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Socket 错误返回码详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...etwork is unreachable
WSAETIMEDOUT (10060) Connection timed out
WSAHOST_NOT_FOUND (11001) Host not found
WSASYSNOTREADY (10091) Network sub-system is unavailable
WSANOTINITIALISED (10093) WSAStartup() not performed
WSANO_DATA (11004) Valid name, no data of that type
WSANO_RECOVERY (11003...
How do you determine which backend is being used by matplotlib?
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Use the get_backend() function to obtain a string denoting which backend is in use:
>>> import matplotlib
>>> matplotlib.get_backend()
'TkAgg'
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filters on ng-model in an input
...e is with spaces: In AngularJS 1.0.3 ng-model on input automatically trims string, so it does not detect that model was changed if you add spaces at the end or at start (so spaces are not automatically removed by my code). But in 1.1.1 there is 'ng-trim' directive that allows to disable this functio...
XPath to select element based on childs child value
...try it! Generally you want single quotes ' rather than double quotes " for string literals in xpath, by the way.
– AakashM
Oct 22 '18 at 12:25
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ValueError : I/O operation on closed file
Here, p is a dictionary, w and c both are strings.
2 Answers
2
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How can I run an external command asynchronously from Python?
...d gives easy ways to have callbacks when your process spits out predefined strings, and generally makes interacting with the process much easier.
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LINQ query to return a Dictionary
...c.SomePropToSortOn)
.ToDictionary(mc => mc.KeyProp.ToString(),
mc => mc.ValueProp.ToString(),
StringComparer.OrdinalIgnoreCase);
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Code for a simple JavaScript countdown timer?
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You shouldn't pass a string to the first parameter of setTimeout, setTimeout(Decrement, 1000) is preferred. stackoverflow.com/questions/6232574/…
– Scottux
Apr 1 '15 at 17:24
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PHP sprintf escaping %
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Escape it with another %:
$stringWithVariables = 'About to deduct 50%% of %s %s from your Top-Up account.';
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GROUP_CONCAT comma separator - MySQL
...you've written it, you're concatenating artists.artistname with the '----' string using the default comma separator.
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