; list LL2; list mergedList = merge(LL1, LL2); } 4 … Read more

[Solved] completing this code (c) if you can

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Change this: Nodes_maker(count2,&currentnode); to this: Nodes_maker(count2, currentnode); and the error will go away. That is because the prototype of the function is Nodes_maker(int nums,Node *currentnode) and you have Node* currentnode;. However, you need to work on your logic. I mean you dynamically allocate memory, but you don’t return the pointer (your function returns void). Good … Read more

[Solved] Access text on click

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So you want to know on what value you’ve clicked on, but the binding remains on the row? Perfectly possible: $(document).ready(function(){ $(“.x”).click(function(event){ console.log(event.target); //Log where you clicked console.log($(event.target).text()); }); }); Why should this work? In the event handler that we add to the clicking event when we click the elements with class x (every row), … Read more

[Solved] array_push() expects parameter 1 to be array, null given php error message

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You get the error : Warning: array_push() expects parameter 1 to be array, null given because your $_SESSION[‘messages’] variable is never set. When this part of your code gets executed, session_start(); if (session_status() == PHP_SESSION_NONE) { $_SESSION[‘messages’] = array(); } The first line starts a new session. So session_status() == PHP_SESSION_NONE will never be true … Read more

[Solved] How to convert char array into string for DateTime.Parse? [closed]

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Consider this: var date = “11252017”; var arrDate = date.ToArray(); var strDate = arrDate[0] + arrDate[1] + “https://stackoverflow.com/” + arrDate[2] + arrDate[3] + “https://stackoverflow.com/” + arrDate[4] + arrDate[5] + arrDate[6] + arrDate[7]; // 98/25/2017 Notice that: ‘1’ + ‘1’ = 98* ⇒ char + char = int 98 + “https://stackoverflow.com/” = “98/” ⇒ int + … Read more

[Solved] Generate random string from list of string in C#? [closed]

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Try this: class Program { static void Main(string[] args) { int myRandomIndex = 0; var myList = new List<string>(new[] { “a”, “b”, “c”, “d”, “e”, “f”, “g”, “h”, “i”, “j” }); var results = new List<string>(); var r = new Random(DateTime.Now.Millisecond); for (int ii = 0; ii < 4; ii++) { myRandomIndex = r.Next(myList.Count); results.Add(myList[myRandomIndex]); … Read more