Month: November 2022

[Solved] Why learn Ruby on Rails [closed]

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[ad_1] You are mixing some stuff: Ruby on Rails is a framework to create server side web applications using the Ruby language jQuery is a client side JavaScript library that simplifies writing JavaScript web clients Node.js is a server for the execution of server side JavaScript, thus providing a server version of JavaScript PHP is … Read more

[Solved] Storing Char and using it in if-statements

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[ad_1] [*] You could do something like this: #include<stdio.h> int main(void){ int int1, int2, sum=0; char op; printf(“Please enter one of the following Operators [*] [/] [+] [-] “); if((scanf(“%c”,&op)) != 1){ printf(“Error\n”); } printf(“Enter Value Here: “); if((scanf(“%d”, &int1)) != 1){ printf(“Error\n”); } printf(“Enter Value Here: “); if((scanf(“%d”, &int2)) != 1){ printf(“Error\n”); } if … Read more

[Solved] Mysql insert into string value [duplicate]

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[ad_1] If you’re using the deprecated mysql function: $user = “121”; $pass = “dummy1”; $email = “[email protected]”; mysql_query(“INSERT INTO users(username, password, email) VALUES(‘$user’, ‘$pass’, ‘$email’)”); On the other hand, using mysqli: mysqli_query($con, “INSERT INTO users (username, password, email) VALUES (‘$user’, ‘$pass’, ‘$email’)”); Note: where $con is the mysqli connection made variable. 3 [ad_2] solved Mysql … Read more

[Solved] Ruby code doesn’t work [closed]

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[ad_1] I checked your codes and found some problems: num_array.reverse.each_with_index { |value , index| if index % 3 == 0 && num_array[index] != 0 num_string = num_string << ones_place[value-1] elsif index % 3 == 0 && value > 0 && num_array[index] != 0 num_string = num_string << other_place[index/3] << ones_place[value-1] elsif index % 3 == … Read more

[Solved] How can i scan my fingerPrint using phone sensor in Android?

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[ad_1] finger print security api https://developer.android.com/preview/api-overview.html ,its the new api introduced in 6.0 . Biometric Security – In an effort to enhance security, the much needed system-wide biometric fingerprint will be provided by Android Marshmallow. The user can unlock devices with fingerprints and purchase apps on Google Play 1 [ad_2] solved How can i scan … Read more

[Solved] Why does this statement work in Java?

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[ad_1] The second statement is valid: System.out.println((grade/=3) + “%”); Here the (grade/=3) is calculated first and then % is appended. But the System.out.println((“Apples”) System.out.println(“Oranges”)); is invalid statement. For this case compiler generates compilation errors like : error: ‘)’ expected error: illegal start of expression error: ‘;’ expected [ad_2] solved Why does this statement work in … Read more

[Solved] Allocating array in quadriple pointer [closed]

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[ad_1] int ****ptr; ptr = new int***(); *ptr = new int**(); **ptr = new int*(); ***ptr = new int[size_of_arr]; //access (***ptr)[index] delete[] ***ptr; delete **ptr; delete *ptr; delete ptr; 2 [ad_2] solved Allocating array in quadriple pointer [closed]

[Solved] an error i can’t seem to find [closed]

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[ad_1] Problem lies in the order of operations inside while() loop: while (i != 1000) { ++i; num.push_back(i); cout <<num[i]<<“\t”<< sqrt(num[i]) << “\n”; } i starts from 0. In each iteration, you push_back an element and then print it using counter i – after its incrementation. So, num[i] refers to a non-yet-existing element. Change your … Read more

[Solved] Nullpointer Exception in SQL, Listivew

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[ad_1] Your class member model from class InputTab has never initialized. Therefore, you got a NPE at line model.requery();. That’s why you saved your data, but right after that, you got a NPE. You don’t need any Cursor in this class and, of course, you don’t need to requery() anything. 2 [ad_2] solved Nullpointer Exception … Read more