大约有 16,000 项符合查询结果（耗时：0.0398秒） [XML]
Read String line by line
...air comparison though - String.split relies on the entire input being read into memory, which isn't always feasible (e.g. for large files).
– Adamski
Jul 8 '09 at 8:00
3
...
How do I serialize an object and save it to a file in Android?
...unctionality is implicitly added to your class if you use the Serializable interface. If all you want is simple object serialization, that is what I would use. It is extremely easy to implement too. developer.android.com/reference/java/io/Serializable.html
– mtmurdock
...
Class does not implement its superclass's required members
...convenience required init(coder: NSCoder) {
self.init(stringParam: "", intParam: 5)
}
Note the call to an initializer in self. This allows you to only have to use dummy values for the parameters, as opposed to all non-optional properties, while avoiding throwing a fatal error.
The third opt...
How do I measure time elapsed in Java? [duplicate]
...- starts;
}
public long time(TimeUnit unit) {
return unit.convert(time(), TimeUnit.MILLISECONDS);
}
}
Usage:
TimeWatch watch = TimeWatch.start();
// do something
long passedTimeInMs = watch.time();
long passedTimeInSeconds = watch.time(TimeUnit.SECONDS);
Aft...
How to display count of notifications in app launcher icon [duplicate]
...
Android ("vanilla" android without custom launchers and touch interfaces) does not allow changing of the application icon, because it is sealed in the .apk tightly once the program is compiled. There is no way to change it to a 'drawable' programmatically using standard APIs. You may ac...
Any way to Invoke a private method?
...
So then what is the point of having private methods if they can be called from outside the class?
– Peter Ajtai
Sep 19 '13 at 22:56
...
What's the difference between echo, print, and print_r in PHP?
I use echo and print_r much, and almost never use print .
11 Answers
11
...
How do I check if a string is valid JSON in Python?
... #prints True
print is_json('{"foo":[5,6.8],"foo":"bar"}') #prints True
Convert a JSON string to a Python dictionary:
import json
mydict = json.loads('{"foo":"bar"}')
print(mydict['foo']) #prints bar
mylist = json.loads("[5,6,7]")
print(mylist)
[5, 6, 7]
Convert a python object to JSON str...
Why use the SQL Server 2008 geography data type?
...lDegrees = 1
Begin
set @X = 1
END
Else
Begin
set @X = 24
End
-- convert to decimal degrees
set @Lat1 = @Latitude1 * @X
set @Long1 = @Longitude1 * @X
set @Lat2 = @Latitude2 * @X
set @Long2 = @Longitude2 * @X
-- convert to radians: radians = (degrees/180) * PI
set @Lat1 = (@Lat1 / 180) * @...
How to set RelativeLayout layout params in code not in xml?
...you have to do:
Create a RelativeLayout.LayoutParams object.
Use addRule(int) or addRule(int, int) to set the rules. The first method is used to add rules that don't require values.
Set the parameters to the view (in this case, to each button).
...