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Object reference not set to an instance of an object.Why doesn't .NET show which object is `null`?
...
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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Catch multiple exceptions at once?
...turally. Right?
private void TestMethod ()
{
Action<Exception> errorHandler = ( ex ) => {
// write to a log, whatever...
};
try
{
// try some stuff
}
catch ( FormatException ex ) { errorHandler ( ex ); }
catch ( OverflowException ex ) { errorH...
Python nested functions variable scoping [duplicate]
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When I run your code I get this error:
UnboundLocalError: local variable '_total' referenced before assignment
This problem is caused by this line:
_total += PRICE_RANGES[key][0]
The documentation about Scopes and Namespaces says this:
A special ...
Capture HTML Canvas as gif/jpg/png/pdf?
...s-domain resources in rendering your canvas, you will encounter a security error when you try to use the toDataUrl method.
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Accessing nested JavaScript objects and arays by string path
...le.net/alnitak/hEsys/
EDIT some have noticed that this code will throw an error if passed a string where the left-most indexes don't correspond to a correctly nested entry within the object. This is a valid concern, but IMHO best addressed with a try / catch block when calling, rather than having...
Why does Maven have such a bad rep? [closed]
...your build process dependent on your network connection.
Maven has useless error messages. Compare ant's "Target x does not exist in the project y" to mvn's "Invalid task 'run': you must specify a valid lifecycle phase, or a goal in the format plugin:goal or pluginGroupId:pluginArtifactId:pluginVers...
How to pull a random record using Django's ORM?
...the count changes in between, it might be possible to get an out of bounds error.
– Nelo Mitranim
Sep 12 '15 at 9:37
2
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Clearing purchases from iOS in-app purchase sandbox for a test user
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couldn't get this to work. I'm getting a build error. I copied all the files in the zip into my project and replaced all the #import <StoreKit/StoreKit.h> with #define ILSimReplaceRealStoreKit 1 #import "ILSimStoreKit.h"
– Jay Q.
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wkhtmltopdf: cannot connect to X server
...//www.google.com test.pdf
If it works, then you are done. If you get the error "Cannot connect to X server" then continue to number 7.
We need to run it headless on a 'virtual' x server. We will do this with a package called xvfb.
sudo apt-get install xvfb
We need to write a little shell script...
How do I update a Linq to SQL dbml file?
...d tried 1a and 1c without 1b and was getting 'Specified cast is not valid' errors when performing a simple select on a view. Including 1b fixed it for me
– tomfumb
Nov 29 '11 at 19:40
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