大约有 47,000 项符合查询结果（耗时：0.0772秒） [XML]
java.util.regex - importance of Pattern.compile()?
... that all .NET Regex objects are cached, which is incorrect. Since .NET 2.0, automatic caching occurs only with static methods like Regex.Matches(), not when you call a Regex constructor directly. ref)
share
|
...
std::string to float or double
...
std::string num = "0.6";
double temp = ::atof(num.c_str());
Does it for me, it is a valid C++ syntax to convert a string to a double.
You can do it with the stringstream or boost::lexical_cast but those come with a performance penalty.
Ah...
Double vs single quotes
...
204
" " allows you to do string interpolation, e.g.:
world_type = 'Mars'
"Hello #{world_type}"
...
How can I embed a YouTube video on GitHub wiki pages?
...:
[](https://www.youtube.com/watch?v=YOUTUBE_VIDEO_ID_HERE)
For more information about Markdown look at this Markdown cheatsheet on GitHub.
For more information about Youtube image links look this question.
...
How do I get the current GPS location programmatically in Android?
...();
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER, 5000, 10, locationListener);
Here is the sample code to do so
/*---------- Listener class to get coordinates ------------- */
private class MyLocationListener implements LocationListener {
@Override
public void o...
Multi flavor app based on multi flavor library in Android Gradle
... |
edited Aug 1 '15 at 15:07
answered Jul 23 '14 at 12:37
A...
What's the reason I can't create generic array types in Java?
...
209
It's because Java's arrays (unlike generics) contain, at runtime, information about its compone...
Iterating through a JSON object
.... Instead of:
json_raw= raw.readlines()
json_object = json.loads(json_raw[0])
you should really just do:
json_object = json.load(raw)
You shouldn't think of what you get as a "JSON object". What you have is a list. The list contains two dicts. The dicts contain various key/value pairs, all str...
How to empty a list in C#?
...ecrocomment this because some misinformation has been provided here as of 2020.List<T>.Clear properly clears all references which allows the GC to clear the allocs when necessary. new List<T> does NOT do this and is unsuitable in effectively all scenarios
– John
...
How to add anything in through jquery/javascript?
...
150
You can select it and add to it as normal:
$('head').append('<link />');
...