Instantiate a derived class of List

I have a generic class MyList<T> : MyBaseClass, IList<T> which accepts an unknown amount of unknown element types. Somewhere else I declare some custom lists BUT without instantiating them (it is a must due to some general restrictions): MyList<MyObjectType1> type1List1, type1List2,… ; MyList<MyObjectType2> type2List1, type2List2,… ; I would like to instantiate those custom lists at…

Details

TypeError: req.next is not a function, but can’t see calling file

When I input a bad link in my express server, like site.com/asfasdfgasd/asdfasdfasdf.png, I get this error: 0|www | TypeError: req.next is not a function 0|www | at done (/home/lospec/htdocs/node_modules/express/lib/response.js:1003:25) 0|www | at /home/lospec/htdocs/node_modules/hbs/lib/hbs.js:85:9 0|www | at FSReqCallback.readFileAfterClose [as oncomplete] (internal/fs/read_file_context.js:53:3) And my entire server crashes. I want to solve this error (which seems most likely…

Details

Want to validate the length for a phone number inside my div in Angular [closed]

I have this phone number textbox and the validations. I would like to add the necessary validation to ensure the phone number is of 10 digits. <input #phoneNumber=”ngModel” name=”phoneNumber” [(ngModel)]=”shipping.phoneNumber” type=”text” class=”form-control” id=”phoneNumber” placeholder=”0123456789″ required> <div class=”invalid-feedback” *ngIf=”phone.touched && phone.invalid && phone.value.length<=10″> Please enter a valid phone number. </div>

Details