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Nokogiri installation fails -libxml2 is missing
...g' error. can you tell me more about the build tool chain installation. b'cos i didnt find much help on it.
– Rohit A.
Jun 8 '11 at 11:41
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How to grep and replace
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On OS X 10.10 Terminal, a proper extension string to parameter -i is required. For example, find /path/to/files -type f -exec sed -i "" "s/oldstring/new string/g" {} \; Anyway, providing empty string still creates a backup file ...
How do I create a parameterized SQL query? Why Should I?
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'Connection string for mysql
Public SQLSource As String = "Server=123.456.789.123;userid=someuser;password=somesecurepassword;database=somedefaultdatabase;"
'database connection classes
Private DBcon As New MySqlConnection
Private SQLcmd As MySqlCommand
Public DBDA As New ...
When and why will a compiler initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete?
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A quick summary of what Microsoft's compilers use for various bits of unowned/uninitialized memory when compiled for debug mode (support may vary by compiler version):
Value Name Description
------ -------- --------------------...
Recursive search and replace in text files on Mac and Linux
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OS X uses a mix of BSD and GNU tools, so best always check the documentation (although I had it that less didn't even conform to the OS X manpage):
https://web.archive.org/web/20170808213955/https://developer.apple.com/lega...
How to do a non-greedy match in grep?
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Correction: In most of the regex flavors that support it, the mode that allows . to match newlines is called DOTALL or single-line mode; Ruby is the only one that calls it multiline. In the other flavors, multiline is the mode that allows t...
Python strptime() and timezones?
...mitation of that lib. >>> parser.parse("Thu, 25 Sep 2003 10:49:41,123 -0300") Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/Users/wanghq/awscli/lib/python2.7/site-packages/dateutil/parser.py", line 748, in parse return DEFAUL...
deciding among subprocess, multiprocessing, and thread in Python?
...(GIL) can be released in C code called from Python code).
I believe that most of the functions of the three modules you cite can be used in a platform-independent way. On the portability side, note that multiprocessing only comes in standard since Python 2.6 (a version for some older versions of P...
Can I do a partial revert in GIT
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gioele
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answered Apr 14 '11 at 20:43
bobDevilbobDevil
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Selecting data frame rows based on partial string match in a column
... 4 140.8 95 3.92 3.15 22.9 1 0 4 2
# Merc 280 19.2 6 167.6 123 3.92 3.44 18.3 1 0 4 4
# Merc 280C 17.8 6 167.6 123 3.92 3.44 18.9 1 0 4 4
# Merc 450SE 16.4 8 275.8 180 3.07 4.07 17.4 0 0 3 3
# Merc 450SL 17.3 8 275.8 180 3.07 3.73 17.6 0 0 3 ...