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Why can tuples contain mutable items?
...s are Python's way of collecting heterogeneous pieces of information under one roof. For example,
s = ('www.python.org', 80)
brings together a string and a number so that the host/port pair can be passed around as a socket, a composite object. Viewed in that light, it is perfectly reasonable to ...
Codesign error: Provisioning profile cannot be found after deleting expired profile
...so I removed it from the iPod and from iTunes. When I chose a new profile (one with an * in the identifier), I now get an error:
...
How to find patterns across multiple lines using grep?
...)*efg' test.txt
where -M, --multiline allow patterns to match more than one line
There is a newer pcre2grep also. Both are provided by the PCRE project.
pcre2grep is available for Mac OS X via Mac Ports as part of port pcre2:
% sudo port install pcre2
and via Homebrew as:
% brew install pc...
Get just the filename from a path in a Bash script [duplicate]
... may as well find a method that can strip off the path and the extension.
One way to do that (and this is a bash-only solution, needing no other executables):
pax> a=/tmp/xx/file.tar.gz
pax> xpath=${a%/*}
pax> xbase=${a##*/}
pax> xfext=${xbase##*.}
pax> xpref=${xbase%.*}
pax> ec...
SQL Server: Is it possible to insert into two tables at the same time?
...
In one statement: No.
In one transaction: Yes
BEGIN TRANSACTION
DECLARE @DataID int;
INSERT INTO DataTable (Column1 ...) VALUES (....);
SELECT @DataID = scope_identity();
INSERT INTO LinkTable VALUES (@ObjectID, @D...
How to determine if a number is a prime with regex?
...if n == 3.
.?
The first part of the regex says, "any character, zero or one times". So basically, is there zero or one character-- or, per what I mentioned above, n == 0 || n == 1. If we have the match, then return the negation of that. This corresponds with the fact that zero and one are NOT pri...
What does threadsafe mean?
...”
“…and the need for a shared piece of data to be accessed by only one
thread at any given time.”
Definitely worth a read!
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Why should I not wrap every block in “try”-“catch”?
.../catch are more or less free when there isn't any exception. When there is one propagating it does consumes time each times it's thrown and caught, so a chain of try/catch that only rethrow isn't costless.
– Matthieu M.
Apr 29 '10 at 13:41
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method overloading vs optional parameter in C# 4.0 [duplicate]
which one is better? at a glance optional parameter seems better (less code, less XML documentation, etc), but why do most MSDN library classes use overloading instead of optional parameters?
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In C#, how to check if a TCP port is available?
... edited Jan 7 '13 at 10:59
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answered Feb 20 '09 at 17:17
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