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Dynamically set local variable [duplicate]
How do you dynamically set local variable in Python (where the variable name is dynamic)?
7 Answers
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How do I perform the SQL Join equivalent in MongoDB?
...rect. The new $lookup operator added to the aggregation pipeline is essentially identical to a left outer join:
https://docs.mongodb.org/master/reference/operator/aggregation/lookup/#pipe._S_lookup
From the docs:
{
$lookup:
{
from: <collection to join>,
localField: <...
Convert InputStream to BufferedReader
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How to get complete address from latitude and longitude?
...ddress from Lat-Long (Geo-coordinates). You can simply hit google-maps web service passing the Latitude and longitude. It is simply a GET-Method web-service.
It will return the JSON Response that can be parsed easily to get address. The URL for this is:
http://maps.googleapis.com/maps/api/geocode/...
Why does ReSharper tell me “implicitly captured closure”?
... use.
The compiler generates a class for both lambda expressions and puts all variables in that class which are used in the lambda expressions.
So in my example g and i are held in the same class for execution of my delegates. If g is a heavy object with a lot of resources left behind, the garbage...
Python read-only property
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Generally, Python programs should be written with the assumption that all users are consenting adults, and thus are responsible for using things correctly themselves. However, in the rare instance where it just does not make sens...
Importing from builtin library when module with same name exists
Situation:
- There is a module in my project_folder called calendar
- I would like to use the built-in Calendar class from the Python libraries
- When I use from calendar import Calendar it complains because it's trying to load from my module.
...
How do JavaScript closures work?
...clared outside the function, regardless of when and where the function is called.
If a function was called by a function, which in turn was called by another function, then a chain of references to outer lexical environments is created. This chain is called the scope chain.
In the following code, in...
What's the difference between IQueryable and IEnumerable
...ns, but IQueryable allows for a remote data source, like a database or web service"
Source: here
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Collections.emptyMap() vs new HashMap()
...se case is when you need to provide an argument as an input to a method or service. Unless you expect the input collection to be modified by the service or method (which is usually a really bad design idea), passing in an immutable collection instead of the mutable one might be the reasonable and sa...