大约有 31,840 项符合查询结果（耗时：0.0480秒） [XML]
HTML 5: Is it , , or ?
... have your html be well-formed xml, that's it. Of course when transforming one into another you have to make sure it's still valid, but is it worth mentioning? :)
– Michael Krelin - hacker
Dec 22 '09 at 14:37
...
How does the extend() function work in jQuery?
...ar);
Results in:
A: Foo=null Bar=a
Single Parameter
If you pass just one object to jQuery.extend(), then jQuery assumes that the jQuery object itself is the "first" parameter (ie: the one to be modified), and your object is the "second" (ie: the one to add to the first). So:
console.log( "Bef...
Why compile Python code?
...e .pyc file is almost invariably smaller. Especially if you comment a lot. One of mine is 28419 as .py, but only 17879 as .pyc -- so load time is better as well. Finally, you can precompile top level scripts this way: python -m compileall myscript.py
– fyngyrz
...
SQL UPDATE SET one column to be equal to a value in a related table referenced by a different column
I hope that made sense, let me elaborate:
10 Answers
10
...
Applying .gitignore to committed files
...ere's a lot of files though. I don't want to have do this for every single one
– user880954
Sep 23 '11 at 11:08
1
...
What is the advantage of using Restangular over ngResource?
...n this by "remembering" the URLs.
So if you do in some place
Restangular.one("users", 123).get().then(function(user) {
$scope.user = user;
});
// Some other code
//Automatically does the request to /users/123/cars as it remembers in which object you're asking it.
$scope.user.getList('cars')
...
Should it be “Arrange-Assert-Act-Assert”?
...d in all the other tests. This gives a better isolation of concerns, since one test case only verifies one thing.
There may be many preconditions that need to be satisfied for a given test case, so you may need more than one Guard Assertion. Instead of repeating those in all tests, having one (and ...
What is the difference between using IDisposable vs a destructor in C#?
...
One extra thing to say. Do not add a finalizer to your class unless you really, really need one. If you add a finalizer (destructor) the GC has to call it (even an empty finalizer) and to call it the object will always surviv...
What is the difference between a symbolic link and a hard link?
Recently I was asked this during a job interview. I was honest and said I knew how a symbolic link behaves and how to create one, but do not understand the use of a hard link and how it differs from a symbolic one.
...
detach all packages while working in R
...
So, someone should have simply answered the following.
lapply(paste('package:',names(sessionInfo()$otherPkgs),sep=""),detach,character.only=TRUE,unload=TRUE)
(edit: 6-28-19)
In the latest version of R 3.6.0 please use instead.
invis...