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Why is the minimalist, example Haskell quicksort not a “true” quicksort?
...trates (1), but not (2). How (2) is done may not be obvious if you don't already know the technique!
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SQL Server: Query fast, but slow from procedure
...oils down to using "local Variables" in your stored procedure queries, but read the original for more understanding, it's a great write up. e.g.
Slow way:
CREATE PROCEDURE GetOrderForCustomers(@CustID varchar(20))
AS
BEGIN
SELECT *
FROM orders
WHERE customerid = @CustID
END
Fast way...
View the Task's activity stack
...adb shell dumpsys activity activities" You can see shorter message and can read more easily about the activity stack. :)
– cmcromance
Jul 18 '14 at 7:50
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Assembly code vs Machine code vs Object code?
...nect everything together.
Assembly code is plain-text and (somewhat) human read-able source code that mostly has a direct 1:1 analog with machine instructions. This is accomplished using mnemonics for the actual instructions, registers, or other resources. Examples include JMP and MULT for the CPU's...
How to generate a random int in C?
...od idea to emphasize that srand() should only be called once. Also, in a threaded application, you might want to make sure that the generator's state is stored per thread, and seed the generator once for each thread.
– RBerteig
May 5 '09 at 0:37
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Create Directory if it doesn't exist with Ruby
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@TWiStErRob: Read my comments again, I said nothing about fileutils or mkdir_p, all I'm saying is that system command, arg1, arg2, ... is better than system command_with_arguments.
– mu is too short
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Difference between filter and filter_by in SQLAlchemy
... the actual column object - which usually will require one to type (and to read) at least a redundant class name. So, if one wants to filter by equality, it is rather convenient.
– jsbueno
May 18 '16 at 14:32
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Get records with max value for each group of grouped SQL results
...ds extracted from b. They are the oldest persons from each group.
Further readings
This solution and many others are explained in the book SQL Antipatterns: Avoiding the Pitfalls of Database Programming
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Android: How to stretch an image to the screen width while maintaining aspect ratio?
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I just read the source code for ImageView and it is basically impossible without using the subclassing solutions in this thread. In ImageView.onMeasure we get to these lines:
// Get the max possible width given our constrai...
Can you provide some examples of why it is hard to parse XML and HTML with a regex? [closed]
... The HTML examples make use of a rarely known feature: shorttags. Read more at w3.org/QA/2007/10/shorttags.html
– netvope
Dec 15 '10 at 3:59
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