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Idiomatic way to wait for multiple callbacks in Node.js
...hronous.
What is the idiomatic way to wait for all operations to finish in order to
know when the temp file can be deleted?
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How can I debug a HTTP POST in Chrome?
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MySQL - Get row number on select
...query to:
SET @rank=0;
SELECT @rank:=@rank+1 AS rank, itemID, COUNT(*) as ordercount
FROM orders
GROUP BY itemID
ORDER BY ordercount DESC;
SELECT @rank;
The last select is your count.
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Fast Linux File Count for a large number of files
...bypass the alias option which might slow a little bit and -f to avoid file ordering.
ls without -f is twice slower than find/perl
except if ls is used with -f, it seems to be the same time:
[user@server logs]$ time /bin/ls . | wc -l
42916
real 0m0.109s
user 0m0.070s
sys 0m0.044s
I also...
Optimise PostgreSQL for fast testing
...n PostgreSQL. This setting pretty much tells PostgreSQL not to bother with ordered writes or any of that other nasty data-integrity-protection and crash-safety stuff, giving it permission to totally trash your data if you lose power or have an OS crash.
Needless to say, you should never enable fsyn...
Visual Studio 2013 IntelliSense stops working for ASP.NET MVC5 Controllers
... was a 3rd party visual studio extension which was causing the problem. In order to find out that extension, I removed all extensions and then, added the extensions one by one and stopped where I found the culprit extension that was taking my sleep away :).
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Can local storage ever be considered secure? [closed]
... develop a web application that will function offline for long periods. In order for this to be viable I cannot avoid saving sensitive data (personal data but not the kind of data you would only store hashed) in local storage.
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Eclipse: Error “.. overlaps the location of another project..” when trying to create new project
...oldish)
Click OK
Once the project rebuilds, everything should be back in order.
(This was written when Eclipse Indigo was in vogue, and there may be changes as Google updates their tools to cover corner cases.)
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How to verify if a file exists in a batch file?
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PostgreSQL DISTINCT ON with different ORDER BY
...equal. [...] Note that the "first row" of each set is unpredictable unless ORDER BY is used to ensure that the desired row appears first. [...] The DISTINCT ON expression(s) must match the leftmost ORDER BY expression(s).
Official documentation
So you'll have to add the address_id to the order by...