大约有 48,000 项符合查询结果(耗时:0.0656秒) [XML]

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What's “P=NP?”, and why is it such a famous question? [closed]

...ix multiplication, the basic operation is multiplication of two numbers. Now the question is, what does deterministic vs. non-deterministic mean? There is an abstract computational model, an imaginary computer called a Turing machine (TM). This machine has a finite number of states, and an infin...
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How to make a great R reproducible example

...t, to compare solutions between themselves, and this way users that don't know (and don't need to know) functions like runif or sample are not confused that they can't get the same data. – Moody_Mudskipper Aug 10 '18 at 8:51 ...
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Java Interfaces/Implementation naming convention [duplicate]

... interface implementations (which may also be proxied - your code doesn't know!). Even if you only have two implementations - one a Mock for testing, and one that gets injected into the actual production code - this doesn't make having an interface superfluous. A well documented interface establis...
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How to use java.net.URLConnection to fire and handle HTTP requests?

...exOutOfBoundsException and consorts yourself. Preparing We first need to know at least the URL and the charset. The parameters are optional and depend on the functional requirements. String url = "http://example.com"; String charset = "UTF-8"; // Or in Java 7 and later, use the constant: java.nio....
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Split string on whitespace in Python [duplicate]

... Also good to know is that if you want the first word only (which means passing 1 as second argument), you can use None as the first argument: s.split(None, 1) – yak Nov 13 '11 at 19:00 ...
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ab load testing

...rdpress instead of some static HTML or index.php file because you need to know how everything performs together: including complex PHP code, and multiple MySQL queries... For example here is the results of testing a fresh install of Wordpress on the same system and WAMP environment (I'm using WampD...
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Set Background color programmatically [duplicate]

...oing white and black, but for basically any other color it's necessary to know this information. – aroth Aug 19 '16 at 5:25 1 ...
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What is the “FS”/“GS” register intended for?

So I know what the following registers and their uses are supposed to be: 5 Answers 5 ...
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What is the difference between a pseudo-class and a pseudo-element in CSS?

...lement refers to things that are part of the document, but you just don't know it yet. For example the first letter. Before you only had text. Now you have a first letter that you can target. It is a new concept, but was always part of the document. This also includes things like ::before; whil...
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“Undefined reference to” template class constructor [duplicate]

...cases. The choice is yours. The code in a template is merely a 'pattern' known to the compiler. The compiler won't compile the constructors cola<float>::cola(...) and cola<string>::cola(...) until it is forced to do so. And we must ensure that this compilation happens for the constructo...