function

[Solved] Embedded function returns None

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monthly_payment_function does not return anything. Replace monthly_payment= with return (that’s ‘return’ followed by a space). Also you have an unconditional return before def monthly_payment_function, meaning it never gets called (strictly speaking, it never even gets defined). Also you are pretty randomly mixing units, and your variable names could use some help: from __future__ import division … Read more

[Solved] how to make a function that validates fields in a form? php [closed]

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Here is a simple implementation – function validateUserName($uname){ $illegalCharacters = array(‘!’,’@’,’#’); // first check the length $length = strlen($uname); if ($length < 5 && $length > 10){ return false; }else{ // now check for illegal characters foreach($illegalCharacters AS $char){ if (strpos($uname,$char) != -1){ return false; } } } return true; } $userName = “user1905577”; if … Read more

[Solved] Calling a function and text box from a button

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You probably don’t want to return an exception from that method. It could use a void return type instead. For example: private void button1_Click(object sender, EventArgs e) { Student student = new Student();//set up student obj… string city = “Foo”; searchCity(student, city); } public void searchCity(Student student, string searchCity) { //Do your search… //set the … Read more

[Solved] Why does this recursion return 0?

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Your base case is return 0. After the line return n * bounce(n – 1) where n is 1, bounce(0) will be executed, returning 0 and multiplying all your previous results by 0. Following the calls, we see: 5>=1, so return 5*bounce(4) 4>=1, so return 5*4*bounce(3) 3>=1, so return 5*4*3*bounce(2) 2>=1, so return 5*4*3*2*bounce(1) 1>=1, … Read more

[Solved] C++ function that returns 0,1 or -1

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Check the number n times whether if it’s even or odd. Create two counters for even and odd and increment counters accordingly. In the end, return -1 for even/odd, 0 for even and 1 for odd. Note – In C, C++ the non-zero value is true while zero is taken as false. int check(int n){ … Read more

[Solved] How to use functions in c++?

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The part you’re missing is the return type of the function, and then to actually return that value from the function. At the moment you have void compute_sum(int limit) // compute_sum function { int sum_to_limit; sum_to_limit = limit * (limit + 1) / 2; } A function prototype in C looks pretty much like this … Read more

[Solved] Creating a function that takes another function as an argument

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generate_data should receive the bound method, not the result of calling the method, as an argument, then call the received argument inside the function: def generate_data(faker_function): return [faker_function() for _ in range(5)] generate_data(Faker().credit_card_number) 4 solved Creating a function that takes another function as an argument

[Solved] What’s wrong with my function? C# [closed]

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The first error can help you search for “C# methods”, which will lead you to this: Methods are declared in a class or struct by specifying the access level such as public or private, optional modifiers such as abstract or sealed, the return value, the name of the method, and any method parameters. These parts … Read more

[Solved] Javascript function executed in this pattern “xyz()()” throws error?

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It would only work if recursiveSum would return a function. Right now, you try to execute the return value of recursiveSum(1) as a function. It isn’t (it’s undefined), and thus an error is thrown; you try to execute undefined(2)(3). You could do something like this. function currySum(x) { return function(y) { return function(z) { return … Read more

[Solved] how to apply a function on a data set?

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I’m at least not quite sure whether I understood correct. Maybe a better question could improve the answers… DF <- data.frame(Tree = c(4382, 4383, 4384, 5385, 4386), a = c(21.88, 13.93, 19.69, 20.02, 11.07), b = c(9.59, 12.95, 9.78, 8.23, 23.20), k = c(0.0538, 0.0811, 0.0597, 0.0489, 0.1276)) DOY <- c(1:365) DF_new <- data.frame(sapply(1:length(DF$Tree), function(x)(DF$a[x]*exp(-exp(DF$b[x]-DF$k[x]*DOY))))) … Read more