JavaScript in 30 words
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JavaScript Arrow Functions Explained Simply

A concise syntax for creating functions. If we have only one argument, then parentheses around parameters can be omitted. Arrow functions do not have a 'this' context.

const learner = {
  name: "Ada",
  topics: ["scope", "closures"],
  summaries() {
    return this.topics.map(topic => this.name + ": " + topic);
  }
};

console.log(learner.summaries().join(" | "));

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