Month: February 2023

[Solved] How do I make my App Open Only Once and the next time I open the app it will crash?

by

I think SharedPreferences is the better idea and the data is more secure than a file. Simply copy paste this to your onCreate(). SharedPreferences sharedPref = getActivity().getPreferences(Context.MODE_PRIVATE); Boolean expired= sharedPref.getBoolean(“expired”, false); if (expired){ throw new RuntimeException(“Custom crash”); } //Make it expierd SharedPreferences pref=PreferenceManager.getDefaultSharedPreferences(this); SharedPreferences.Editor editor = pref.edit(); editor.putBoolean(“expired”, true); editor.commit(); 1 solved How do I … Read more

[Solved] Merge multiple list of dict with same value in common key [closed]

by

If you want a more pythonic way: from itertools import groupby from pprint import pprint from collections import ChainMap a = [{‘a’:0,’b’:23}, {‘a’:3,’b’:77}, {‘a’:1,’b’:99}] b = [{‘a’:1,’c’:666}, {‘a’:4,’c’:546}] c = [{‘d’:33,’a’:3}, {‘d’:1111,’a’:4}, {‘d’:76,’a’:1}, {‘d’:775,’a’:0}] d = [{‘a’:2,’e’:12}, {‘a’:4,’e’:76}] dict_list = a + b + c + d # You just need to specify the key … Read more

[Solved] Redefine this C++ variable [closed]

by

You cannot redefine variable, that’s simply not possible in C++. Good news is, you don’t need to. As the name “variable” suggests, you can change it: #include <iostream> using namespace std; int main() { string b1 = “undefined”; cout << “Schedule\n”; string p1; cin >> p1; if (p1 == “1”) { b1 = “ELA”; //don’t … Read more

[Solved] base64 encoded column want to decode using a xampp server what [closed]

by

If you’re using MySQL 5.6.1 or higher you can use the FROM_BASE64() function. You can write your query inside file like : $query = mysqli_query($connection,”SELECT testid, setno, qnid, FROM_BASE64(question) as question FROM `table_name`”); SQL Query SELECT testid, setno, qnid, FROM_BASE64(question) as question FROM `table_name` Hope it will help you. 0 solved base64 encoded column want … Read more

[Solved] Underscore not visible in Java numbers [closed]

by

If you expect that int intUnderscore = 1_23_456; System.out.println(“intUnderscore: ” + intUnderscore); prints intUnderscore: 1_23_456 you misunderstod the purpose of the underscore. It is just syntactic sugare meant to make source code easier to read. solved Underscore not visible in Java numbers [closed]

[Solved] What is ‘nul’ in batch file?

by

Nul exists as a file in EVERY directory. It swallows anything sent to it. Reserved names. These refer to devices eg, copy filename con which copies a file to the console window. CON, PRN, AUX, NUL, COM1, COM2, COM3, COM4, COM5, COM6, COM7, COM8, COM9, LPT1, LPT2, LPT3, LPT4, LPT5, LPT6, LPT7, LPT8, and LPT9 … Read more

[Solved] Access Data Variable from one class in another class

by

In SecondViewController.h @property (nonatomic, copy) NSString *textblah; In FirstViewController.m #import “SecondViewController.h” // where you want to store value SecondCiewController *secondViewController = [[SecondViewController alloc] init]; secondViewController.textblah = stringToStore; // and [self.navigationController push:secondViewController animated:YES]; // You can log the set value with to check whether it was successful or not. NSLog(@”textblah: %@”, textblah); For complete understanding of … Read more

[Solved] Winsock programming connecting to a public ip

by

The issue is with your server. You are binding it to 127.0.0.1. This means your server will only bind to the loopback interface, so only clients running on the same machine as the server will be able to connect to the server using this same interface. If you want your server to accept clients from … Read more