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What is the difference between Scope_Identity(), Identity(), @@Identity, and Ident_Current()?
I know Scope_Identity() , Identity() , @@Identity , and Ident_Current() all get the value of the identity column, but I would love to know the difference.
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Why is there a difference in checking null against a value in VB.NET and C#?
...r the VB.NET semantics, which in essence gives NULL the semantics "I don't know yet". Then the comparison of 5 to "I don't know yet". is naturally "I don't know yet"; ie NULL. This has the additional advantage of mirroring the behaviour of NULL in (most if not all) SQL databases. This is also a more...
What is the difference between aggregation, composition and dependency? [duplicate]
...of containment (hence the parent-child relationships).
Dependency is a weaker form of relationship and in code terms indicates that a class uses another by parameter or return type.
Dependency is a form of association.
sha...
Programmer-friendly search engine? [closed]
Google is unfriendly to searching for verbatim strings with characters like $ and #. Is there a search engine that supports searching for verbatim strings?
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How do I change permissions for a folder and all of its subfolders and files in one step in Linux?
I would like to change permissions of a folder and all its sub folders and files in one step (command) in Linux.
16 Answers...
Python loop counter in a for loop [duplicate]
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Use enumerate() like so:
def draw_menu(options, selected_index):
for counter, option in enumerate(options):
if counter == selected_index:
print " [*] %s" % option
else:
print " [ ] %s" % option
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Whether a variable is undefined [duplicate]
...if(page_name != '')
For other variables that don't come from something like jQuery.val() you would do this though:
if(typeof page_name != 'undefined')
You just have to use the typeof operator.
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How to copy files across computers using SSH and MAC OS X Terminal [closed]
...ing to copy my .profile, .rvm and .ssh folders/files to a new computer and keep getting a "not a regular file" response. I know how to use the cp and ssh commands but I'm not sure how to use them in order to transfer files from one computer to another.
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Get jQuery version from inspecting the jQuery object
...lly getting added to my page and I cannot see any reference to it in my markup. If I inspect it in my browser's console, it's there.
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g++ undefined reference to typeinfo
...ollowing error (and found the solution online, but it's not present in Stack Overflow):
17 Answers
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