大约有 47,000 项符合查询结果（耗时：0.0606秒） [XML]
How can I assign an ID to a view programmatically?
...n code using "R.id.somename" (effectively a constant.)
this int can change from build to build so never copy an id from gen/package.name/R.java, just use "R.id.somename".
(Also, an id assigned to a Preference in XML is not used when the Preference generates its View.)
Assign id via code (programma...
Storing Python dictionaries
...o write to a file:
import json
myfile.write(json.dumps(mydict))
To read from a file:
import json
mydict = json.loads(myfile.read())
myfile is the file object for the file that you stored the dict in.
share
|
...
Understanding dispatch_async
...to run tasks in the background.
For instance, if I am downloading a file from the internet and I want to update the user on the progress of the download, I will run the download in the priority default queue and update the UI in the main queue asynchronously.
dispatch_async(dispatch_get_global_qu...
What are the big improvements between guava and apache equivalent libraries?
...pache collections, string utils, etc. I need to decide if we should switch from the apache foundations implementation.
3 An...
Floating point vs integer calculations on modern hardware
...
Alas, I can only give you an "it depends" answer...
From my experience, there are many, many variables to performance...especially between integer & floating point math. It varies strongly from processor to processor (even within the same family such as x86) because diffe...
Gradle finds wrong JAVA_HOME even though it's correctly set
...
Turns out that the particular Gradle binary I downloaded from the Ubuntu 13.10 repository itself tries to export JAVA_HOME. Thanks to Lucas for suggesting this.
/usr/bin/gradle line 70:
export JAVA_HOME=/usr/lib/jvm/default-java
Commenting this line out solves the problem, and ...
Is it possible to modify variable in python that is in outer, but not global, scope?
...
@kindall that's a great hack - it's minimally different from the Python 3 syntax and much more readable than passing around a mutable object.
– dimo414
Sep 1 '15 at 0:17
...
RESTful call in Java
...
If you are calling a RESTful service from a Service Provider (e.g Facebook, Twitter), you can do it with any flavour of your choice:
If you don't want to use external libraries, you can use java.net.HttpURLConnection or javax.net.ssl.HttpsURLConnection (for SSL...
How to check if a Unix .tar.gz file is a valid file without uncompressing?
...e files integrity
http://linux.about.com/od/commands/l/blcmdl1_gzip.htm
from: http://unix.ittoolbox.com/groups/technical-functional/shellscript-l/how-to-test-file-integrity-of-targz-1138880
To test the gzip file is not corrupt:
gunzip -t file.tar.gz
To test the tar file inside is not corrupt:...
Create a pointer to two-dimensional array
...is provided by the array l_matix itself. The pointers to them take storage from where-ever they are declared in and as (stack, static data segment, ...).
– Johannes Schaub - litb
Jun 27 '09 at 19:32
...