[Solved] I cannot understand why this code gives a segmentation fault. Please, can anyone tell me where have I allocated a memory which cannot be used [closed]

Whoops! Looks like you’re trying to create a variable sized array (which doesn’t exist… kinda) with an undefined variable (which can be anything the system wants it to be). Use pointers instead, and let the user fill the variable before creating the array: int n; std::cin >> n; int* a = new int[n]; Or use … Read more

[Solved] How can I calculate the mid-point between two dates in php [closed]

I have found a way for this – $daysDiff = diffDateTime($StartDate, $EndDate); $midDaysDiff = round($daysDiff[‘days’]/2); $midDate = strtotime(date(“m/d/Y”, strtotime($StartDate)) . “+ $midDaysDiff Days”); function diffDateTime($StartDate, $EndDate) { // returns diff between two dates in days… } solved How can I calculate the mid-point between two dates in php [closed]

[Solved] A toggle button on and off for markers in google maps react

As you already have handleToggle1 function setting the isMarkerVisible flag then on render() you can have this: render() { const markers = this.state.isMarkerVisible ? this.props.policeCall : [] … <your code> return <div> … <your code> {markers.map(({ A, B, M, N, L,O }) => { return ( <Marker onClick={this.onMarkerClick} name={A} info={B} priority={L} position={{ lat: M, lng: … Read more

[Solved] Programming with C# console application

It takes an input string (input), splits it on the space character (input.Split(‘ ‘)) (presumably to get the number of “words”), adds 1 to the .Length of the resulting array (not sure why), converts that number to a binary string (Convert.ToString(int, 2) will convert the int to a base-2 number and return it as a … Read more

[Solved] get value/charts in another workbooks without opening it

I finally used these lines of code Arg = “‘” & Path & “[” & File & “]” & Sheet & “‘!” & “R4C4” ‘Range(Ref.Range(“A1”).Address(, , xlR1C1))C ‘Execute XLM macro GetValue = ExecuteExcel4Macro(Arg) Way more simple with some loops. solved get value/charts in another workbooks without opening it

[Solved] Swift count time untill button is pressed [closed]

You can create a timer fileprivate var timer: Timer? var seconds: Int = 0 func runTimer() { timer = Timer.scheduledTimer(timeInterval: 1, target: self, selector: (#selector(ViewController.updateTimer)), userInfo: nil, repeats: true) } func updateTimer() { seconds += 1 } Now its just a matter on when you start the timer. Options : viewDidLoad , viewWillAppear, viewDidAppear Then … Read more

[Solved] Is mysql count(*) much less efficient than count(specific_field)? [duplicate]

For InnoDB If specific_field is not nullable, they are equivalent and have the same performance. If specific_field is nullable, they don’t do the same thing. COUNT(specific_field) counts the rows which have a not null value of specific_field. This requires looking at the value of specific_field for each row. COUNT(*) simply counts the number of rows … Read more

[Solved] Why no error is thrown in compilation? [closed]

Can this be a way to initialize an array without declaring its size? No. All int *a; does, if defining a pointer to int, which, as not being initialised, points somewhere, “nowhere”, to “invalid” memory. Any invocation of the []-operator on a, without beforehand having made a point to any valid memory (as for example … Read more

[Solved] Min/Max Values of an Array

Methods: public static int getMax(int[] a) and public static int getMin(int[] a) have int[] as their input parameter, but they are later called without any parameters: arr.getMax(); and arr.getMin();. This is the cause of the error you are getting from the compiler. EDIT: You probably want to modify your methods not to be static and … Read more