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How does one remove an image in Docker?
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Ah, i didn't know about the command for "remove all existing container". Had written own: docker ps -a | sed -r 's/^(\w+).*/\1/g' | sed -r 's/^CONTAINER//' | sed -r 's/^(\w+)/docker rm \1/g' | awk 'system($0)' Thanks !
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How to select rows that have current day's timestamp?
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See the difference: SQL-Fiddle Notice the FILTERED = 25 in the 2nd query.
– ypercubeᵀᴹ
Feb 8 '13 at 12:28
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Simple way to transpose columns and rows in SQL?
...r, Eric value, 'Eric' name
from yourTable
) src
group by name
See SQL Fiddle with Demo
The UNION ALL performs the UNPIVOT of the data by transforming the columns Paul, John, Tim, Eric into separate rows. Then you apply the aggregate function sum() with the case statement to get the new columns ...
How to uncompress a tar.gz in another directory
... specific directory, you can simply cd into your target directory prior to calling tar; then you will have to give a complete path to your archive, of course. You can do this in a scoping subshell to avoid influencing the surrounding script:
mkdir foo
(cd foo; tar -xzf ../bar.tar.gz) # instead of...
Animate scroll to ID on page load
Im tring to animate the scroll to a particular ID on page load. I have done lots of research and came across this:
6 Answer...
Objective-C: Extract filename from path string
...lastPathComponent] stringByDeletingPathExtension];
The lastPathComponent call will return thefile.ext, and the stringByDeletingPathExtension will remove the extension suffix from the end.
share
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Java NIO FileChannel versus FileOutputstream performance / usefulness
...otential areas for investigating:
The buffer size. The algorithm you basically have is
copy from disk to buffer
copy from buffer to disk
My own experience has been that this buffer size is ripe for tuning. I've settled on 4KB for one part of my application, 256KB for another. I suspect your ...
Best way to use html5 data attributes with rails content_tag helper?
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A helper's not a bad idea but seems a bit of an overkill for what's essentially me being fusy about syntax. I suppose there's nothing built into rails which is what I was hoping for. I'll just use this:
content_tag(:div, "Some Text", :id => ...
XDocument or XmlDocument
...urprised none of the answers so far mentions the fact that XmlDocument provides no line information, while XDocument does (through the IXmlLineInfo interface).
This can be a critical feature in some cases (for example if you want to report errors in an XML, or keep track of where elements are defin...
Condition within JOIN or WHERE
...SELECT *
FROM Customers c
INNER JOIN CustomerAccounts ca
ON ca.CustomerID = c.CustomerID
AND c.State = 'NY'
INNER JOIN Accounts a
ON ca.AccountID = a.AccountID
AND a.Status = 1
Write:
SELECT *
FROM Customers c
INNER JOIN CustomerAccounts ca
ON ca.CustomerID = c.CustomerID
INNE...