大约有 23,000 项符合查询结果（耗时：0.0331秒） [XML]
Can Retrofit with OKHttp use cache data when offline
...che != null) {
okHttpClient.setCache(cache);
}
String hostURL = context.getString(R.string.host_url);
api = new RestAdapter.Builder()
.setEndpoint(hostURL)
.setClient(new OkClient(okHttpClient))
.setRequestIntercept...
Check if an element contains a class in JavaScript?
...ix Kling: I need the innerHTML of the div to change between four different strings depending on which class it contains. I just used "I have class1", etc. as examples - the real strings are all different. I will only be showing one string at a time, not combining any (hence the breaks after each cas...
Possible to perform cross-database queries with PostgreSQL?
...nnection. If not found, the first argument is treated as a
connection info string as for dblink_connect, and the indicated
connection is made just for the duration of this command.
one of the good example:
SELECT *
FROM table1 tb1
LEFT JOIN (
SELECT *
FROM dblink('dbname=db2','SELECT ...
What is PECS (Producer Extends Consumer Super)?
... arguments in the subtype.
}
class Sub extends Super {
@Override
String testCoVariance(){ return null;} //compiles successfully i.e. return type is don't care(String is subtype of Object)
@Override
void testContraVariance(String parameter){} //doesn't support even though String is...
Android - Start service on boot
..." />
<application android:icon="@drawable/icon" android:label="@string/app_name">
<receiver android:name=".autostart">
<intent-filter>
<action android:name="android.intent.action.BOOT_COMPLETED" />
</intent-filter>...
Remove an element from a Bash array
...$delete}
pippo
$ array=( "${array[@]/$delete}" ) #Quotes when working with strings
If need to delete more than one element:
...
$ delete=(pluto pippo)
for del in ${delete[@]}
do
array=("${array[@]/$del}") #Quotes when working with strings
done
Caveat
This technique actually removes prefixes...
What is the difference between NaN and None?
...dcsv() and then assigning the values to a dictionary. The columns contain strings of numbers and letters. Occasionally there are cases where a cell is empty. In my opinion, the value read to that dictionary entry should be None but instead nan is assigned. Surely None is more descriptive of a...
How to write multiple line string using Bash with variables?
...Below mechanism helps in redirecting multiple lines to file. Keep complete string under " so that we can redirect values of the variable.
#!/bin/bash
kernel="2.6.39"
echo "line 1, ${kernel}
line 2," > a.txt
echo 'line 2, ${kernel}
line 2,' > b.txt
Content of a.txt is
line 1, 2.6.39
line 2...
How do the major C# DI/IoC frameworks compare? [closed]
...nses/notifications:
public class Ping : IRequest<Pong>
{
public string Message { get; set; }
}
public class Pong
{
public string Message { get; set; }
}
public class PingAsync : IAsyncRequest<Pong>
{
public string Message { get; set; }
}
public class Pinged : INotification {...
Pandas read_csv low_memory and dtype options
...s cannot know it is only numbers, it will probably keep it as the original strings until it has read the whole file.
Specifying dtypes (should always be done)
adding
dtype={'user_id': int}
to the pd.read_csv() call will make pandas know when it starts reading the file, that this is only integers.
A...