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How to open, read, and write from serial port in C?

I am a little bit confused about reading and writing to a serial port. I have a USB device in Linux that uses the FTDI USB serial device converter driver. When I plug it in, it creates: /dev/ttyUSB1. ...
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How to use wait and notify in Java without IllegalMonitorStateException?

I have 2 matrices and I need to multiply them and then print the results of each cell. As soon as one cell is ready I need to print it, but for example I need to print the [0][0] cell before cell [2][0] even if the result of [2][0] is ready first. So I need to print it by order. So my idea is to mak...
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Javascript equivalent of Python's zip function

Is there a javascript equivalent of Python's zip function? That is, given multiple arrays of equal lengths create an array of pairs. ...
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Convert string to binary in python

I am in need of a way to get the binary representation of a string in python. e.g. 8 Answers ...
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Get top n records for each group of grouped results

The following is the simplest possible example, though any solution should be able to scale to however many n top results are needed: ...
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How to filter a dictionary according to an arbitrary condition function?

I have a dictionary of points, say: 7 Answers 7 ...
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xcopy file, rename, suppress “Does xxx specify a file name…” message

This seems pretty simple and maybe I'm just overlooking the proper flag , but how would I, in one command, copy a file from one directory to another and rename it in the destination directory? Here's my command: ...
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Weird Integer boxing in Java

I just saw code similar to this: 10 Answers 10 ...
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How do I split a multi-line string into multiple lines?

I have a multi-line string literal that I want to do an operation on each line, like so: 6 Answers ...
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Converting strings to floats in a DataFrame

How to covert a DataFrame column containing strings and NaN values to floats. And there is another column whose values are strings and floats; how to convert this entire column to floats. ...