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Copy a stream to avoid “stream has already been operated upon or closed”
... Brian GoetzBrian Goetz
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How can I unit test Arduino code?
...ehavior and guess whether your code is doing what you expect
Repeat
Step 3 is particularly nasty if you expect to get diagnostic messages via serial port but your project itself needs to use your Arduino's only hardware serial port. If you were thinking that the SoftwareSerial library might help,...
How do I abort the execution of a Python script? [duplicate]
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273
To exit a script you can use,
import sys
sys.exit()
You can also provide an exit status value...
Check if one list contains element from the other
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edited Jul 3 '19 at 4:19
answered Aug 3 '12 at 15:59
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Remove blank lines with grep
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308
Try the following:
grep -v -e '^$' foo.txt
The -e option allows regex patterns for matching...
Can Flask have optional URL parameters?
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363
Another way is to write
@user.route('/<user_id>', defaults={'username': None})
@user.ro...
How to use the toString method in Java?
Can anybody explain to me the concept of the toString() method, defined in the Object class? How is it used, and what is its purpose?
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How to execute a Ruby script in Terminal?
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Vince
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answered Jan 4 '12 at 2:37
RobinRobin
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how to convert an RGB image to numpy array?
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awiebe
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answered Oct 15 '11 at 8:02
Andrey KamaevAndrey...
What are the differences among grep, awk & sed? [duplicate]
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