yql | yet another query language for rule engine in golang | Rule Engine library

From the documentation link that you provided in the comments I see that the databse that you use does not support a statement equivalent to INSERT OR IGNORE... to suppress errors if a unique constraint is violated.

As an alternative you can use INSERT ... SELECT.

If your database supports EXISTS:

Yes, the stub returned by Execution.Context.createContextStub() is just for testing and doesn't provide all the information that is needed. Instead:

1. Get a com.yahoo.search.searchchain.ExecutionFactory injected in your component (by declaring it as a parameter in the constructor).

2. To get an execution, call executionFactory.newExecution(chain)

Use OAuth2Swift function

See https://docs.vespa.ai/documentation/linguistics.html - this is most likely a feature of normalization

It is useful to add &tracelevel=5 to the query (some number, in/decrease as needed) to see the effect of query processing

most often, leaving default processing on is what you want (i.e. lowercase). It is possible to exclude searchers in the query processing chain, though, easier to discuss once you have the processing trace

https://docs.vespa.ai/documentation/text-matching-ranking.html#match-configuration-debug is useful, and see vespa-index-inspect / vespa-attribute-inspect in the same document for how to see how the terms are indexed

So reading the documentation it doesn't seem possible to send a batch of locations to the Yahoo Weather API. But what you can do is .map() over an array of locations and make multiple requests.

https://developer.yahoo.com/weather/documentation.html#params

Since OAuth 1.0 is a callback, I've wrapped that with a new Promise(), which will give us an array of unfulfilled promises. Then finally, Promise.all() method returns a single Promise that fulfills when all of the promises passed as an iterable have been fulfilled.

The PNG format has a fixed header that consists of the 8 bytes 89 50 4e 47 0d 0a 1a 0a which, when converted to base64, look like this:

iVBORw0KGgo=

As you can see, it ends with a padding character "=", which will not be there in a real base64 representation of an image, and instead of "o" there could be a different character depending on the bytes after the header.

So you can easily recognize a base64 encoded PNG by comparing the first characters of the base64 string with

iVBORw0KGg

This principle works for all file formats that have a fixed header.