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Sending mail from Python using SMTP
...ly:
conn.quit()
except:
sys.exit( "mail failed; %s" % "CUSTOM_ERROR" ) # give an error message
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Finding the max value of an attribute in an array of objects
...swer, however, you would like to pass an initial value or you would get an error in case the data array is empty. i.e. for an autoincrement index of objects. const max = data.reduce((prev, current) => (prev.y > current.y) ? prev : current, 1)
– juliangonzalez
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Why do loggers recommend using a logger per class?
...ImportantLogs" />
<logger name="StupidLibrary.*" minlevel="Error" writeTo="StupidLibraryLogs" />
<!-- Hide other messages from StupidLibrary -->
<logger name="StupidLibrary.*" final="true" />
<!-- Log all but hidden messages -->
<logger name="*" writeTo="Al...
Combine two data frames by rows (rbind) when they have different sets of columns
...er of dataframes (16) with different column names When I try this I get an error Error: Column ABC can't be converted from character to numeric. Is there a way to convert the columns first?
– sar
Mar 24 at 16:57
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Remove non-utf8 characters from string
... the string, by encoding the invalid bytes as UTF-8 characters. But if the errors are random, this could leave some strange symbols.
$regex = <<<'END'
/
(
(?: [\x00-\x7F] # single-byte sequences 0xxxxxxx
| [\xC0-\xDF][\x80-\xBF] # double-byte sequences 110x...
Call apply-like function on each row of dataframe with multiple arguments from each row
...of a and b. The ... allows irrelevant args to be passed without causing an error:
do.call( function(x,z,...) testFunc(x,z), df )
For non-vectorized functions, mapply will work, but you need to match the ordering of the args or explicitly name them:
mapply(testFunc, df$x, df$z)
Sometimes apply...
Does Python SciPy need BLAS?
...o the same values. If you forget the -fPIC SciPy will actually give you an error about missing symbols and will recommend this switch. The specific section of make.inc looks like this in my setup:
FORTRAN = gfortran
OPTS = -O2 -frecursive -fPIC -m64
DRVOPTS = $(OPTS)
NOOPT = -O0 -frecursi...
How to show a GUI message box from a bash script in linux?
...
I use this method to display warnings or errors within my .xinitrc while starting my xorg server. Otherwise the errors would be transparent. I also prefer this zenityover kdialog since KDE didn't start yet and GTK libs are more lightweight.
–...
hadoop No FileSystem for scheme: file
...am trying to run a simple NaiveBayesClassifer using hadoop, getting this error
18 Answers
...
Add a “hook” to all AJAX requests on a page
... // you can't tell what its destination is or call abort() without an error
// so only really good for logging that a request has happened
// I could be wrong, I hope so...
// EDIT: I suppose you could override the onreadystatechange handler though
...