Crash Casting Wknsurlrequest As? Other Type

IOS Objective C - Error receiving json data from url

Not 100% sure about your implementation of Provincias but I think your problem is here:

prov.tipoProvincia = [dic objectForKey:@"Provincia"];// -> ok
prov.tipoIdProvincia = [dic objectForKey:@"idProvincia"];// -> try to send int message to convert String to Int
prov.tipoNumActos = [dic objectForKey:@"Actos"]; // -> same here

Your objects in dict are NSString but you need to cast them to NSInteger.

What you could do is:

prov.tipoProvincia = [dic objectForKey:@"Provincia"];// -> ok
prov.tipoIdProvincia = [[dic objectForKey:@"idProvincia"] intValue];// -> you get string but Id is a number
prov.tipoNumActos = [[dic objectForKey:@"Actos"] intValue]; // -> same here

How to stop a function during its execution - JavaScript

Stopping a running function is a bit different than what you are actually showing for code, which is an asynchronous operation happening outside of the function that initiated it.

Running functions can only be terminated from within the function and that is done with either a return statement or by throwing an exception.

return can be called conditionally so that the function doesn't always exit at the same point. This is often the case with form validation functions - - if something is determined to be invalid, a return is encountered so that the form is not submitted. If everything is valid, the return is skipped and the form is submitted.

Here's a simple example with return:

function foo1(){
  console.log("Foo started...");
  if(prompt("Type 1 to terminate right now or anything else to continue...") == "1"){
    return;  // Function will terminate here if this is encountered
  }
  console.log("Foo ending...");  // This will only be run if something other than 1 was entered
}

foo1();

Early exit from function?

You can just use return.

function myfunction() {
     if(a == 'stop') 
         return;
}

This will send a return value of undefined to whatever called the function.

var x = myfunction();

console.log( x );  // console shows undefined

Of course, you can specify a different return value. Whatever value is returned will be logged to the console using the above example.

return false;
return true;
return "some string";
return 12345;

Stop Javascript Function execution from another Function

JavaScript is normally single threaded - meaning that while a function is executed in the browser no other code can run at the same time - including event handlers such as onclick (they will be triggered only after the function is complete). So, in this case you cannot interrupt the execution of a function from code.

There are two workounds:

1. The long running function could take breaks intentionally, allowing other code to execute.

   //set this to true from an event handler to stop the execution
   var cancelled = false;
   
   function longRunningFunction() {
     if (cancelled) {
       return;
     } 
   
     // do some work, but not all
     // save your progress to be able to resume when called again
   
     if (!done) {
       // release control, so that handlers can be called, and continue in 10ms
       setTimeout(longRunningFunction, 10);
     }
   }
   

2. Use web workers. They allow running code in parallel, but have some restrictions and are not supported by all browsers.

stop executing the loop until the function is completed

Note: Can't test it at the moment, might run into the same problem

Your displayBlocks method is not awaitable. Have you tried something like

const displayBlocks = async (key) => {  
                return new Promise((res,rej) => { // return with promise to make it awaitable
                    setTimeout(() => {
                            divArray.classList.remove('active');
                            res('color removed');
                        }, 500)
                    });
                    console.log(key);
                    ref.current.childNodes[key].classList.add('active'); 
                    let result = await promise;     
                    return result;          

    }

    const handleNewGame = () => {
        blockArray = []
        // generate array with random cells according to points
        for (let i = 0;i< props.points;i++) {
            let key = Math.floor(Math.random() * (props.board.length)) + 0;
            var res = await displayBlocks(key); // await should halt the loop
            console.log(res);
            blockArray.push(key);                               
        }
        console.log(blockArray);
    }

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