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How do ports work with IPv6?
...t changed between the two versions is the addressing scheme, DHCP [DHCPv6] and ICMP [ICMPv6]. So basically, anything TCP/UDP related, including the port range (0-65535) remains unchanged.
Edit: Port 0 is a reserved port in TCP but it does exist. See RFC793
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How do you loop in a Windows batch file?
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FOR %%A IN (list) DO command parameters
list is a list of any elements, separated by either spaces, commas or semicolons.
command can be any internal or external command, batch file or even - in OS/2 and NT - a list of commands
parameters ...
How to calculate cumulative normal distribution?
...f(-1.96)
0.024997895148220435
In other words, approximately 95% of the standard normal interval lies within two standard deviations, centered on a standard mean of zero.
If you need the inverse CDF:
>>> norm.ppf(norm.cdf(1.96))
array(1.9599999999999991)
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How can I handle the warning of file_get_contents() function in PHP?
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Step 1: check the return code: if($content === FALSE) { // handle error here... }
Step 2: suppress the warning by putting an error control operator (i.e. @) in front of the call to file_get_contents():
$content = @file_get_contents($site);
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What are the differences between segment trees, interval trees, binary indexed trees and range trees
...re differences between segment trees, interval trees, binary indexed trees and range trees in terms of:
2 Answers
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How do I convert an existing callback API to promises?
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Promises have state, they start as pending and can settle to:
fulfilled meaning that the computation completed successfully.
rejected meaning that the computation failed.
Promise returning functions should never throw, they should return rejections instead. Throwi...
Substitute multiple whitespace with single whitespace in Python [duplicate]
...ity (if you'd rather avoid REs) is
' '.join(mystring.split())
The split and join perform the task you're explicitly asking about -- plus, they also do the extra one that you don't talk about but is seen in your example, removing trailing spaces;-).
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Is there a documented way to set the iPhone orientation?
...vice rotation in certain views but other don't particularly make sense in Landscape mode, so as I swapping the views out I would like to force the rotation to be set to portrait.
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How is Python's List Implemented?
Is it a linked list, an array? I searched around and only found people guessing. My C knowledge isn't good enough to look at the source code.
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Which version of Python do I have installed?
...script on a Windows server. How can I know which version of Python I have, and does it even really matter?
22 Answers
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