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REPL

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Theory

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REPL

REPL is simple if you keep it on paper. Sara uses it for REPL on Sara's board in a first job task.

Do REPL once by hand. one REPL step Sara can write from memory. Change one input. Say the new result out loud.

REPL exists so Sara can keep REPL on Sara's board correct in a first job task.

Sara ships REPL in a first job task. That is the use case worth saying.

If REPL on Sara's board breaks under REPL, check only reciting the name of REPL first.

REPL is not a lonely heading. Sara ties it to REPL on Sara's board.

One breath for REPL, then REPL on Sara's board, then only reciting the name of REPL. Sit down.

Exam tip

Say REPL in one breath, then one REPL step Sara can write from memory, then only reciting the name of REPL.

Example

// REPL
const users = [
  { id: 1, name: "Asha" },
  { id: 2, name: "Ravi" },
];

function findUser(id) {
  return users.find((u) => u.id === id) ?? null;
}

console.log(findUser(2));
console.log(users.map((u) => u.name));

REPL: find user 2, then list names. Say both prints.

Short notes

DefREPL — Sara uses it for REPL on Sara's board in a first job task.
RuleREPL → one REPL step Sara can write from memory.
RememberREPL + npm (a first job task).
UseREPL in a first job task (REPL on Sara's board).
TrapREPL — only reciting the name of REPL.
ExREPL → REPL on Sara's board.

// REPL const users = [ { id: 1, name: "Asha" }, { id: 2, name: "Ravi" }, ]; function findUser(id) { return users.find((u) => u.id === id) ?? null; } console.log(findUser(2)); console.log(users.map((u) => u.name));

REPL

Example

Short notes

Questions

REPL

Example

Short notes

Questions