大约有 11,500 项符合查询结果（耗时：0.0202秒） [XML]
Why '&&' and not '&'?
Why is && preferable to & and || preferable to | ?
16 Answers
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Correct way to find max in an Array in Swift
I've so far got a simple (but potentially expensive) way:
12 Answers
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Why doesn't await on Task.WhenAll throw an AggregateException?
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I don't exactly remember where, but I read somewhere that with new async/await keywords, they unwrap the AggregateException into the actual exception.
So, in catch block, you get the actual exception and not the aggregated one. This helps us writ...
How to iterate over a JavaScript object?
I have an object in JavaScript:
18 Answers
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What is a “callable”?
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A callable is anything that can be called.
The built-in callable (PyCallable_Check in objects.c) checks if the argument is either:
an instance of a class with a __call__ method or
is of a type that has a non null tp_call (c stru...
Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array
...the same as the current. Assuming your sort algorithm is good, this should be less than O(n2):
const findDuplicates = (arr) => {
let sorted_arr = arr.slice().sort(); // You can define the comparing function here.
// JS by default uses a crappy string compare.
// (we use slice to cl...
CSS3 Rotate Animation
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Here is a demo. The correct animation CSS:
.image {
position: absolute;
top: 50%;
left: 50%;
width: 120px;
height: 120px;
margin:-60px 0 0 -60px;
-webkit-animation:spin 4s linear infinite;
-moz-animation:spin 4s linear infinite;
animation:spin 4s l...
What is the most pythonic way to check if an object is a number?
Given an arbitrary python object, what's the best way to determine whether it is a number? Here is is defined as acts like a number in certain circumstances .
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Capitalize words in string [duplicate]
What is the best approach to capitalize words in a string?
21 Answers
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Shortest distance between a point and a line segment
I need a basic function to find the shortest distance between a point and a line segment. Feel free to write the solution in any language you want; I can translate it into what I'm using (Javascript).
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