大约有 10,900 项符合查询结果（耗时：0.0380秒） [XML]
When do I need to use AtomicBoolean in Java?
How I can use AtomicBoolean and what is that class for?
5 Answers
5
...
Understanding $.proxy() in jQuery
...ent!
$(this).addClass('aNewClass');
}, 1000);
});
So what we can do instead, is to call $.proxy(), sending it the function and the value we want to assign to this, and it will return a function that will retain that value.
$('#myElement').click(function() {
// ------------------v--...
How to display unique records from a has_many through relationship?
...iq => true
From the Rails documentation:
:uniq
If true, duplicates will be omitted from the collection. Useful in conjunction with :through.
UPDATE FOR RAILS 4:
In Rails 4, has_many :products, :through => :orders, :uniq => true is deprecated. Instead, you should now write has_...
Git: Set up a fetch-only remote?
...
I don't think you can remove the push URL, you can only override it to be something other than the pull URL. So I think the closest you'll get is something like this:
$ git remote set-url --push origin no-pushing
$ git push
fatal: 'no-pushing...
Modifying a query string without reloading the page
...
If you are looking for Hash modification, your solution works ok. However, if you want to change the query, you can use the pushState, as you said. Here it is an example that might help you to implement it properly. I tested and it worked fine:
if (history.p...
Percentage Height HTML 5/CSS
...pressed in terms of percentage of the parent you've made yourself a little Catch 22. The browser gives up and just uses the content height.
So the parent of the div must have an explicit height property. Whilst that height can also be a percentage if you want, that just moves the problem up to the ...
What's the (hidden) cost of Scala's lazy val?
One handy feature of Scala is lazy val , where the evaluation of a val is delayed until it's necessary (at first access).
...
Set a persistent environment variable from cmd.exe
...e displayed if you print the usage (setx /?), in particular:
2) On a local system, variables created or modified by this tool will be available in future command windows but not in the current CMD.exe command window.
3) On a remote system, variables created or modified by this tool will be ...
background function in Python
...got a Python script that sometimes displays images to the user. The images can, at times, be quite large, and they are reused often. Displaying them is not critical, but displaying the message associated with them is. I've got a function that downloads the image needed and saves it locally. Right no...
Why does 'continue' behave like 'break' in a Foreach-Object?
...
From what OP is saying apparently continue can be used to simulate a break in ForEach-Object :)
– Richard Hauer
Jun 19 '15 at 7:56
7
...