大约有 45,000 项符合查询结果（耗时：0.0325秒） [XML]
Developing for Android in Eclipse: R.java not regenerating
...ke sure your layout.xml files don't contains errors. Eclipse seems to be a bit buggy here: sometimes it doesn't mark the errors within the XML nor the package explorer. In such a case: Take a look at the "console" or "problems" view after using "clean". All errors should be displayed there. Fix them...
list.clear() vs list = new ArrayList(); [duplicate]
...ter. But my intuition is that the difference will not be that great.
Two bits of advice on optimization:
Don't waste time trying to optimize this ... unless the application is objectively too slow AND measurement using a profiler tells you that this is a performance hotspot. (The chances are th...
Why does ++[[]][+[]]+[+[]] return the string “10”?
...
This one evaluates to the same but a bit smaller
+!![]+''+(+[])
[] - is an array is converted that is converted to 0 when you add or subtract from it, so hence +[] = 0
![] - evaluates to false, so hence !![] evaluates to true
+!![] - converts the true to a n...
Download data url file
...
answered Oct 12 '10 at 15:24
PekkaPekka
408k128128 gold badges907907 silver badges10481048 bronze badges
...
nginx: [emerg] could not build the server_names_hash, you should increase server_names_hash_bucket_s
...
This sounds perhaps a bit random, but it might help an nginx newb like myself.
I got this error when I left off a ; on the server_name line.
had:
server_name www.mydomain.com
access_log /var/log/nginx/www.mydomain.com;
fix:
se...
Converting List to List
...
@Andreas oldList.getClass().newInstance() will do
– Lluis Martinez
May 9 '13 at 16:56
add a comment
|
...
What is database pooling?
... is used in preference to having to create another one.
Refer to the following diagram for the next few paragraphs:
+---------+
| |
| Clients |
+---------+ |
| |-+ (1) +------+ (3) +----------+
| Clients | ===#===> | Open | =======> | RealOpen |
| | |...
Unit testing code with a file system dependency
... testing code with file system dependencies, let's say you had something a bit more interesting going on with a file and you wanted to save the Base64 encoded contents of a byte[] to a file. You can use streams for this to test that your code does the right thing without having to check how it does ...
What is 'YTowOnt9'?
...
kojirokojiro
65k1414 gold badges110110 silver badges168168 bronze badges
24
...
Is it possible to use Java 8 for Android development?
...
It was a bit of a struggle to get it working, but once I actually followed the right instructions it worked nicely. Note to Eclipse users: Eclipse doesn't work well with this, I suggest migrating to Android Studio (I will miss Eclipse...