大约有 44,000 项符合查询结果（耗时：0.0735秒） [XML]
What's the best way of scraping data from a website? [closed]
...y are already familiar with regexes. It's a huge mistake, use xpath or css selectors to navigate html and only use regular expressions to extract data from actual text inside an html node. This might already be obvious to you, it becomes obvious quickly if you try it but a lot of people waste a lot ...
WebView and HTML5
... our websites... Pretty simple with the WebViewClient . until I hit the video.
13 Answers
...
How should equals and hashcode be implemented when using JPA and Hibernate
...
Hibernate has a nice and long description of when / how to override equals() / hashCode() in documentation
The gist of it is you only need to worry about it if your entity will be part of a Set or if you're going to be detaching / attaching its instances. The latter is not that common. T...
Getting the location from an IP address [duplicate]
...good and reliable way to do this in PHP? I am using JavaScript for client-side scripting, PHP for server-side scripting, and MySQL for the database.
...
MongoDB, remove object from array
...
try..
db.mycollection.update(
{'_id': ObjectId("5150a1199fac0e6910000002")},
{ $pull: { "items" : { id: 23 } } },
false,
true
);
share
|
improve this...
How to return an empty ActiveRecord relation?
...
A more portable solution that doesn't require an "id" column and doesn't assume there won't be a row with an id of 0:
scope :none, where("1 = 0")
I'm still looking for a more "correct" way.
share
...
Mongod complains that there is no /data/db folder
...sing my new mac for the first time today. I am following the get started guide on the mongodb.org up until the step where one creates the /data/db directory. btw, I used the homebrew route.
...
Why do we need tuples in Python (or any immutable data type)?
...
@musicfreak, see the edit I just did where building a tuple is over 7.6 times faster than building the equivalent list -- now you can't say you've "never seen a noticeable difference" any more, unless your definition of "noticeable" is truly peculiar...
...
Questions every good .NET developer should be able to answer? [closed]
... which hooks onto the custom event handler.
(XML) Load an XML document and select all of the nodes with properties x, y, and z.
(Functional programming) Create a function that accepts another function as a parameter. A Map or Fold function works really good for this.
(Reflection) Write a function wh...
What does Html.HiddenFor do?
Although I have read the documentation on Html.HiddenFor, I've not grasped what is it used for...
4 Answers
...