How to use the concat function from highland

Find comprehensive JavaScript highland.concat code examples handpicked from public code repositorys.

highland.concat is a method in the Highland.js library that concatenates multiple streams into a single stream.

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function getLogItemInRange (segments, start, end) {
  var streams = segments
      .reverse()
      .map(function (seg) { return fs.createReadStream(findLog(seg.file)) })
  if (streams.length > 1) {
    streams = hl.concat.apply(this, streams)
  } else {
    streams = hl(streams[0])
  }
  return streams.pipe(
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How does highland.concat work?

highland.concat is a method in the Highland.js library that concatenates multiple streams into a single stream. When you call highland.concat, you pass in one or more Highland streams that you want to concatenate. The method then returns a new Highland stream that emits all of the values from the first stream, followed by all of the values from the second stream, and so on, until all of the input streams have been exhausted. By default, highland.concat will wait for each input stream to complete before moving on to the next stream. This ensures that all of the values from each stream are emitted in the correct order. highland.concat can be useful in a variety of scenarios, such as when you need to combine multiple data sources into a single stream or when you need to break up a large stream into smaller, more manageable chunks. Note that Highland.js is a library that provides a powerful and flexible set of tools for working with streams of data in JavaScript. By using Highland.js, you can simplify your code and make it more expressive and modular, while taking advantage of the power and flexibility of streams.

Ai Example

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const _ = require("highland");

// Define three Highland streams
const stream1 = _([1, 2, 3]);
const stream2 = _([4, 5, 6]);
const stream3 = _([7, 8, 9]);

// Concatenate the streams using `_.concat`
const concatenated = _.concat(stream1, stream2, stream3);

// Log each value emitted by the concatenated stream
concatenated.each(console.log);

In this example, we start by requiring the highland library and defining three Highland streams called stream1, stream2, and stream3. Each stream emits a series of numbers. We then use _.concat to concatenate the three streams into a single stream called concatenated. Finally, we use the each method on concatenated to log each value emitted by the stream to the console. When we run this code, we'll see the following output: Copy code