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Why does MYSQL higher LIMIT offset slow the query down?
...down, since the query needs to count off the first OFFSET + LIMIT records (and take only LIMIT of them). The higher is this value, the longer the query runs.
The query cannot go right to OFFSET because, first, the records can be of different length, and, second, there can be gaps from deleted recor...
How do you save/store objects in SharedPreferences on Android?
... @rozina yes Gson is better. First of all to use serialize, the object and every object inside it needs to implement the serialize interface. This is not needed for gson. gson also works great when your object is a list of objects.
– Neville Nazerane
Jan 19...
How do I make an HTTP request in Swift?
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You can use URL, URLRequest and URLSession or NSURLConnection as you'd normally do in Objective-C. Note that for iOS 7.0 and later, URLSession is preferred.
Using URLSession
Initialize a URL object and a URLSessionDataTask from URLSession. Then run the ...
Sql Server equivalent of a COUNTIF aggregate function
...Ls were not an issue, though this can be environment dependent. You could handle nulls such as:
SELECT SUM(CASE WHEN ISNULL(myColumn,0)=1 THEN 1 ELSE 0 END)
FROM AD_CurrentView
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What is the purpose of the -m switch?
...line of the Rationale section of PEP 338 says:
Python 2.4 adds the command line switch -m to allow modules to be located using the Python module namespace for execution as scripts. The motivating examples were standard library modules such as pdb and profile, and the Python 2.4 implementation is...
What's the difference between lists enclosed by square brackets and parentheses in Python?
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for the above 'y=x' example , list and tuple behave in the same way now (verified in python3.8.5)
– Youjun Hu
Aug 15 at 9:11
add a comm...
Like Operator in Entity Framework?
...cified expression, or zeros if the pattern is not found, on all valid text and character data types
Namespace: System.Data.Objects.SqlClient
Assembly: System.Data.Entity (in System.Data.Entity.dll)
A bit of an explanation also appears in this forum thread.
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MySQL Query to select data from last week?
Hi I have a table with a date field and some other information.
I want to select all entries from the past week, (week start from Sunday).
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ProcessStartInfo hanging on “WaitForExit”? Why?
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The problem is that if you redirect StandardOutput and/or StandardError the internal buffer can become full. Whatever order you use, there can be a problem:
If you wait for the process to exit before reading StandardOutput the process can block trying to write ...
How can I check if a background image is loaded?
...http://picture.de/image.png)');
});
this will create new image in memory and use load event to detect when the src is loaded.
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