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How to prevent custom views from losing state across screen orientation changes
...generateViewId();
// assign the id to the view at the same index
getChildAt(i).setId(mViewIds[i]);
}
}
bundle.putIntArray(STATE_VIEW_IDS, mViewIds);
// return the bundle
return bundle;
}
@Override
protected void...
SQL Server NOLOCK and joins
...ed by the optimizer choosing not to access the table at all, or because an indexed view is accessed instead. In the latter case, accessing an indexed view can be prevented by using the OPTION (EXPAND VIEWS) query hint.
shar...
How to append something to an array?
...swer if you want to prepend any value to the start of an array (i.e. first index) then you can use Array.prototype.unshift for this purpose.
var arr = [1, 2, 3];
arr.unshift(0);
console.log(arr);
It also supports appending multiple values at once just like push.
Update
Another way with ES...
How to show popup message like in Stack Overflow
...erif;
position:fixed;
top:0px;
left:0px;
width:100%;
z-index:105;
text-align:center;
font-weight:bold;
font-size:100%;
color:white;
padding:10px 0px 10px 0px;
background-color:#8E1609;
}
#message span {
text-align: center;
width: 95%;
float:le...
How to deserialize a list using GSON or another JSON library in Java?
...on extends a class AbstractList and doesn't override the method remove(int index) from the base class. And if you look at the source code of the AbstractList.remove(int index) you would see it always thrown UnsupportedOperationException. The same is for add() method.
– Bogdan K...
Get users by name property using Firebase
...
Previously, Firebase required you to generate your own indexes or download all data at a location to find and retrieve elements that matched some child attribute (for example, all users with name === "Alex").
In October 2014, Firebase rolled out new querying functionality via th...
How to define a custom ORDER BY order in mySQL
...HAR etc. Internally MySQL stores the ENUM options in a specific order and indexes them, and so when ordering by an ENUM column specifically it will use that internal index instead of the string values ( unless CAST() is used to make it back to a VARCHAR)
– Simon at My School P...
Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]
...tion(x) x$z)
## y
## x a b c
## x 1 2 3
## y 3 3 2
Using matrix indexing:
This is kinda old school but is a nice demonstration of matrix indexing, which can be really useful in certain situations.
with(tmp, {
out <- matrix(nrow=nlevels(x), ncol=nlevels(y),
dimnames=...
Python __call__ special method practical example
...
I'd rather have a fact object that is indexable since your __call__ function is essentially an index. Also would use a list instead of a dict, but that's just me.
– Chris Lutz
Apr 28 '11 at 20:59
...
Use a LIKE statement on SQL Server XML Datatype
...sisted, and then you can search very efficiently on it (heck: you can even INDEX that field!).
Marc
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