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Why doesn't Java Map extend Collection?
...being a particularly useful abstraction. For example:
Set<Map.Entry<String,String>>
would allow:
set.add(entry("hello", "world"));
set.add(entry("hello", "world 2");
(assuming an entry() method that creates a Map.Entry instance)
Maps require unique keys so this would violate this....
Version of SQLite used in Android?
...mory:", null).rawQuery("select sqlite_version() AS sqlite_version", null);
String sqliteVersion = "";
while(cursor.moveToNext()){
sqliteVersion += cursor.getString(0);
}
This is just a piece of quick, dirty code to retrieve the sqlite version. For instance on a HTC Hero with Android 2.1, I get:...
How to redirect from OnActionExecuting in Base Controller?
...Instead of new RedirectResult(url) you could also use new RedirectToAction(string action, string controller). This may have been added to MVC after you posted your answer. Your solution put me on the right track anyway.
– Manfred
Apr 22 '12 at 2:00
...
pandas DataFrame: replace nan values with average of columns
...7
8 1.948430 1.025011 -2.982224
9 0.019698 -0.795876 -0.046431
The docstring of fillna says that value should be a scalar or a dict, however, it seems to work with a Series as well. If you want to pass a dict, you could use df.mean().to_dict().
...
How to preview git-pull without doing fetch?
...
Could you swap out the ref string for HEAD..@{u}? It's simpler, and does not require that the remote be named "origin" or that your branch be named the same as it is on the remote.
– Michael
Jan 25 '19 at 15:48
...
JavaScript replace/regex
...You need to double escape any RegExp characters (once for the slash in the string and once for the regexp):
"$TESTONE $TESTONE".replace( new RegExp("\\$TESTONE","gm"),"foo")
Otherwise, it looks for the end of the line and 'TESTONE' (which it never finds).
Personally, I'm not a big fan of build...
HTML select form with option to enter custom value
...lected option value, or entered text, to a GET of the same page as a query string. Does anyone know how to convert the action to a POST, so I can grab the value in a php file and do something with it there?
– Han
Sep 29 '19 at 8:17
...
Sqlite primary key on multiple columns
... keys in any DBMS.
create table foo
(
fooint integer not null
,foobar string not null
,fooval real
,primary key (fooint, foobar)
)
;
share
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improve this answer
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f...
Stretch and scale CSS background
...0; i < images.length; i++) {
var image = images[i],
width = String(image.currentStyle.width);
if (width.indexOf('%') == -1) {
continue;
}
image.origWidth = image.offsetWidth;
image.origHeight = image.offsetHeight;
imgCache.push(image);
c.ieAlpha(imag...
Error 1046 No database Selected, how to resolve?
...
one more note - make sure that the jdbc connection string contains the schema name and that schema is created already.
– Gaurav
Sep 3 at 21:16
add a co...