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Runtime scope and `main` symbol is different inside or outside a function


Runtime scope and `main` symbol is different inside or outside a function

By : Mukesh S
Date : October 22 2020, 08:10 AM
hop of those help? There are two different mains floating around (well, main gets redefined mid-file).
code :
from unittest import *
unittest_main = main
def main(argv=None):  # pylint: disable=function-redefined
  def main_wrapper():
    args = argv
    if args is None:
      args = sys.argv
    return app.run(main=g_main, argv=args)
  benchmark.benchmarks_main(true_main=main_wrapper)


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How to make inside function not go out of main function scope when doing chaining?

How to make inside function not go out of main function scope when doing chaining?


By : Xiyang Zhang
Date : March 29 2020, 07:55 AM
around this issue Building on ethagnawl's answer, you can use this trick to force your function to new itself if the caller forgets:
code :
function testFunc() {
    // if the caller forgot their new keyword, do it for them
    if (!(this instanceof testFunc)) {
        return new testFunc();
    }

    this.insideFunc = function(msg) {
        alert(msg);
    }
    return this;
}
C++: Pass variable from function outside main into function call inside main

C++: Pass variable from function outside main into function call inside main


By : SteveP
Date : March 29 2020, 07:55 AM
wish of those help Simply return flipCount back to main and then let main pass it as an argument to flipCoin.
code :
int main() {
  // ...
  // Get the flip count from the user
  int flipCount = promptUser();
  // Flip the coin that many times
  flipCoin(seconds, flipCount);
  // ...
}

int promptUser() {
  int flipCount;
  cout "Enter flip count: " << endl;
  cin >> flipCount;
  // Return the result of prompting the user back to main
  return flipCount;
}

void flipCoin(time_t seconds, int flipCount) {
  // ...
}
main              promptUser      flipCoin
  |                   :               :
  |------------------>|               :
    "How many flips?" |               :
                      |               :
  |<------------------|               :
  |         3         :               :
  |                   :               :
  |---------------------------------->|
        "Flip the coin 3 times!"      |
                      :               |
  |<----------------------------------|
  |        <void>     :               :
  V
 END
Error Cannot find Symbol Main(); Line 20 Symbol: Method Main() Location class Main 1 error

Error Cannot find Symbol Main(); Line 20 Symbol: Method Main() Location class Main 1 error


By : Ankit Nautiyal
Date : March 29 2020, 07:55 AM
I wish this help you If you are trying to create a instance of class Main then the syntax should be :
code :
 Main m = new Main();
Accesing variable declared in the main function inside enclosing function and than return it back from main function

Accesing variable declared in the main function inside enclosing function and than return it back from main function


By : abdulrauf
Date : March 29 2020, 07:55 AM
should help you out getStreams probably spawns another thread, that is why you attach a callback.
It will spawn another thread because it wants to do a long running operation, so that 1 it does not hang the main thread & 2 you can give some other feedback to your user until it returns you the answer (in its callback).
code :
private String[][] GetGooglePlaces(List<NameValuePair>[] nameValuePairs) {
    String[][] pArray = null;

        CountDownLatch countDownLatch = new CountDownLatch(1); // Set up a latch 

        try {   
            iGPlaceApi.getStreams(itemsPerPage, pageNumber * itemsPerPage, new Callback<mGooglePlacesApiResponse>() {

                @Override
                public void failure(RetrofitError retrofitError) {
                    //TODO
                }

                @Override
                public void success(mGooglePlacesApiResponse obj, Response arg1) {
                    pArray = new String[obj.results.size()][4];
                    for (int i = 0; i < obj.results.size(); i++) {
                        mGooglePlaces.place place = obj.results.get(i);
                        pArray[i][0] = place.icon;
                        pArray[i][1] = place.name;

                    }
                    countDownLatch.countDown(); // unlock the latch when you get your callback
                }
            });

        try {
            countDownLatch.await(30, TimeUnit.SECONDS);  // make it wait before you return
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }

        return pArray;
    }
private void getGooglePlaces(GooglePlacesListener finishedListener) {
        try {   
            iGPlaceApi.getStreams(itemsPerPage, pageNumber * itemsPerPage, new Callback<GooglePlacesApiResponse>() {

                @Override
                public void failure(RetrofitError retrofitError) {
                    finishedListener.onFailure();
                }

                @Override
                public void success(mGooglePlacesApiResponse obj, Response arg1) {
                    String[][] pArray = new String[obj.results.size()][4];
                    for (int i = 0; i < obj.results.size(); i++) {
                        mGooglePlaces.place place = obj.results.get(i);
                        pArray[i][0] = place.icon;
                        pArray[i][1] = place.name;

                    }
                    finishedListener.onRetrieved(pArray);
                }
            });
    }

  public interface GooglePlacesListener {
       void onRetrieved(String[][] places);
       void onFailure();
  }
In C, if objects declared at block scope have no linkage, why does function declaration inside main() without "exte

In C, if objects declared at block scope have no linkage, why does function declaration inside main() without "exte


By : Daniel Greenaway
Date : March 29 2020, 07:55 AM
should help you out
and that objects declared at block scope, as within a function body, have no linkage unless preceded with the keyword "extern" or "static".
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