paradise | (No longer actively maintained)

The BY statement is used with many SAS procedures and it is critical to include it in a PROC SORT step as that is how you tell PROC SORT which variables to sort by.

I think perhaps you wanted to sort the data so the cities with the largest population values appear first. The DESCENDING keyword is placed before the variable that it applies to.

From an OOP perspective you would keep the two properties (name and population of a neighborhood) together in one object. Then when you sort the objects, you'll still have the associated data right there.

There are several ways to do this. For instance, you could create tuples.

Here is how that is applied to your code:

As @epascarello noted, the issue is that the array contained empty elements like: 'Arkaroola Village SA 5701', , 'Arkell NSW 2795', ' – Codepen corrected and working. Thanks!

I would use Lists of objects to define your data structure. And then LINQ to query, manipulate, etc. I think it will be more flexible and give you closer to what you want. Something like this:

https://pynative.com/python-file-seek/

When reading files in most programming languages, the file object maintains a 'cursor' (also called 'pointer') to keep track of the portions of the file that have already been read and where to start reading on subsequent read requests. This cursor starts at the first byte of a file and advances forward until it reaches the end of the file.

For example, when you read a file line-by-line, the file object starts at the current location of the cursor, reads the line, then advances the cursor to the end of the line it just read. It knows to stop reading when the cursor reaches the end of the file.

So on your initial call to f.read(), you are reading the entire file, so the cursor gets placed at the end of the file. On the subsequent call to enumerate (f,0), since the cursor is at the end of the file, there is nothing left to read in the file so the loop is effectively skipped.

When you comment out f.read(), since you have not yet read the file before enumerate (f,0), the file cursor remains at the beginning of the file, so that's why the loop works when you comment out f.read()

If you need to keep file_source = f.read() (file_source looks to be unused, so I'm not sure of its purpose) then you need to reset the file cursor to the beginning of the file before the next read. You can do this with f.seek(0) which will place the cursor back at the 0th byte in the file.

Alternatively, since the entire contents of the file is now in file_source, you no longer need to read from the file directly.

This shows storing the track and the rating together in a tuple, and how to iterate through the tuples you collect:

I am not sure what you mean by "pre-transformation" and esp. by this:

more pre-transformations could be chained afterwards

AFAICT, you could do:

XSLT 1.0

Just split by regex, that will give you some empty elements.. you can filter empty elements afterwards.

I am not sure about what you want to do exactly.

Let say your have a JSON data file accessible by a simple GET request (as it seems to be) and want to convert it into an XML file using PHP.

First, you can convert your json to array with json_decode. Then, you can SimpleXML extension to generate an XML output.

As an example: