Traversing nested data-structures in various languages

• nested-data-structure-traversal

  15 567 8.8 Elixir

Just wanting to say that all Javascript solutions are quite 'bad', except the simple for-of, because they're combining pure array methods (.map, .reduce) and side-effects (external variable to that method), not even talking about this https://github.com/josevalim/nested-data-structure-traversal...

• virt-v2v

  4 69 8.7 OCaml

  Virt-v2v converts guests from foreign hypervisors to run on KVM

  

XPath is the real killer feature for XML. I don't think it's possible to use it in this particular example, but in the more generally useful cases where you want to pull (eg) all subnodes with key matching a particular string, XPath is great.

Here's it being used in real code (search for "xpath_"):

https://github.com/libguestfs/virt-v2v/blob/master/v2v/parse...

https://github.com/libguestfs/virt-v2v/blob/master/v2v/parse...

• InfluxDB

  www.influxdata.com featured

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• specter

  18 2,479 0.0 Clojure

  Clojure(Script)'s missing piece

  

Clojure also has some third party libraries like Specter [1] that make nested traversal and mutation very succinct and performant.

The author of Specter goes so far as to label traversal/update of deep immutable structures as "Clojure's Missing Piece".

[1] https://github.com/redplanetlabs/specter

• JsonPath

  10 8,634 6.4 Java

  Java JsonPath implementation

  

JSONPath confers pretty much the same concept onto JSON too with much the same syntax. There are JPath implementations for most languages now.

> https://github.com/json-path/JsonPath

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