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DatabaseError: current transaction is aborted, commands ignored until end of transaction block?
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This is what postgres does when a query produces an error and you try to run another query without first rolling back the transaction. (You might think of it as a safety feature, to keep you from corrupting your data.)
To fix this, you'll want to figure out where in the code that ...
URLWithString: returns nil
...can probably remove the escaping of the localisationName since it will be handled by the escaping of the whole string.
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Instantiating a generic class in Java [duplicate]
...ested in - any way of specifying the appropriate Class<T> reference) and keep that value as a field:
public class Test {
public static void main(String[] args) throws IllegalAccessException,
InstantiationException {
Generic<Bar> x = new Generic<>(Bar.class)...
Display an array in a readable/hierarchical format
... I like this answer too but the OP only wanted the Strings to print, and not the array indices (it seems like). And only 1-dimensional data. I usually only do this to check a recordset of data before I continue with a solution, so this solution works way better for stuff like that.
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Warning :-Presenting view controllers on detached view controllers is discouraged
...oller presentViewController:viewController animated:YES completion:nil];
And then in your modal view controller, when everything is finished, you can just call :
[self dismissViewControllerAnimated:YES completion:nil];
s...
How to use Morgan logger?
...uld do in Java with log4j (if you know java) where we instantiate a Logger and say log 'this'.
Then I dug in morgan code, turns out it is not that type of a logger, it is for automated logging of requests, responses and related data. When added as a middleware to an express/connect app, by default ...
How can I implement a tree in Python?
...cation
pre-order tree iteration
post-order tree iteration
resolve relative and absolute node paths
walking from one node to an other.
tree rendering (see example above)
node attach/detach hookups
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R and version control for the solo data analyst
... raised:
Backup: I have a backup system already in place.
Yes, and so do I. However, there are some questions to consider regarding the appropriateness of relying on a general purpose backup system to adequately track important and active files relating to your work. On the performance ...
How can I tell Moq to return a Task?
...k(). You can simply return a Task with the desired values using .Returns() and Task.FromResult, e.g.:
MyType someValue=...;
mock.Setup(arg=>arg.DoSomethingAsync())
.Returns(Task.FromResult(someValue));
Update 2014-06-22
Moq 4.2 has two new extension methods to assist with this.
m...
Int or Number DataType for DataAnnotation validation attribute
...ecimal), "0", "9999.99", ErrorMessage = "Value for {0} must be between {1} and {2}")] throw an exception. However, if I do [Range(typeof(decimal), "0.1", "9999.99", ErrorMessage = "Value for {0} must be between {1} and {2}")] , the error message will work correctly. 0 vs 0.1 , makes no sense. bug ma...