I’m currently studying Computer Science and we started working with Pointers. I had the feeling that I started to understand pointers but I ran into a problem and can’t figure out what went wrong. We defined a Tree like this: typedef struct node *tree; struct node {int key; tree left, right;}; Now we should write… Read More Why does my Recursion using Pointer in C crash?
Its a simple app that is supposed to choose random line from a text file. I tried installing android 8.0 because last error I ever got was that I require level 26 or higher. I am new to android studio and I don’t understand the crash log package com.example.exampleapp import android.os.Build import androidx.appcompat.app.AppCompatActivity import android.os.Bundle… Read More I am making app in kotlin but it keeps crashing, yet before launching it doesnt show errors
So I understand the basics of java programming but when I’m trying to use my little knowledge in android studio it make everything harder having classes and different files needing to be referenced. Coming from python, when making a simple game I would define different functions, then run them in a game loop like while… Read More Can't get a game loop to work in Android Studio
How to fix crash issue on a recycler view due to JsonSyntaxException? com.google.gson.JsonSyntaxException: java.lang.NumberFormatException:Expected an int but was 0.5 at line 1 column 39043 path $.items[10].weight >Solution : Solution: Step-1: Please try to crosscheck your json with your model class Step-2: If any data type mismatch found, fix it. Say for an example, if you… Read More How to fix crash issue on a recycler view due to JsonSyntaxException?
My log cat : 2022-07-29 21:42:03.128 24303-24303/com.example.newcadviewerapp E/AndroidRuntime: FATAL EXCEPTION: main Process: com.example.newcadviewerapp, PID: 24303 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.newcadviewerapp/com.example.newcadviewerapp.ShareMedia}: java.lang.ClassCastException: androidx.appcompat.widget.AppCompatImageView cannot be cast to android.widget.Button at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3729) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3896) at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85) at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:140) at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:100) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2326) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loop(Looper.java:263) at android.app.ActivityThread.main(ActivityThread.java:8296) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:612) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1006) Caused by:… Read More My app crashes when i try to move to a particular layout
import time import paramiko import sys from getpass import getpass #First Unifi AP IP Address firstip=3 fistdigits = ‘10.0.0.’ #how can we prevent from crashing if 10.0.0.19 is not an available device while firstip<=100: host= f'{fistdigits}{firstip}’ #first one will be 10.0.0.3 then 10.0.0.4 etc username="username" password="password" session= paramiko.SSHClient() session.set_missing_host_key_policy(paramiko.AutoAddPolicy()) session.connect(hostname=host, username=username, password=password) #upgradeurl="https://dl.ui.com/unifi/firmware/U7PG2/4.3.13.11253/BZ.qca956x.v4.3.13.11253.200430.1420.bin" #stdin, stdout,… Read More continue loop even if one host is not available
I used row pointers to implement the binary search tree data structure and it worked perfectly, but when I replaced the row pointers with shared_ptr it compiles successfully but the program crashes due to unknown run-time error. Could you please help in this? #include<iostream> #include<memory> class node{ public: int data; std::shared_ptr<node>left = std::make_shared<node>(); std::shared_ptr<node>right =… Read More binary search tree by smart pointers
I have the following code to create a connection to my MongoDB database, and to store it for future use. const mongodb = require(‘mongodb’); const MongoClient = mongodb.MongoClient; // The database will be defined once a connection to between the cluster and mongodb is created let _database; const uri = ”; const databaseName = ‘db’;… Read More How to Wait Until a MongoDB Connection is Made before Using the Database
Hello let’s be quick to the problem. So there’s this login program I wrote: void login(){ int i, j, a=0, idCheck, passCheck; char userid[20], password[10], ch, rd; USERDATA userArr[20]; //preparing .txt file to read char *userData = "user.txt"; FILE *fp = fopen(userData, "r"); if(fp == NULL){ printf("\n\n\n\t\t\t\t\tError: Couldn’t open file %s\n\n\n\n\n\n\n", userData); printf("\n\n\n\t\t\t\t\tPress enter to… Read More Program crash in checking userID Parameter in C
Recently, I wrote the following, buggy, c code: #include <stdio.h> struct IpAddr { unsigned char a, b, c, d; }; struct IpAddr ipv4_from_str (const char * str) { struct IpAddr res = {0}; sscanf(str, "%d.%d.%d.%d", &res.a, &res.b, &res.c, &res.d); return res; } int main (int argc, char ** argv) { struct IpAddr ip = ipv4_from_str("192.168.1.1");… Read More What causes this bug to be non-deterministic