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Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
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How do you want the error message in the following case look like?
AnyObject.GetANullObject().ToString();
private object GetANullObject()
{
return null;
}
No variable names to report here!
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how do I use UIScrollView in Interface Builder?
... Deployment Target is 5.1)
When I first did this I received the following error:
Illegal Configuration:
Size type user defined runtime attributes with Xcode versions prior to 4.3
MainStoryboard.storyboard
If you too get this error it is simple to fix: select the Story...
How to write the Fibonacci Sequence?
...beginning of the function but of course there is a billin an done lines of error. Where should I be putting it? Thx
– SD.
Feb 3 '09 at 21:12
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How to get the last element of a slice?
... I do like the -1 from Python, although it often lead to hard-to-debug errors.
– weberc2
Mar 20 '14 at 15:14
12
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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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