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How can I filter a Django query with a list of values?
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+1 for a small explanation. While I know I can read the docs, that doesn't necessarily mean I understood the docs.
– Austin A
Feb 26 '15 at 2:00
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What is the difference between syntax and semantics in programming languages?
...efore must be evaluated at run-time. In the ++ operator example, if x is already at the maximum value for its data type, what happens when you try to add 1 to it? Another example: what happens if your program attempts to dereference a pointer whose value is NULL?
In summary, syntax is the concept t...
Should I store generated code in source control
...ce. So in effect you have to commit the generated code only when you're already commiting the change to the source of the generated code.
– JaredPar
May 21 '09 at 17:50
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Why is “copy and paste” of code dangerous? [closed]
... application needs updating, you only do it in one place).
Have your boss read about the DRY principle (Don't Repeat Yourself).
What you are describing sounds like the perfect use for libraries, where you share code and only keep it in one place.
I would only ever copy-paste code if I intended to...
How to get the last element of a slice?
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For just reading the last element of a slice:
sl[len(sl)-1]
For removing it:
sl = sl[:len(sl)-1]
See this page about slice tricks
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Mark parameters as NOT nullable in C#/.NET?
... (null == arg)" instead of "if (arg == null)"? I find the latter easier to read, and the problem the former solves in C doesn't apply to C#.
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What is the pythonic way to avoid default parameters that are empty lists?
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Existing answers have already provided the direct solutions as asked for. However, since this is a very common pitfall for new Python programmers, it worth to add the explanation why python behaves this way, which is nicely summarized in "the Hitchh...
How do I limit the number of rows returned by an Oracle query after ordering?
...the job better with more options. You can find the full syntax here. (Also read more on how this works internally in Oracle in this answer).
To answer the original question, here's the query:
SELECT *
FROM sometable
ORDER BY name
OFFSET 20 ROWS FETCH NEXT 10 ROWS ONLY;
(For earlier Oracle versio...
How does akka compare to Erlang? [closed]
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Nearly nobody mentions process isolation. Without guarantees of "your thread cannot mess with my junk", distributed systems are much more difficult to reason about. (They're already difficult enough with Erlang's processes.)
AFAIK (which isn't far, given my limited direct experience with the JV...
How to schedule a function to run every hour on Flask?
...ested by user5547025 is for synchronous tasks which can block the master thread. You will need to spin up a worker thread for it not to block.
– Simon
Feb 11 '18 at 10:54
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