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PostgreSQL: How to pass parameters from command line?
...11-12'" -c 'select * from table_1 where id = :v1;' will generate a syntax error. However, if bash is your shell, you might try: psql -v v1=12 -v v2="'Hello World'" -v v3="'2010-11-12'" <<< 'select * from table_1 where id = :v1;' to good effect.
– malcook
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Java Round up Any Number
I can't seem to find the answer I'm looking for regarding a simple question: how do I round up any number to the nearest int ?
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Add MIME mapping in web.config for IIS Express
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Fwiw, How to add mime types with IIS7 Web.config and 404 errors in IIS7 for embedded .woff font files. Voila, though a year late to the party.
– ruffin
Mar 12 '13 at 15:13
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Casting to string in JavaScript
... do behave differently when the value is null.
null.toString() throws an error - Cannot call method 'toString' of null
String(null) returns - "null"
null + "" also returns - "null"
Very similar behaviour happens if value is undefined (see jbabey's answer).
Other than that, there is a negligible...
What differences, if any, between C++03 and C++11 can be detected at run-time?
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This returns true for MSVC 2005 onwards, and a compile error in MSVC 2003.
– Anthony Williams
Jun 24 '11 at 20:20
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How to implement Enums in Ruby?
...practice test-driven design, which will find not just typos but also logic errors.
– emk
Aug 20 '09 at 20:14
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How to add a default include path for GCC in Linux?
I'd like gcc to include files from $HOME/include in addition to the usual include directories, but there doesn't seem to be an analogue to $LD_LIBRARY_PATH .
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What is the difference between syntax and semantics in programming languages?
...ement has no meaning (according to the C language rules) and thus it is an error even though the statement is syntactically correct.
If x is a pointer to some data type, the meaning of the statement is to "add sizeof(some data type) to the value at address x and store the result into the location at...
Creating an empty Pandas DataFrame, then filling it?
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Writing to an Excel spreadsheet
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I was assuming it used xlwt too, but getting an openpyxl error. For anyone else who gets confused by this - it's all in the filetype you want. The pandas (0.12) docs say "Files with a .xls extension will be written using xlwt and those with a .xlsx extension will be written using o...