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C# - Keyword usage virtual+override vs. new
What are differences between declaring a method in a base type " virtual " and then overriding it in a child type using the " override " keyword as opposed to simply using the " new " keyword when declaring the matching method in the child type?
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Why does Oracle 9i treat an empty string as NULL?
I know that it does consider ' ' as NULL , but that doesn't do much to tell me why this is the case. As I understand the SQL specifications, ' ' is not the same as NULL -- one is a valid datum, and the other is indicating the absence of that same information.
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Test if a property is available on a dynamic variable
My situation is very simple. Somewhere in my code I have this:
14 Answers
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What does 'synchronized' mean?
I have some questions regarding the usage and significance of the synchronized keyword.
17 Answers
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Add default value of datetime field in SQL Server to a timestamp
I've got a table that collects forms submitted from our website, but for some reason, when they created the table, they didn't put a timestamp in the table. I want it to enter the exact date and time that the record was entered.
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What does (function($) {})(jQuery); mean?
I am just starting out with writing jQuery plugins. I wrote three small plugins but I have been simply copying the line into all my plugins without actually knowing what it means. Can someone tell me a little more about these? Perhaps an explanation will come in handy someday when writing a framewor...
Differences between lodash and underscore [closed]
Why would someone prefer either the lodash.js or underscore.js utility library over the other?
12 Answers
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How to delete duplicates on a MySQL table?
I need to DELETE duplicated rows for specified sid on a MySQL table.
25 Answers
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Switch statement: must default be the last case?
Consider the following switch statement:
10 Answers
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Security of REST authentication schemes
Background:
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