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Opening the Settings app from another app
Okay, I know that there are many question about it, but they are all from many time ago.
17 Answers
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Specifying an Index (Non-Unique Key) Using JPA
... eg email as having an index using JPA annotations. We need a non-unique key on email because there are literally millions of queries on this field per day, and its a bit slow without the key.
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How to exclude a directory in find . command
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f10bitf10bit
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ASP.NET MVC Performance
I found some wild remarks that ASP.NET MVC is 30x faster than ASP.NET WebForms. What real performance difference is there, has this been measured and what are the performance benefits.
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AngularJS HTTP post to PHP and undefined
...nput in PHP, and then deserialize the JSON.
That can be achieved in PHP like this:
$postdata = file_get_contents("php://input");
$request = json_decode($postdata);
$email = $request->email;
$pass = $request->password;
Alternately, if you are heavily relying on $_POST functionality, you can...
UPDATE and REPLACE part of a string
...s the string you enter for the second argument, so the following should work:
UPDATE dbo.xxx
SET Value = REPLACE(Value, '123\', '')
WHERE ID <=4
(I also added the \ in the replace as I assume you don't need that either)
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How to support UTF-8 encoding in Eclipse
...ing for all content types.
2) Window > Preferences > General > Workspace, set Text file encoding to Other : UTF-8
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Does Foreign Key improve query performance?
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Foreign Keys are a referential integrity tool, not a performance tool. At least in SQL Server, the creation of an FK does not create an associated index, and you should create indexes on all FK fields to improve look up times.
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Getting the error “Missing $ inserted” in LaTeX
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Will VousdenWill Vousden
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Days between two dates? [duplicate]
...t;>> a-b
datetime.timedelta(7)
>>> (a-b).days
7
And it works with datetimes too — I think it rounds down to the nearest day:
>>> from datetime import datetime
>>> a = datetime(2011,11,24,0,0,0)
>>> b = datetime(2011,11,17,23,59,59)
>>> a-b
date...