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SQL: How to properly check if a record exists
While reading some SQL Tuning-related documentation, I found this:
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What is difference between MVC, MVP & MVVM design pattern in terms of coding c#
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Great Explanation from the link : http://geekswithblogs.net/dlussier/archive/2009/11/21/136454.aspx
Let's First look at MVC
The input is directed at the Controller first, not the view. That input might be coming from a user interacting with a page, but it c...
What does the ^ operator do in Java?
What function does the ^ (caret) operator serve in Java?
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Conditional import of modules in Python
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When should I use C++14 automatic return type deduction?
With GCC 4.8.0 released, we have a compiler that supports automatic return type deduction, part of C++14. With -std=c++1y , I can do this:
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Are parameters in strings.xml possible? [duplicate]
...ring.welcome_messages), username, mailCount);
If you wish more look at: http://developer.android.com/intl/pt-br/guide/topics/resources/string-resource.html#FormattingAndStyling
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Preferred Java way to ping an HTTP URL for availability
I need a monitor class that regularly checks whether a given HTTP URL is available. I can take care of the "regularly" part using the Spring TaskExecutor abstraction, so that's not the topic here. The question is: What is the preferred way to ping a URL in java?
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NULL values inside NOT IN clause
This issue came up when I got different records counts for what I thought were identical queries one using a not in where constraint and the other a left join . The table in the not in constraint had one null value (bad data) which caused that query to return a count of 0 records. I sort of u...
What is uintptr_t data type
What is uintptr_t and what can it be used for?
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Is std::unique_ptr required to know the full definition of T?
I have some code in a header that looks like this:
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