Check Tables | NullScripts | Best Null Scripts Site In The World

ChkTable can support you in finding out which tables or fields are no longer used in the XF installation. This is an interesting thing, especially after the change from XF1 to XF2. But even beyond that, it is always of interest to know which add-on has left remnants in the DB.

This version is still at an early stage. The first extensive tests were stable and satisfactory. So we are now looking forward to ideas/opinions.

This add-on does not change data, it only reads data.

If…

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Android app java.lang.NullPointerException: Attempt to invoke virtual method ‘java.lang.String java.lang.Object.toString()’ on a null object reference

CheckOutFragment.java

public class CheckoutFragment extends Fragment {

ListView listSubCategory;
Spinner category, subCategory;
DatabaseHelper db;
protected Cursor cursor;
String() list;
String selectedFromCategory;
String() list2;

private CheckoutViewModel mViewModel;

public static CheckoutFragment newInstance() {
    return new CheckoutFragment();
}

@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container,
                         @Nullable Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_checkout, container, false);

    category = view.findViewById(R.id.spinner1);
    subCategory = view.findViewById(R.id.spinner2);
    listSubCategory = view.findViewById(R.id.listsubcategory);
    db = new DatabaseHelper(getContext());


    SQLiteDatabase database = db.getReadableDatabase();
    cursor = database.rawQuery("SELECT * FROM category", null);
    list = new String(cursor.getCount());
    for (int i = 0; i < cursor.getCount(); i++) {
        cursor.moveToPosition(i);
        list(i) = cursor.getString(1).toString();
    }


    category.setAdapter(new ArrayAdapter<>(getContext(), android.R.layout.simple_spinner_dropdown_item, android.R.id.text1, list));

    category.setSelected(true);

    category.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {


            SQLiteDatabase read = db.getReadableDatabase();
            SQLiteDatabase readID = db.getReadableDatabase();
            SQLiteDatabase read2 = db.getReadableDatabase();

            selectedFromCategory = category.getItemAtPosition(position).toString();


            Cursor get = read.rawQuery("SELECT * FROM category WHERE category_name =  '" +
                    selectedFromCategory + "'", null);

            get.moveToFirst();
            if (get.getCount() > 0) {
                get.moveToPosition(0);
                //get id from category
                String selected = get.getString(0);
                CategoryModel categoryModel = db.getCategory(Integer.parseInt(selected));
                String selectedCategory = categoryModel.getId();
                int selectedIdCategory = Integer.parseInt(selectedCategory);
                Cursor catId = readID.rawQuery("SELECT * FROM subcategory WHERE category_id = '" +
                        selectedIdCategory + "'", null);

                Cursor cr = read2.rawQuery("SELECT * FROM subcategory", null);
                list2 = new String(cr.getCount());

                catId.moveToFirst();
                for (int i = 0; i < catId.getCount(); i++) {
                    catId.moveToPosition(i);
                    list2(i) = catId.getString(3).toString();
                }

                listSubCategory.setAdapter(new ArrayAdapter(getContext(), android.R.layout.simple_list_item_1,list2));
            }

DatabaseHelper.java

    public CategoryModel getCategory(int id) {
    SQLiteDatabase db = this.getReadableDatabase();
    Cursor cursor = db.query(TABLE_5, new String(){COL5_1, COL5_2}, COL5_1 + " = ?", new String(){String.valueOf(id)}, null, null, null);
    if (cursor != null) {
        cursor.moveToFirst();
    }
    CategoryModel categoryModel = new CategoryModel(cursor.getString(0), cursor.getString(1));
    return categoryModel;
}

I already input all data and already check all rows and columns in the database so what I’m gonna do is filtering my listview based on what I select from my spinner but the error occurred. After that, I use this code with a custom adapter and the output is showing but I input 3 items only the output shows 3 items and 4 blank items. Sorry for my messy code, still new at programming.

ds.dynamical systems – Does an “almost weak mixing” transformation admit a non null ergodic component?

Problem set up:

Let $mathbf X := (X, mathcal A, mu)$ be a standard probability space.

We say that a measure preserving transformation $T$ on $mathbf X$ is $varepsilon$-almost weak mixing if for every $delta > varepsilon$, and every pair of non-null measurable sets $A, B in mathcal A$, there exists an $N > 0$ such that for all $n > N$, we have $frac{1}{n} sum_{k = 1}^{n} |mu(T^{-k}A cap B) – mu(A)mu(B)| < delta mu(A)mu(B)$.

We say a measure preserving transformation $G$ on $X$ admits an ergodic component if there exists some non-null measurable subset $E$ of $X$ such that $G(E) subset E$, and the “restricted system” ($mathbf E, G_{|E})$, with $mathbf E := (E, mathcal A_{|E}, mu_{|E})$ is ergodic. Here $mathcal A_{|E}$ is the restricted sigma algebra, and $mu_{|E}$ is defined by $mu_{|E}(A) := mu(A cap E)/mu(E)$.

Question: Does there exist some $varepsilon > 0$ such that any $varepsilon$-almost weak mixing transformation $T$ on $mathbf X$ admits an ergodic component?

Remark: This is a potential sharpening of an earlier result.

Registration limit | NullScripts | Best Null Scripts Site In The World

Description:

Limits the number of new registration allowed within time frame set in the options page.

(Example of Options page)

pic001.jpg

(Example of Registration is closed message)

pic002.jpg

Features:

  • All phrases start with registrationlimit_ for your convenience.

Installation:

  1. Download…

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Add unread | NullScripts | Best Null Scripts Site In The World

Description:

Adds unread to thread title links.

Adds unread to whats-new results pages thread titles, for example the New posts and Latest posts. By adding unread, previously visited threads which have no new posts will go to the latest read post instead of the first post, this is assuming the “Read data marking lifetime” has not expired.

Questions and answers:

Q: Will unread be added if the visitor is not logged in?
A: No, it only be added to logged in members.

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Null pointer exception error in getBooleanArrayExtra() in Android studio

I am getting a null pointer exception error while running my code on Android device. I don’t know how to resolve it…
here is my code

For main activity

package com.example.quizappcwh;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.util.SparseBooleanArray;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
private Button yes;
private Button no;
private TextView questionText;
private final String() QuestionsList = {
“1) Python is an interpreted language”,
“2) To execute Python statements, the statements must be entered into a
file”,
“3) Python’s print statement writes items to the screen”,
“4) A full list of Python keywords can be obtained from Python itself,
using the Python keyword module”,
“5) A variable called name refers to the same value as a variable called
NAME”,
“6) The keyword function marks the beginning of a function definition”,
“7) Python determines the beginning and end of a statement based on
whitespace”,
“8) Function int retrieves an integer from a program user”,
“9) Python has three high-level data structures: lists, dictionaries and
hashes”,
“10) Tuples are immutable data types; lists are mutable data types”,
“11) List method append adds an element to the end of the list”,
“12) Dictionary values must be immutable data types”,
“13) Single quote characters (‘) inside a string must be “escaped” using
the backslash character (i.e. ‘)”,
“14) Regular expression processing is built into the Python language”,
“15) The compile function of module re returns an instance of a
SRE_Pattern object”,
“16) None is a Python type whose value indicates that no value exists”
};
boolean() AnswersList = {
true,false,true,true,false,false,true,false,
false,true,true,false,false,false,true,true
};
private int index = 0;
boolean() userInput = new boolean(16);
int score = 0;
void updateScore(){
boolean() a = userInput;
Intent intent = new Intent(this, MainActivity2.class);
intent.putExtra(“INPUT_ANSWERS”,a);
intent.putExtra(“FINAL_SCORE”, score);
startActivity(intent);
}
void calScore(){
for(int i=0;i<16;i++){
if(AnswersList(i)==userInput(i)){
score+=1;
}
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
yes = findViewById(R.id.yes);
no = findViewById(R.id.no);
questionText = findViewById(R.id.questionText);
questionText.setText(QuestionsList(index));
yes.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(index<=QuestionsList.length-1)
{
userInput(index) = true;
index++;
if(index<=QuestionsList.length-1) {
questionText.setText(QuestionsList(index));
}
else{
calScore();
updateScore();
}
}
else{
calScore();
updateScore();
}
}
});
no.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(index<=QuestionsList.length-1)
{
userInput(index) = false;
index++;
if(index<=QuestionsList.length-1) {
questionText.setText(QuestionsList(index));
}
else{
calScore();
updateScore();
}
}
else{
calScore();
updateScore();
}
}
});
}
}

For main activity 2

package com.example.quizappcwh;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity2 extends AppCompatActivity {
private Button previous;
private Button next;
private TextView uaText;
private TextView caText;
private TextView ExpText;
private String() explanation = {
“Explanation: Python is an interpreted language.”,
“Explanation: Python can execute programs stored in files, or it can run
in interactive mode, where users enter lines of code one at a time.”,
“Explanation: Python’s print statement writes items to the screen.”,
“Explanation: A full list of Python keywords can be obtained from Python
itself, using the Python keyword module.n”,
“Explanation: Python is case-sensitive, so name and NAME are two different
variable names.”,
“Explanation: The keyword def marks the beginning of a function
definition.”,
“Explanation: Python determines the beginning and end of a statement based
on whitespace.”,
“Explanation: Function raw_input may be used to retrieve input from the
user. Function int changes returns a non-integer value when passed an integer value.”,
“Explanation: Python’s three high-level data structures are tuples, lists
and dictionaries.”,
“Explanation: Tuples are immutable data types; lists are mutable data
types.”,
“Explanation: List method append adds an element to the end of the list.”,
“Explanation: Dictionary values may be of mutable data types; dictionary
keys, however, must be of immutable data types.”,
“Explanation: When placed within a string, the double quote character (“)
needs to be “escaped” using a backslash, so as not to be confused with one of the
characters delimiting the string.”,
“Explanation: Regular expression processing is contained in the re module.
This module must be imported to perform regular expression processing tasks.”,
“Explanation: The compile function of module re returns an instance of a
SRE_Pattern object.”,
“Explanation: None is a Python type whose value indicates that no value
exists.”,
};
Intent intent = getIntent();
boolean() correct_answers = {
true,false,true,true,false,false,true,false,
false,true,true,false,false,false,true,true
};
boolean() user_answers = intent.getBooleanArrayExtra(“INPUT_ANSWERS”);
// int final_score = intent.getIntExtra(“FINAL_SCORE”,0);
private int i = 0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
uaText = findViewById(R.id.uaText);
caText = findViewById(R.id.caText);
ExpText = findViewById(R.id.ExpText);
next = findViewById(R.id.next);
previous = findViewById(R.id.previous);
setContent(0);
next.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(i<16 && i>=0){
i+=1;
if(i<16){
setContent(i);
}
else{
Toast.makeText(MainActivity2.this, “Invalid Option”,
Toast.LENGTH_SHORT).show();
}
}
else{
Toast.makeText(MainActivity2.this, “Invalid Option”,
Toast.LENGTH_SHORT).show();
}
}
});
previous.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if(i<16 && i>=0){
i-=1;
if(i>=0){
setContent(i);
}
else{
Toast.makeText(MainActivity2.this, “Invalid Option”,
Toast.LENGTH_SHORT).show();
}
}
else{
Toast.makeText(MainActivity2.this, “Invalid Option”,
Toast.LENGTH_SHORT).show();
}
}
});
}
private void setContent(int x){
uaText.setText(Boolean.toString(user_answers(x)));
caText.setText((Boolean.toString(correct_answers(x))));
ExpText.setText(explanation(x));
}
}

Royal | NullScripts | Best Null Scripts Site In The World

mockup-png.170769

There are always new freebies ready for you to enjoy from DohTheme and again we are publishing our first free xenForo 2.0 theme.We have included about 50% of our framework which we’re using in paid themes so you will get a great style options.
I have nothing to say but leave you the demo link but before I go, I would love to hear your feedback. Hit reply and let me know…

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Improve this statement using ISNULL — Case When c.FirstName IS NULL then ” else c.FirstName End

Any help would be appreciated!

Beginner with SQL and trying to improve this using ISNULL – instead of the longer statement?

Thanks in advance
J

JSP file: window.onload is null

I have a website that was build for IE. I am in the process of making it compatible with Chrome/Chromium. I have multiple pages that have a pop up calendar, which all work in IE, but only on one page in chrome/Edge. On the pages that the pop up calendar does NOT work, window.onload is null and init() never gets called:

window.onload = init;

I gather this means the window isn’t loading, but I don’t know how too see why or what is supposed to load it or where the load is failing.
SEMrush

I haven’t used JS in over 10 years (even then it was very minimal). I’ve been programming in C++ for the last 7 and primarily using VS, so I’m used to having a legit debugger. I’m currently limited to the developer tools in Edge for debugging. (Also, disclaimer, this is my first time ever posting on a help forum, so I don’t know what all to include in the thread)

 

asp.net core – Request origin null does not have permission to access the resource

I’m trying to get CORS working but I’m getting error “Request origin null does not have permission to access the resource.” only when the application is deployed to the server. I have checked the headers and the request does include an “origin” header with the domain of the page that initiated the request, but still I get the above error, as if the header is not being sent as part of the request.

This is the CORS policy I’m using:

      builder.WithOrigins("https://*.mydomain.com")
                    .AllowAnyMethod()
                    .AllowAnyHeader()
                    .AllowCredentials()
                    .SetIsOriginAllowedToAllowWildcardSubdomains();

Everything works locally when using the same configuration. Could it be that a load balancer is removing the header for security? Also I’m using “.AllowCredentials()” on the call to setup CORS in the startup class.