大约有 38,000 项符合查询结果（耗时：0.0466秒） [XML]
What's the best way of scraping data from a website? [closed]
...ial and error so you will want a workflow that makes this easy.
Language
PHP is basically out, it's not well suited for this task and the library/framework support is poor in this area. Python (Scrapy is a great starting point) and Clojure/Clojurescript (incredibly powerful and productive but a bi...
Why is it slower to iterate over a small string than a small list?
...rule out Tim Peter's 10-times-upvoted answer!
>>> foo = iterable[123]
>>> iterable[36] is foo
True
These are not new objects!
But this is worth mentioning: indexing costs. The difference will likely be in the indexing, so remove the iteration and just index:
>>> pytho...
Doctrine - How to print out the real sql, not just the prepared statement?
We're using Doctrine, a PHP ORM. I am creating a query like this:
19 Answers
19
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Please explain some of Paul Graham's points on Lisp
...)
;; this is the interesting bit:
(println (str/replace-re #"\d+" "FOO" "a123b4c56"))
This snippet of Clojure code prints out aFOObFOOcFOO. Note that Clojure arguably does not fully satisfy the fourth point on your list, since read-time is not really open to user code; I will discuss what it would...
Biggest advantage to using ASP.Net MVC vs web forms
...wanted to go back to mixing code with content I'd look at developing using PHP which has a far more mature environment for that kind of development. If there are so many problems with ASP.NET then why not fix those issues?
Last but not least the new Razor engine means it is even harder to distingui...
JavaScript equivalent of jQuery's extend method
...42,
prop3: true,
prop4: 20.16,
};
const obj2 = {
prop4: 77.123,
propNew1: 'newVal1',
propNew2: 71,
};
assert.deepEqual(utils.extend(obj1, obj2), {
prop1: 'val1',
prop2: 42,
prop3: true,
prop4: 77.123,
propNew1: 'newVal1',
propNew2: 71,
});
});
i...
How to capitalize the first letter in a String in Ruby
..."hello".capitalize #=> "Hello"
"HELLO".capitalize #=> "Hello"
"123ABC".capitalize #=> "123abc"
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html - table row like a link
...hn Smith</a></td>
<td><a href="person1.html">123 Fake St</a></td>
<td><a href="person1.html">90210</a></td>
</tr>
<tr>
<td><a href="person2.html">Peter Nguyen</a></td>
<...
Good examples of Not a Functor/Functor/Applicative/Monad?
...fied. For example, fmap id ≠ id, because let (Q(f,_)) = fmap id (Q(read,"123")) in f "456" is 123, but let (Q(f,_)) = id (Q(read,"123")) in f "456" is 456.
In fact, F is only a profunctor, - it is neither a functor nor a contrafunctor.
A lawful functor that is not applicative because the type s...
Is there an easy way to create ordinals in C#?
...inal());
Assert.AreEqual("122nd", 122.Ordinal());
Assert.AreEqual("123rd", 123.Ordinal());
Assert.AreEqual("124th", 124.Ordinal());
}
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