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How to get the instance id from within an ec2 instance?
... with the digits only. (Backslash + parentheses tell sed to remember a substring, which is recalled with \1.) I found this a little easier to read--the only backslashes are those required by sed: EC2_REGION="$(echo "$EC2_AVAIL_ZONE" | sed -e 's:\([0-9][0-9]*\)[a-z]*$:\1:')".
–...
Is it possible to modify variable in python that is in outer, but not global, scope?
... would mean grandparent <module> aka global
The second argument is a string or code object you want to execute in the given scope
You can also call it without arguments for interactive shell inside your program
The long answer
This is more complicated. Seapie works by editing the frames i...
Understanding the main method of python [duplicate]
...n a file is being executed then __name__ is set to "__main__" (the literal string: __main__).
This is almost always used to separate the portion of code which should be executed from the portions of code which define functionality. So Python code often contains a line like:
#!/usr/bin/env python
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MySQL Select Query - Get only first 10 characters of a value
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SELECT SUBSTRING(subject, 1, 10) FROM tbl
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Composite Key with EF 4.1 Code First
...der = 1)]
[Required(ErrorMessage = "A ActivityName is required")]
[StringLength(50, ErrorMessage = "Activity Name must not exceed 50 characters")]
public string ActivityName { get; set; }
}
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How can I delete a newline if it is the last character in a file?
...a trailing \n due to setting the output-record separator (OFS) to an empty string.
If you want a verbose, but fast and robust solution that truly edits in-place (as opposed to creating a temp. file that then replaces the original), consider jrockway's Perl script.
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SQL Server Escape an Underscore
...ERE CHARINDEX('_', thingyoursearching) < 1..where I am trying to ignore strings with an underscore in them. If you want to find things that have an underscore, just flip it around:
WHERE CHARINDEX('_', thingyoursearching) > 0
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How do I include a file over 2 directories back?
... since it has only disadvantages. Or (the third alternative) you could use string manipulation to extract parent directory from the (expanded) current path but once again this doesn’t have any advantages to using relative paths.
– Konrad Rudolph
Aug 20 '12 at...
How to loop through all the files in a directory in c # .net?
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string[] files =
Directory.GetFiles(txtPath.Text, "*ProfileHandler.cs", SearchOption.AllDirectories);
That last parameter effects exactly what you're referring to. Set it to AllDirectories for every file including in s...
How to add edge labels in Graphviz?
...orth being aware of the labeltooltip attribute. This allows an additional string to be attached to the label of an edge. This is easier for a user than the tooltip attribute, as it can be fiddly to hover directly on an edge. The syntax is as follows:
digraph G {
a -> b [label=" a to b" labe...