heathrow | capturing flight arrival/departure information

No, it's not a good use of eval. The only advantage that eval has in this context is to make your code more difficult to understand.

You apparently want to send the name of an attribute to the constructor of AirportSelectWindow, but your code would be easier to understand if you just pass in the actual variable.

You can query your collection for matching iata codes and do a diff between the result and your array of iata codes:

Given a collection airports with the following documents:

Dependencies

One way to achieve this is to select all the distinct city/date combinations in a subquery and then count the occurrence of each city:

There are two approaches you may consider.

1. Write a custom TraversalStrategy
2. Develop a Gremlin DSL

For a TraversalStrategy you would develop one similar to SubgraphStrategy or PartitionStrategy which would take your user permissions on construction and then automatically inject the necessary has() steps after out() / in() sorts of steps. The drawback here is that your TraversalStrategy must be written in a JVM language and if using Gremlin Server must be installed on the server. If you intend to configure this TraversalStrategy from the client-side in any way you would need to build custom serializers to make that possible.

For a DSL you would create new navigational steps for out() / in() sorts of steps and they would insert the appropriate combination of navigation step and has() step. The DSL approach is nice because you could write it in any programming language and it would work, but it doesn't allow server-side configuration and you must always ensure clients use the DSL when querying the graph.

We are stamping user permission as a property (of SET cardinality) on each nodes and edges.

As a final note, by "SET cardinality" I assume that you mean multi-properties. Edges don't allow for those so you would only be able to stamp such a property on vertices.

First you have to add necessary namespaces:

Returning values inside the then block return a promise. So, you need to add a then block with your function call which is not needed here. I think that will just make it more complex.

You can simply log the data inside the function and write your code inside the then block only.

Based on the ValueError: unmatched lengths that appears on your stack trace seems that you are trying to set something with a value that exceeds its capability (ie: 20 values array inside 18 values array).

Also you have an FileNotFoundError: [Errno 2] No such file or directory: 'rh/15_min_Praxis_LHR2_meteo_020p0_030p0.csv', so you should check that 15_min_Praxis_LHR2_meteo_020p0_030p0.csv exists or that you have enough permmisions to access it.

Without some example code this is all I can help you :c

Hope this is useful for you!

Use recursive method to find the path and update the value.