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Raise warning in Python without interrupting program
...ning, you should be using warnings module. By raising it you're generating error, rather than warning.
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Preferred Java way to ping an HTTP URL for availability
...to account that some poor webapps or homegrown servers may return HTTP 405 error for a HEAD (i.e. not available, not implemented, not allowed) while a GET works perfectly fine. Using GET is more reliable in case you intend to verify links/resources not domains/hosts.
Testing the server for ava...
How to debug a bash script? [closed]
...on-zero exit status. This is useful if your script attempts to handle all error cases and where a failure to do so should be trapped.
set -x was mentioned above and is certainly the most useful of all the debugging methods.
set -n might also be useful if you want to check your script for syntax e...
Visual C++: How to disable specific linker warnings?
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I don't think /ignore exists. The errors are still listed, and /ignore is not documented in MSDN. I'm trying to disable 4075 for "warning LNK4075: ignoring '/EDITANDCONTINUE' due to '/INCREMENTAL:NO' specification."
– Nick Desjardins
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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...
What are the differences in die() and exit() in PHP?
... Even though they do the same thing, I usually reserve die for error related stops and exit for all other scenarios. It just seems to flow better when reading the code.
– nextgentech
Jan 11 '14 at 4:29
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Linux equivalent of the Mac OS X “open” command [closed]
...en &>/dev/null' yields approximately the desired behavior (although errors from xdg-open itself (as opposed to just the launched program) would also be silenced, which is undesirable).
– Max Nanasy
Nov 16 '12 at 10:04
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Case conventions on element names?
... and not for the XSLT parser. However since this will often not produce an error, using 'lowercase with hyphens' as a standard is asking for trouble, IMHO.
Some pertinent examples:
<a>1</a><b>1</b>
<xsl:value-of select="a+b"/>
outputs 2, as expected
<a>1</a&...
Common MySQL fields and their appropriate data types
... da5idda5id
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Any gotchas using unicode_literals in Python 2.6?
..."one.py", line 5, in <module>
print name + two.name
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 4: ordinal not in range(128)
In this example, two.name is an utf-8 encoded string (not unicode) since it did not import unicode_literals, and one.name is an unicode st...