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How to tag an older commit in Git?
...ommit'
git push --tags origin master
where tag is set to the desired tag string, and commit to the commit hash.
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In SQL, how can you “group by” in ranges?
...
In postgres (where || is the string concatenation operator):
select (score/10)*10 || '-' || (score/10)*10+9 as scorerange, count(*)
from scores
group by score/10
order by 1
gives:
scorerange | count
------------+-------
0-9 | 11
10-19 ...
Output array to CSV in Ruby
... "of", "CSV", "data"]
csv << ["another", "row"]
# ...
end
To a string:
require 'csv'
csv_string = CSV.generate do |csv|
csv << ["row", "of", "CSV", "data"]
csv << ["another", "row"]
# ...
end
Here's the current documentation on CSV: http://ruby-doc.org/stdlib/libdoc/...
WPF Command Line
...command line stuff
if (e.Args.Length > 0)
{
string parameter = e.Args[0].ToString();
WriteToConsole(parameter);
}
}
Shutdown();
}
public void WriteToConsole(string message)
{
AttachConsole(-1);
Console.WriteLine(message);
}
Alter ...
MySQL - length() vs char_length()
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LENGTH() returns the length of the string measured in bytes.
CHAR_LENGTH() returns the length of the string measured in characters.
This is especially relevant for Unicode, in which most characters are encoded in two bytes. Or UTF-8, where the number of by...
How to sort an ArrayList in Java [duplicate]
...ering is a fundamental part of the nature of the objects (like integers or strings), whereas by using a Comparator, you're saying that in this specific context, you want them ordered in a certain way.
– Tom Anderson
Aug 26 '13 at 10:32
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Is it possible to append to innerHTML without destroying descendants' event listeners?
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I created my markup to insert as a string since it's less code and easier to read than working with the fancy dom stuff.
Then I made it innerHTML of a temporary element just so I could take the one and only child of that element and attach to the body.
var h...
How to access maven.build.timestamp for resource filtering
...estamp, but in different formats (for example a file name and a build time string), how can I use maven.build.timestamp.format multiple times?
– Daniel Alder
Apr 29 '14 at 11:25
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How to print the current Stack Trace in .NET without any exception?
...nostics.StackTrace is to use System.Environment.StackTrace which returns a string-representation of the stacktrace.
Another useful option is to use the $CALLER and $CALLSTACK debugging variables in Visual Studio since this can be enabled run-time without rebuilding the application.
...
JNI converting jstring to char *
I have passed a URL string from Java to C code as jstring data type through the use of JNI. And my library method needs a char * as url.
...