大约有 44,700 项符合查询结果（耗时：0.0416秒） [XML]
what exactly is device pixel ratio?
...s. For instance, the iPhone 4 and iPhone 4S report a device pixel ratio of 2, because the physical linear resolution is double the logical linear resolution.
Physical resolution: 960 x 640
Logical resolution: 480 x 320
The formula is:
Where:
is the physical linear resolution
and:
is the...
Difference between Dictionary and Hashtable [duplicate]
...yping (and compile-time verification)
use without boxing
If you are .NET 2.0 or above, you should prefer Dictionary<TKey,TValue> (and the other generic collections)
A subtle but important difference is that Hashtable supports multiple reader threads with a single writer thread, while Dictio...
What's the equivalent of use-commit-times for git?
...
25
I am not sure this would be appropriate for a DVCS (as in "Distributed" VCS)
The huge discussio...
Why does the expression 0 < 0 == 0 return False in Python?
Looking into Queue.py in Python 2.6, I found this construct that I found a bit strange:
9 Answers
...
How to create a multiline UITextfield?
...
Undo♦
25k2121 gold badges9999 silver badges124124 bronze badges
answered Aug 28 '09 at 8:34
h4xxrh4xxr
...
Why is HttpClient BaseAddress not working?
...
762
It turns out that, out of the four possible permutations of including or excluding trailing or l...
Differences between action and actionListener
...ctionListener}" />
Note that you can't pass additional arguments by EL 2.2. You can however override the ActionEvent argument altogether by passing and specifying custom argument(s). The following examples are valid:
<h:commandXxx ... actionListener="#{bean.methodWithoutArguments()}" />
&l...
HTML5 Canvas 100% Width Height of Viewport?
...
260
In order to make the canvas full screen width and height always, meaning even when the browser...
“Ago” date/time functions in Ruby/Rails
...f there's a way in Rails to calculate time stamp like - half a minute ago, 2 minute ago, 1 day ago etc. Something like twitter real time date stamp.
...