大约有 45,000 项符合查询结果（耗时：0.0523秒） [XML]
Default background color of SVG root element
...ugh as most browsers are targetting SVG 1.1 at this time. Opera implements it FWIW.
A more cross-browser solution currently would be to stick a <rect> element with width and height of 100% and fill="red" as the first child of the <svg> element, for example:
<rect width="100%" height...
Make sure only a single instance of a program is running
...
The following code should do the job, it is cross-platform and runs on Python 2.4-3.2. I tested it on Windows, OS X and Linux.
from tendo import singleton
me = singleton.SingleInstance() # will sys.exit(-1) if other instance is running
The latest code version ...
What is the dependency inversion principle and why is it important?
What is the dependency inversion principle and why is it important?
16 Answers
16
...
How to track untracked content?
...
You have added vendor/plugins/open_flash_chart_2 as “gitlink” entry, but never defined it as a submodule. Effectively you are using the internal feature that git submodule uses (gitlink entries) but you are not using the submodule feature itself.
You probably did something l...
Is PHP compiled or interpreted?
...nguage. The binary that lets you interpret PHP is compiled, but what you write is interpreted.
You can see more on the Wikipedia page for Interpreted languages
share
|
improve this answer
...
When should one use final for method parameters and local variables?
...rameters and local variables, not final methods or classes. For constants, it makes obvious sense.
15 Answers
...
How does a Java HashMap handle different objects with the same hash code?
...
A hashmap works like this (this is a little bit simplified, but it illustrates the basic mechanism):
It has a number of "buckets" which it uses to store key-value pairs in. Each bucket has a unique number - that's what identifies the bucket. When you put a key-v...
C# - What does the Assert() method do? Is it still useful?
I am debugging with breakpoints and I realize the assert call? I thought it was only for unit tests. What does it do more than breakpoint? Since I can breakpoint, why should I use Assert?
...
What is an existential type?
... because of the existential operator (∃). I'm not sure what the point of it is, though. What's the difference between
11...
Adding a directory to $LOAD_PATH (Ruby)
...TH (or $:). I see the advantages of doing this in case you're not working with a gem. One seems more verbose than the other, obviously, but is there a reason to go with one over the other?
...