大约有 16,000 项符合查询结果（耗时：0.0275秒） [XML]
How to delete shared preferences data from App in Android
...
To remove specific values: SharedPreferences.Editor.remove() followed by a commit()
To remove them all SharedPreferences.Editor.clear() followed by a commit()
If you don't care about the return value and you're using this from your application's main thread, consider using apply() instead.
...
Soft wrap at 80 characters in Vim in window of arbitrary width
I want to use Vim's soft wrap capability ( :set wrap ) to wrap some code at 80 characters, regardless of my actual window width.
...
Array slicing in Ruby: explanation for illogical behaviour (taken from Rubykoans.com)
I was going through the exercises in Ruby Koans and I was struck by the following Ruby quirk that I found really unexplainable:
...
“git pull” or “git merge” between master and development branches
I have my master branch and a develop branch for working on a few changes. I need to merge changes from master into develop , but will eventually merge everything from develop into master . I have two different workflows in mind:
...
What is the difference between Unidirectional and Bidirectional JPA and Hibernate associations?
...
The main differenece is that bidirectional relationship provides navigational access in both directions, so that you can access the other side without explicit queries. Also it allows you to apply cascading options to both directions.
Note that navigational access is not always good, especial...
How can I use a Python script in the command line without cd-ing to its directory? Is it the PYTHONP
...script in the path the file is not
found. When I cd to the directory holding the script the script runs. So what good is the
PYTHONPATH?
...
const char* concatenation
...ointing to char constants. You cannot change the char constants pointed to by these pointers. So anything like:
strcat(one,two); // append string two to string one.
will not work. Instead you should have a separate variable(char array) to hold the result. Something like this:
char result[100]; ...
What are the differences between json and simplejson Python modules?
...cts using simplejson module instead of json module from the Standard Library. Also, there are many different simplejson modules. Why would use these alternatives, instead of the one in the Standard Library?
...
'IF' in 'SELECT' statement - choose output value based on column values
I need amount to be amount if report.type='P' and -amount if report.type='N' . How do I add this to the above query?
...
Php multiple delimiters in explode
I have a problem, I have a string array, and I want to explode in different delimiter. For Example
12 Answers
...