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When to use “ON UPDATE CASCADE”
...regularly but I never use "ON UPDATE CASCADE" as I am not so sure in what situation it will be useful.
7 Answers
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hexadecimal string to byte array in python
...ex String into a byte array so that I can shift each value out and convert it into its proper data type.
8 Answers
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How do I convert from int to Long in Java?
...ence between a cast to long and a cast to Long. If you cast to long (a primitive value) then it should be automatically boxed to a Long (the reference type that wraps it).
You could alternatively use new to create an instance of Long, initializing it with the int value.
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time.sleep — sleeps thread or process?
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It blocks the thread. If you look in Modules/timemodule.c in the Python source, you'll see that in the call to floatsleep(), the substantive part of the sleep operation is wrapped in a Py_BEGIN_ALLOW_THREADS and Py_END_ALLOW...
Error 330 (net::ERR_CONTENT_DECODING_FAILED):
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It happens when your HTTP request's headers claim that the content is gzip encoded, but it isn't.
Turn off gzip encoding setting or make sure the content is in fact encoded.
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Keep only date part when using pandas.to_datetime
...me to parse the dates in my data. Pandas by default represents the dates with datetime64[ns] even though the dates are all daily only.
I wonder whether there is an elegant/clever way to convert the dates to datetime.date or datetime64[D] so that, when I write the data to CSV, the dates are no...
How can I stop redis-server?
... when I try to start a new server by entering redis-server , I'm greeted with the following:
25 Answers
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Is there ever a time where using a database 1:1 relationship makes sense?
I was thinking the other day on normalization, and it occurred to me, I cannot think of a time where there should be a 1:1 relationship in a database.
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Enforcing the type of the indexed members of a Typescript object?
...follow
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edited Oct 24 '19 at 15:39
ZephDavies
1,86711 gold badge88 silver badges1414 bronze badges
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Why does this code segfault on 64-bit architecture but work fine on 32-bit?
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The cast to int* masks the fact that without the proper #include the return type of malloc is assumed to be int. IA-64 happens to have sizeof(int) < sizeof(int*) which makes this problem obvious.
(Note also that because of the undefined behaviour it could st...