大约有 40,000 项符合查询结果（耗时：0.0594秒） [XML]
How long should SQL email fields be? [duplicate]
... are hundreds longer ones up to the limit of our column (255) but they are apparently fake by visual inspection.
The peak of the length distribution is at 19.
There isn't long tail. Everything falls off sharply after 38.
We cleaned up the DB by throwing away anything longer than 40. The good news ...
ASP.Net error: “The type 'foo' exists in both ”temp1.dll“ and ”temp2.dll"
When running a web application project, at seemingly random times a page may fail with a CS0433 error: type exists in multiple DLL's. The DLL's are all generated DLL's residing in the "Temporary ASP.NET Files" directory.
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Unable to resolve host “”; No address associated with hostname [closed]
In my Android application for reading RSS links, I am getting this error:
17 Answers
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How to use UIScrollView in Storyboard
...hed it and it has a frame of 320,1000 but in order for this to work in our app we need to change the frame down to what the visible scrollview will be.
8: Add a runtime attribute with KeyPath frame with Type RECT and 0,0,320,416.
Now when we run our app we will have a visible scrollview has a fram...
Ruby on Rails: how to render a string as HTML?
...n, it is recommended to use sanitize instead of html_safe. Link
What's happening is that, as a security measure, Rails is escaping your string for you because it might have malicious code embedded in it. But if you tell Rails that your string is html_safe, it'll pass it right through.
@str = "&l...
from jquery $.ajax to angular $http
...JS way of calling $http would look like:
$http({
url: "http://example.appspot.com/rest/app",
method: "POST",
data: {"foo":"bar"}
}).then(function successCallback(response) {
// this callback will be called asynchronously
// when the response is available
$scope.d...
Android SQLite DB When to Close
...t. this will prevent multiple manipulations to the database and save your application from a potential crash
so in your singleton, you might have a method like this to get your single SQLiteOpenHelper object:
private SQLiteDatabase db;
private MyDBOpenHelper mySingletonHelperField;
public MyDBOpe...
Where does the iPhone Simulator store its data?
I have a SQLite DB that I'm using to store app data, and I could do with taking a look inside it to debug a problem I'm having - but where does the iPhone Simulator store its data, typically?
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Difference between add(), replace(), and addToBackStack()
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I think one approach could be to process the event in the top most fragment and call cancelEventDelivery() after processing is complete. You can find more about the cancelEventDelivery() methods here github.com/greenrobot/EventBus/blob/m...
When to call activity context OR application context?
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getApplicationContext() is almost always wrong. Ms. Hackborn (among others) have been very explicit that you only use getApplicationContext() when you know why you are using getApplicationContext() and only when you need to use ...