大约有 47,000 项符合查询结果（耗时：0.0632秒） [XML]
Hidden features of HTML
...
This is a neat feature I did not know about!
– Chrisb
Jul 27 '09 at 15:52
add a comment
|
...
How to get the absolute coordinates of a view
...
Now that's the kind of function I expected to find. Unfortunately, I must not be using it properly. I realise it was a known bug that getLocationOnScreen gives a null pointer exception in Android v1.5 (the platform I'm coding...
Create list of single item repeated N times
...'string'] * len(columns)
Mutable items
I've used Python for a long time now, and I have never seen a use-case where I would do the above with a mutable instance. Instead, to get, say, a mutable empty list, set, or dict, you should do something like this:
list_of_lists = [[] for _ in columns]
T...
Why should I not include cpp files and instead use a header?
...
To the best of my knowledge, the C++ standard knows no difference between header files and source files. As far as the language is concerned, any text file with legal code is the same as any other. However, although not illegal, including sou...
HTTP 404 Page Not Found in Web Api hosted in IIS 7.5
...fectly well when I tested it using the VS 2010 debugging dev server. But I now deployed it to IIS 7.5 and I am getting a HTTP 404 error when trying to access the application.
...
XML parsing of a variable string in JavaScript
...uys answer worked fine in my case. What's not decent about that, I do not know.
– eric
Apr 19 '12 at 15:21
...
I can’t find the Android keytool
...r your certificate's MD5 fingerprint. Wtf is that, you might say. I don't know, but just do what I say and your Android app doesn't get hurt.
Go to Start>Run and type cmd to open up a command prompt. You need to navigate to the directory with the keytool.exe file, which might be in a slightly di...
How to do ToString for a possibly null object?
...
C# 6.0 Edit:
With C# 6.0 we can now have a succinct, cast-free version of the orignal method:
string s = myObj?.ToString() ?? "";
Or even using interpolation:
string s = $"{myObj}";
Original Answer:
string s = (myObj ?? String.Empty).ToString();
or
strin...
Keep overflow div scrolled to bottom unless user scrolls up
...ntent dynamically added to it and needs to stay scrolled all the way down. Now if the user decides to scroll up I don't want it to jump back to the bottom until the user scrolls all the way down again
...
What does “hashable” mean in Python?
...
if it has hash value now what is hash value. can you give some example
– user1755071
Jan 26 '13 at 9:56
...