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Difference between a theta join, equijoin and natural join
I'm having trouble understanding relational algebra when it com>me m>s to theta joins, equijoins and natural joins. Could som>me m>one please help m>me m> better understand it? If I use the = sign on a theta join is it exactly the sam>me m> as just using a natural join?
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What is the purpose of python's inner classes?
Python's inner/nested classes confuse m>me m>. Is there som>me m>thing that can't be accomplished without them? If so, what is that thing?
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AngularJS- Login and Authentication in each route and controller
... down in 3 parts: the state of the user is stored in a service, in the run m>me m>thod you watch when the route changes and you check if the user is allowed to access the requested page, in your main controller you watch if the state of the user change.
app.run(['$rootScope', '$location', 'Auth', functi...
Add shadow to custom shape on Android
... a drop shadow to a custom shape in Android? After looking through the docum>me m>ntation, I only see a way to apply a text shadow.
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What is the best place for storing uploaded images, SQL database or disk file system? [closed]
...stion, how to resize the images on the server side before storing. Maybe som>me m>one can please drop a .NET resource for that in the comm>me m>nt or so).
I wonder now what the best place for storing uploaded images is.
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Why is there no SortedList in Java?
...edSet and SortedMap interfaces. Both belong to the Java Collections fram>me m>work and provide a sorted way to access the elem>me m>nts.
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How do I update a GitHub forked repository?
...d the original GitHub repository as a "remote". ("Remotes" are like nicknam>me m>s for the URLs of repositories - origin is one, for example.) Then you can fetch all the branches from that upstream repository, and rebase your work to continue working on the upstream version. In terms of commands that ...
ES6 class variable alternatives
Currently in ES5 many of us are using the following pattern in fram>me m>works to create classes and class variables, which is comfy:
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Is the != check thread safe?
...changed in between by another thread comparison may produce false.
Also, m>me m>mory visibility problem is relevant here, there is no guarantee that changes to a made by another thread will be visible to the current thread.
sha...
Importing from builtin library when module with sam>me m> nam>me m> exists
...e accepted solution contains a now-deprecated approach.
The importlib docum>me m>ntation here gives a good example of the more appropriate way to load a module directly from a file path for python >= 3.5:
import importlib.util
import sys
# For illustrative purposes.
import tokenize
file_path = toke...