Welcome to BHS Computer Science. If you are a student in the class, the first thing you need to do (and which we should have done in class) is set up your GitHub account.
Once you have a GitHub account, click “Log in to GitHub” below to proceed. Or you can click “Use anonymously” to play with the environment but you will not be able to save your work or submit assignments. (You can always log in later by clicking the at the top of the page.)
If you don’t have a GitHub account yet, please create one and then log in here for further instructions.
Congratulations! You have successfully connected this app to GitHub. However you are not yet a member of the GitHub organization for this class, something Mr. Seibel needs to set up for you.
This is your GitHub profile URL:
Click the clipboard icon to copy it and then submit it at this form so he can add you.
Congratulations! You have successfully connected this app to GitHub. And it looks like you have an invitation to join the GitHub organization for this class. You need to accept that invitation before you can proceed. The invite should be sent to whatever email you used when you created your GitHub account.
I see you are logged into GitHub and a member of the berkeley-high-cs GitHub organization. However there seems to have been some problem finishing the setup for your account. Please let Mr. Seibel know.
This is a tool for the BHS Computer Science class at Berkeley High School. It is intended to provide a simple environment for experimenting with Javascript without all the complexities of a full development environment such as ReplIt or Glitch which we may use later in the year.
It is also designed to take advantage of the browser’s ability to run Javascript natively. It does not need access to a server to run code making in extremely responsive even if the Wifi is flaking out.
Finally, under the covers it is saving work to a GitHub repository in a very simplified workflow that does not depend on immediately learning any git commands. Code written in this environment for each assignment is saved to a directory and branch specific to that assignment each time it is saved. Thus when the assignment is done, it is easy to go to GitHub and create a PR containing just the work on that assignment which can then be commented on and worked on further before it is turned in and merged to main.
You're all set! You don't need to worry about this yet but we have successfully created a GitHub repository for your work:
You can get to it any time by clicking on your GitHub username at the top-right of the screen.
A function that takes a predicate function and an array and returns a new array containing only those elements of the array argument for which the predicate returns true.
A function that takes a one-argument function and an array and returns a new array containing for each element in the array argument the value returned by fn when called with that element.
A function that takes a two-argument function, an initial value, and an array and returns the value produced by repeatedly calling the function, the first time the initialValue and the first element of the array, and subsequently with the the value returned by the previous call to the function and the next element of the array. If the array is empty it should just return the initial value.
A function that takes a one-argument function that returns an array and an array and returns a new array containing all the elements returned by the function when called with each element of the argument array flattened into a single array.
A function that takes a predicate function and an array and returns true if, and only if, the predicate return true for every element of the array.
A function that takes a predicate function and an array and returns true if, and only if, the predicate return true for some element of the array.
The goal of this exercise is to write functions in the editor to the left that pass test cases for the functions shown below. Whenever you are ready to run the tests, hit the button above the editor. To see the specification for a function you are supposed to write, click a button in the test panel. Once you have written the function with the right name, the button will indicate whether the test cases are all passing (green, with a ✅) or some are failing (red, with an ❌) and clicking the button will show the results of the individual test cases.