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Postgres - FATAL: database files are incompatible with server
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If you recently upgraded to 11 or 12 from 10.x you can run the below command to upgrade your postgres data directory retaining all data:
brew postgresql-upgrade-database
The above command is taken from the output of brew info postgres
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How to get last items of a list in Python?
...hon CLI interpreter:
>>> a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
>>> a[-9:]
[4, 5, 6, 7, 8, 9, 10, 11, 12]
the important line is a[-9:]
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How to write inline if statement for print?
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edited Jan 12 '15 at 9:26
answered Aug 9 '12 at 9:47
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Global access to Rake DSL methods is deprecated
...s Antonio
– user779350
Jun 1 '11 at 12:20
1
I agree with Antonio - when I said to remove rake 0.9...
Regular expression for matching HH:MM time format
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Regular Expressions for Time
HH:MM 12-hour format, optional leading 0
/^(0?[1-9]|1[0-2]):[0-5][0-9]\d$/
HH:MM 12-hour format, optional leading 0, mandatory meridiems (AM/PM)
/((1[0-2]|0?[1-9]):([0-5][0-9]) ?([AaPp][Mm]))/
HH:MM 24-hour with leading 0
/^(0...
Best way to get child nodes
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edited Sep 12 '13 at 8:25
answered Apr 30 '12 at 9:52
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How do I query using fields inside the new PostgreSQL JSON datatype?
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answered May 12 '12 at 3:10
Erwin BrandstetterErwin Brandstetter
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Returning anonymous type in C#
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answered Apr 9 '12 at 12:42
abatishchevabatishchev
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Can't install Ruby under Lion with RVM – GCC issues
...ative solutions. Try the simple “Edit 3” solution first.
Ruby 1.9.3-p125 and later have official support for clang, so if you are installing such a version you should not need GCC. If you’re installing an older version of Ruby, read on.
To compile Ruby with GCC, you need a non-LLVM version ...
All permutations of a Windows license key
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Peter Mortensen
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answered Jan 30 '13 at 14:36
bikeshedderbikeshe...