大约有 48,000 项符合查询结果（耗时：0.0960秒） [XML]
Unpacking, extended unpacking and nested extended unpacking
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115
My apologies for the length of this post, but I decided to opt for completeness.
Once you kno...
How to save traceback / sys.exc_info() values in a variable?
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187
This is how I do it:
>>> import traceback
>>> try:
... int('k')
... excep...
Sequence contains more than one element
... This method will only succeed when the collections contains exactly 0 or 1 element. I believe you are looking for FirstOrDefault which will succeed no matter how many elements are in the collection.
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Default function arguments in Rust
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edited Mar 24 '19 at 21:20
answered Jun 5 '14 at 0:06
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Remove leading and trailing spaces?
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edited Dec 28 '16 at 5:03
Greg Schmit
3,39822 gold badges1616 silver badges3232 bronze badges
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How to get the index of a maximum element in a numpy array along one axis
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144
>>> a.argmax(axis=0)
array([1, 1, 0])
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Why was the arguments.callee.caller property deprecated in JavaScript?
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// This snippet will work:
function factorial(n) {
return (!(n>1))? 1 : factorial(n-1)*n;
}
[1,2,3,4,5].map(factorial);
// But this snippet will not:
[1,2,3,4,5].map(function(n) {
return (!(n>1))? 1 : /* what goes here? */ (n-1)*n;
});
To get around this, arguments.calle...
What would cause an algorithm to have O(log log n) complexity?
...ons by a constant, the algorithm must shrink the problem size down to 0 or 1. This is why, for example, binary search has complexity O(log n).
Interestingly, there is a similar way of shrinking down the size of a problem that yields runtimes of the form O(log log n). Instead of dividing the input ...
Connect to a locally built Jekyll Server using mobile devices in the LAN
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183
Try jekyll serve --host=0.0.0.0 when you invoke Jekyll on the command line.
That will make Je...
How to click first link in list of items after upgrading to Capybara 2.0?
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177
You can just use:
first('.item').click_link('Agree')
or
first('.item > a').click
(if ...