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What should I do if the current ASP.NET session is null?
... the HttpApplication.AcquireRequestState event.
Your code runs in an IHttpHandler, that does not specify either the IRequiresSessionState or IReadOnlySessionState interface.
If you only have code in pages, you won't run into this. Most of my ASP .NET code uses Session without checking for null repe...
Database design for audit logging
...d that is used by a few wiki platforms is to separate the identifying data and the content you're auditing. It adds complexity, but you end up with an audit trail of complete records, not just listings of fields that were edited that you then have to mash up to give the user an idea of what the old...
convert an enum to another type of enum
I have an enum of for example ' Gender ' ( Male =0 , Female =1 ) and I have another enum from a service which has its own Gender enum ( Male =0 , Female =1, Unknown =2 )
...
Is there a difference between “==” and “is”?
...> b == a
True
# Make a new copy of list `a` via the slice operator,
# and assign it to variable `b`
>>> b = a[:]
>>> b is a
False
>>> b == a
True
In your case, the second test only works because Python caches small integer objects, which is an implementation detail...
Why would one use nested classes in C++?
Can someone please point me towards some nice resources for understanding and using nested classes? I have some material like Programming Principles and things like this IBM Knowledge Center - Nested Classes
...
How to un-escape a backslash-escaped string?
...on literal structures: strings, numbers, tuples, lists,
dicts, booleans, and None. (END)
Like this:
>>> import ast
>>> escaped_str = '"Hello,\\nworld!"'
>>> print ast.literal_eval(escaped_str)
Hello,
world!
...
How does the Java 'for each' loop work?
...or any object that implements the Iterable interface.
Also, if the right-hand side of the for (:) idiom is an array rather than an Iterable object, the internal code uses an int index counter and checks against array.length instead. See the Java Language Specification.
...
How to disable HTML links
...> which I have to disable. This works on IE but not working in Firefox and Chrome.
Structure is - Link inside a <td> . I cannot add any container in the <td> (like div/span)
...
Generating a list of which files changed between hg versions
...
hg status --rev x:y
where x and y are desired revision numbers (or tag or branch names).
If you are using the terminal in windows add hg status --rev x:y> your-file.txt to save the list to a file.
...
Change a Rails application to production
...
How to setup and run a Rails 4 app in Production mode (step-by-step) using Apache and Phusion Passenger:
Normally you would be able to enter your Rails project, rails s, and get a development version of your app at http://something.com:3...