How to use the filter function from highland

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

highland.filter is a higher-order function that returns a new Highland stream containing only the values that pass a provided predicate function.

coreTransforms.js

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  constructor(fn) {
    this._fn = fn;
  }

  apply() {
    return h.filter(this._fn);
  }
};

class Otherwise {

+ 13 other calls in file

index.js

GitHub: ak--47/mixpanel-import

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// @ts-ignore
const mpPipeline = _.pipeline(
        // * only actual data points
        // @ts-ignore
        _.filter((data) => {
                config.recordsProcessed++;
                if (data && JSON.stringify(data) !== '{}') {
                        return true;
                }

+ 3 other calls in file

How does highland.filter work?

highland.filter is a higher-order function that creates a new Highland.js stream consisting of only the elements from the original stream that satisfy a given predicate function. The predicate function is applied to each element of the stream, and the elements that pass the predicate test are included in the new stream.

index.js

GitHub: poga/rats

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      streams = hl(streams[0])
    }
    return streams.pipe(
      hl.pipeline(
        ndjson.parse(),
        hl.filter(function (data) { return data.timestamp >= start && (!end || data.timestamp < end) })
      ))
  }
}

Ai Example

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const _ = require("highland");

const numbers = _([1, 2, 3, 4, 5]);

const filteredNumbers = numbers.filter((num) => num % 2 === 0);

filteredNumbers.each((num) => {
  console.log(num);
});

// Output: 2, 4

In this example, we create a highland stream of numbers, filter out the odd ones using highland.filter, and then print the resulting stream to the console. The filter function takes a predicate function that determines whether each item in the stream should be included or excluded.

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