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Does SQLAlchemy have an equivalent of Django's get_or_create?
...ject from the database if it already exists (based on provided parameters) or create it if it does not.
9 Answers
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403 Forbidden vs 401 Unauthorized HTTP responses
For a web page that exists, but for which a user does not have sufficient privileges (they are not logged in or do not belong to the proper user group), what is the proper HTTP response to serve?
...
PHP parse/syntax errors; and how to solve them
Everyone runs into syntax errors. Even experienced programmers make typos. For newcomers, it's just part of the learning process. However, it's often easy to interpret error messages such as:
...
What is a stream?
What is a stream in the programming world? Why do we need it?
6 Answers
6
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How to know user has clicked “X” or the “Close” button?
... CloseReason.UserClosing to know that the user had decided to close the form
but I guess it is the same for both clicking the X button or clicking the close button.
So how can I differentiate between these two in my code?
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How to check if a variable is null or empty string or all whitespace in JavaScript?
I need to check to see if a variable is null or has all empty spaces or is just blank ("").
12 Answers
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How to delete a file or folder?
How do I delete a file or folder in Python?
13 Answers
13
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How to check if array is empty or does not exist? [duplicate]
What's the best way to check if an array is empty or does not exist?
1 Answer
1
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Difference between
...r because any of the lists that could be assigned to foo3 contain a Number or a subclass of Number.
You can't read an Integer because foo3 could be pointing at a List<Double>.
You can't read a Double because foo3 could be pointing at a List<Integer>.
Writing - Given the above possible a...
How to convert Nonetype to int or string?
...onditions under which it gives None and determine a sensible value to use for that, with the usual conditional code:
result = could_return_none(x)
if result is None:
result = DEFAULT_VALUE
...or even...
if x == THING_THAT_RESULTS_IN_NONE:
result = DEFAULT_VALUE
else:
result = could_...