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Understanding FFT output
...sqrt (real * real + imag * imag). This number will always be positive. Now all you have to search is for the maximum value (ignore the first entry in your array. That is your DC offset and carries no frequency dependent information).
You get 32 real and 32 imaginary outputs because you are using a ...
SQLite UPSERT / UPDATE OR INSERT
...answer. Starting from SQLIte 3.24.0, released on June 4, 2018, there is finally a support for UPSERT clause following PostgreSQL syntax.
INSERT INTO players (user_name, age)
VALUES('steven', 32)
ON CONFLICT(user_name)
DO UPDATE SET age=excluded.age;
Note: For those having to use a vers...
Could not load file or assembly … An attempt was made to load a program with an incorrect format (Sy
...platform target" in configuration manager doesn't appear to do anything at all!)
– BlueRaja - Danny Pflughoeft
Aug 3 '12 at 22:07
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Explain the use of a bit vector for determining if all characters are unique
...ge for bits. Every bit in integer value can be treated as a flag, so eventually int is an array of bits (flag). Each bit in your code states whether the character with bit's index was found in string or not. You could use bit vector for the same reason instead of int. There are two differences betwe...
How to extract numbers from a string in Python?
I would extract all the numbers contained in a string. Which is the better suited for the purpose, regular expressions or the isdigit() method?
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Applying a git post-commit hook to all current and future repos
...hook and it works correctly. However, I want to add this hook to apply to all current (and future) git repositories I am working on. I tried adding the hook to my ~/.git/hooks/ instead of in the hooks directory in the project directory, however, this did not seem to work.
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How to enter in a Docker container already running with a new TTY
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With docker 1.3, there is a new command docker exec. This allows you to enter a running container:
docker exec -it [container-id] bash
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How does a garbage collector avoid an infinite loop here?
...wo seconds, the CLR just kills the process - no more Finalize methods are called. Also, if it takes more then 40 seconds to call all objects' Finalize methods, again, the CLR just kills the process.
Also, as Servy mentions, it has its own thread.
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How do I get the backtrace for all the threads in GDB?
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Generally, the backtrace is used to get the stack of the current thread, but if there is a necessity to get the stack trace of all the threads, use the following command.
thread apply all bt
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MySQL remove all whitespaces from the entire column
Is there a way to remove all whitespaces from a specific column for all values?
5 Answers
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