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How to change MenuItem icon in ActionBar programmatically
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getDrawable is deprecated. Anyone got a new solution?
– Solo
Sep 9 '17 at 13:26
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Wrapping StopWatch timing with a delegate or lambda?
... return sw.ElapsedMilliseconds;
}
}
Then call it like this:
var s = new Stopwatch();
Console.WriteLine(s.Time(() => DoStuff(), 1000));
You could add another overload which omits the "iterations" parameter and calls this version with some default value (like 1000).
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Bulk insert with SQLAlchemy ORM
...on is that SQLAlchemy needs to keep track of each object's identity (i.e., new primary keys), and bulk inserts interfere with that. For example, assuming your foo table contains an id column and is mapped to a Foo class:
x = Foo(bar=1)
print x.id
# None
session.add(x)
session.flush()
# BEGIN
# INSE...
从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...n {
String file = "datafile/item.csv";
DataModel model = new FileDataModel(new File(file));
UserSimilarity user = new EuclideanDistanceSimilarity(model);
NearestNUserNeighborhood neighbor = new NearestNUserNeighborhood(NEIGHBORHOOD_NUM, user, model);
Reco...
Django queries - id vs pk
...unction () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f2165865%2fdjango-queries-id-vs-pk%23new-answer', 'question_page');
}
);
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Jackson overcoming underscores in favor of camel-case
...ired effect:
@Bean
public ObjectMapper jacksonObjectMapper() {
return new ObjectMapper().setPropertyNamingStrategy(
PropertyNamingStrategy.CAMEL_CASE_TO_LOWER_CASE_WITH_UNDERSCORES);
}
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How to base64 encode image in linux bash / shell
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What problems? The two commands above should produce identical results, except the first is a useless use of cat.
– chepner
Jun 4 '13 at 13:27
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Calculating days between two dates with Java
...m 2013 is now outdated because some of the classes have been replaced. The new way of doing this is using the new java.time classes.
DateTimeFormatter dtf = DateTimeFormatter.ofPattern("dd MM yyyy");
String inputString1 = "23 01 1997";
String inputString2 = "27 04 1997";
try {
LocalDateTime da...
How to have Android Service communicate with Activity
...cted or something to true. Then in your Activity do this: Intent intent = new Intent(act, YourService.class); startService(intent); while(!YourService.isConnected) { sleep(300); } After that loop your service is running and you can do communication with it.. In my experience there are defin...
How do you test to see if a double is equal to NaN?
...n autoboxing (double getting converted to Double by the compiler/runtime); new feature from 1.5 onwards. Little risk going this direction; going from Double to double creates risk of NullPointerExceptions.
– M1EK
Sep 21 '09 at 21:01
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