大约有 40,000 项符合查询结果（耗时：0.0729秒） [XML]
How to “crop” a rectangular image into a square with CSS?
I know that it is impossible to actually modify an image with CSS, which is why I put crop in quotes.
10 Answers
...
How to set environment variable for everyone under my linux system?
Can I have certain settings that are universal for all my users?
7 Answers
7
...
How does Python's super() work with multiple inheritance?
...ave trouble
understanding the super() function (new style classes) especially when it comes to multiple inheritance.
16 A...
Why must a lambda expression be cast when supplied as a plain Delegate parameter
...m goes away (qv Skeet's anwer) and we have this very succinct syntax:
int foo = 5;
public void SomeMethod()
{
var bar = "a string";
UI(() =>
{
//lifting is marvellous, anything in scope where the lambda
//expression is defined is available to the asynch code
someTextBlock.Text ...
Default filter in Django admin
How can I change the default filter choice from 'ALL'? I have a field named as status which has three values: activate , pending and rejected . When I use list_filter in Django admin, the filter is by default set to 'All' but I want to set it to pending by default.
...
Get all related Django model objects
How can I get a list of all the model objects that have a ForeignKey pointing to an object? (Something like the delete confirmation page in the Django admin before DELETE CASCADE).
...
How to discard local changes in an SVN checkout?
...er changes are not required : """Rest of the changes I made, were for basically debugging, and are no longer required.""" :)
– Cédric Julien
Feb 27 '12 at 10:54
1
...
How do I get the path of the current executed file in Python?
...ike a newbie question, but it is not. Some common approaches don't work in all cases:
13 Answers
...
How can I define colors as variables in CSS?
...les, so that I can just change a variable to have the new color applied to all elements that use it?
19 Answers
...
What do all of Scala's symbolic operators mean?
...se of teaching, into four categories:
Keywords/reserved symbols
Automatically imported methods
Common methods
Syntactic sugars/composition
It is fortunate, then, that most categories are represented in the question:
-> // Automatically imported method
||= // Syntactic sugar
++= // Syn...