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Error to use a section registered as allowDefinition='MachineToApplication' beyond application level
The top line in all of my aspx pages in my /portal/ directory has this error message, and I know it's a common one. I have googled this error message to no end, and I see a lot of posts telling me to configure the /portal/ folder as an application in IIS (which I have), and more posts telling me I ...
Difference between ObservableCollection and BindingList
...se I've used both to notify for any add/delete change in Source, but I actually do not know when to prefer one over the other.
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Choose between ExecutorService's submit and ExecutorService's execute
...g the task to be invoked. The default UncaughtExceptionHandler, which typically prints the Throwable stack trace to System.err, will be invoked if no custom handler has been installed.
On the other hand, a Throwable generated by a task queued with submit() will bind the Throwable to the Future that...
Does every Javascript function have to return a value?
...ow level, the return is translated into some sort of jump. If a function really returned nothing at all, there would be no way of knowing what and when to call the next function, or to call event handlers and the like.
So to recap: No, a JS function needn't return anything as far as your code goes....
How to use LINQ to select object with minimum or maximum property value
...use LINQ to query a list of Person objects for the one with the earliest/smallest DateOfBirth value.
15 Answers
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Excluding directories in os.walk
...y, given that the intent is to exclude directories, at the cost of O(n**2) vs O(n) time.
(Making a copy of the dirs list with list(dirs) is required for correct execution)
# exclude = set([...])
for root, dirs, files in os.walk(top, topdown=True):
[dirs.remove(d) for d in list(dirs) if d in e...
(413) Request Entity Too Large | uploadReadAheadSize
...cture.
As long as the file size of this picture is less then approx. 48KB, all goes well. But if I'm trying to upload a larger picture, the WCF service returns an error: (413) Request Entity Too Large.
So ofcourse I've spent 3 hours Googling the error message and every topic I've seen about this s...
Database development mistakes made by application developers [closed]
...ng appropriate indices
This is a relatively easy one but still it happens all the time. Foreign keys should have indexes on them. If you're using a field in a WHERE you should (probably) have an index on it. Such indexes should often cover multiple columns based on the queries you need to execut...
Override intranet compatibility mode IE8
...lt;meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
Basically if you trigger conditional IE comments before the <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> statement then you will be forced into compatibility mode in an Intranet environment if you are runni...
How to speed up insertion performance in PostgreSQL
...u've batched your work into big transactions, though.
INSERT or COPY in parallel from several connections. How many depends on your hardware's disk subsystem; as a rule of thumb, you want one connection per physical hard drive if using direct attached storage.
Set a high checkpoint_segments value an...