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When and why are database joins expensive?
... to respond to
Joins are just cartesian products with some lipgloss
What a load of bollocks. Restrictions are applied as early as possible, most restrictive first. You've read the theory, but you haven't understood it. Joins are treated as "cartesian products to which predicates apply" only b...
Why is there no xrange function in Python3?
...ll to the __iter__ slot isn't likely to be visible among 10000000 calls to whatever happens in the loop, but someone brought it up as a possibility.)
But it's only 30% slower. How did the OP get 2x as slow? Well, if I repeat the same tests with 32-bit Python, I get 1.58 vs. 3.12. So my guess is tha...
Asynchronous method call in Python?
...s only one alternative. This module provides lots of facilities to achieve what you want. Also it will be really easy to make a decorator from this.
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How to add a vertical Separator?
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This should do exactly what the author wanted:
<StackPanel Orientation="Horizontal">
<Separator Style="{StaticResource {x:Static ToolBar.SeparatorStyleKey}}" />
</StackPanel>
if you want a horizontal separator, ...
Separate REST JSON API server and client? [closed]
...ady to cope w/ the reality of a site experience that is 70% javascript and what that means.
I do think this is the future of all web-apps.
Some thoughts for the web front end folks (which is where all the new-ness/challenge is given this architecture):
CoffeeScript. Much easier to produce high-...
How can I change my default database in SQL Server without using MS SQL Server Management Studio?
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To find what a login's default database is: select name, default_database_name from sys.server_principals;
– DocOc
Mar 18 '19 at 18:50
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How to programmatically empty browser cache?
...rts such a "feature" will be the minute I uninstall it from my computer.
What you can do is to tell it not to cache your page, by sending the appropriate headers or using these meta tags:
<meta http-equiv='cache-control' content='no-cache'>
<meta http-equiv='expires' content='0'>
<...
Why does Go have a “goto” statement
...function small(x,z) to call instead? That way we don't have to think about what variables are accessible in the small: label. I suspect the reason is go still lacks certain types of inlining support in the compiler.
– Thomas Ahle
Jun 2 '13 at 12:11
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Generate random numbers uniformly over an entire range
...d like to see a more in-depth description of every step of that code. E.g. what is a mt19937 type?
– Apollo
Nov 23 '15 at 16:37
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Running multiple AsyncTasks at the same time — not possible?
...ost 5 AsyncTasks can run simultaneously. Unfortunately I don't remember in what version exactly they changed that.
UPDATE:
Here is what current (2012-01-27) API says on this:
When first introduced, AsyncTasks were executed serially on a single background thread. Starting with DONUT, this was c...