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Test if remote TCP port is open from a shell script
...onnection timeout separate from/in addition to the -w# timeout, which basically functions as a read timeout.
– Doktor J
Aug 30 '17 at 18:46
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When to use the brace-enclosed initializer?
...py (=) initialization (because then in case of error, you'll never accidentally invoke an explicit constructor, which generally interprets the provided value differently). In places where copy initialization is not available, see if brace initialization has the correct semantics, and if so, use that...
Installing Ruby Gem in Windows
I'm new to ruby. I tried to install GEM on my PC by following the steps given in the site http://rubygems.org/pages/download .
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How many Activities vs Fragments?
...at most closely matches the tutorial mentioned in the question is the one called "Layout" in the app; or FragmentLayoutSupport in the source code.
In this demo, the logic has been moved out of the Activity and into the Fragment. The TitlesFragment actually contains the logic for changing Fragments....
Increasing the maximum number of TCP/IP connections in Linux
...local_port_range = 32768 61000
net.ipv4.tcp_fin_timeout = 60
This basically means your system cannot consistently guarantee more than (61000 - 32768) / 60 = 470 sockets per second. If you are not happy with that, you could begin with increasing the port_range. Setting the range to 15000 61000 is...
How does inline Javascript (in HTML) work?
I know this is bad practice. Don't write code like this if at all possible.
6 Answers
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How do I save a stream to a file in C#?
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Note that you have to call myOtherObject.InputStream.Seek(0, SeekOrigin.Begin) if you're not already at the beginning or you won't copy the entire stream.
– Steve Rukuts
Mar 22 '12 at 12:00
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Checking length of dictionary object [duplicate]
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What I do is use Object.keys() to return a list of all the keys and then get the length of that
Object.keys(dictionary).length
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How does strtok() split the string into tokens in C?
... string into tokens. I am unable to understand from the manual what it actually does.
15 Answers
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Django datetime issues (default=datetime.now())
...mplish what you are trying to do already:
date = models.DateTimeField(auto_now_add=True, blank=True)
or
date = models.DateTimeField(default=datetime.now, blank=True)
The difference between the second example and what you currently have is the lack of parentheses. By passing datetime.now withou...