Pyspark - explode the nested data

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Pyspark can explode the nested structure in object

import pyspark.sql.functions as fn

df = df_raw \
  .select('date', 'value', fn.explode(df_raw.groups).alias('group'))

Java - JFR create a new configuration from existing one

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Creating a new custom(custom.jfc) JFR configuration from the existing profile.jfc

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Nice example how Javascript can have a unit test with fetch call by mocking.

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Signal will be standard in JavaScript?

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LangChain JS example with Llama cpp for embeddings and prompt.