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Logging errors in ASP.NET MVC
...d Feb 20 '09 at 12:55
Andrew RimmerAndrew Rimmer
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How do I update if exists, insert if not (AKA “upsert” or “merge”) in MySQL?
...ON DUPLICATE KEY UPDATE. For example:
INSERT INTO `usage`
(`thing_id`, `times_used`, `first_time_used`)
VALUES
(4815162342, 1, NOW())
ON DUPLICATE KEY UPDATE
`times_used` = `times_used` + 1
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Error: Could not create the Java Virtual Machine Mac OSX Mavericks
...he Mac 10.9.4. I then ran the command java -v in Terminal and I get this message:
6 Answers
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How to generate string of a certain length to insert into a file to meet a file size criteria?
I have a requirement to test some load issues with regards to file size. I have a windows application written in C# which will automatically generate the files. I know the size of each file, ex. 100KB, and how many files to generate. What I need help with is how to generate a string less than or ...
How are GCC and g++ bootstrapped?
This has been bugging me for a while. How do GCC and g++ compile themselves?
1 Answer
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Why isn't there a Guid.IsNullOrEmpty() method
This keeps me wondering why Guid in .NET does not have IsNullOrEmpty() method (where empty means all zeros)
6 Answers
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Numpy: Divide each row by a vector element
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Iteration over std::vector: unsigned vs signed index variable
...rating forwards is almost identical. Just change the iterators / swap decrement by increment. You should prefer iterators. Some people tell you to use std::size_t as the index variable type. However, that is not portable. Always use the size_type typedef of the container (While you could get away wi...
Map and Reduce in .NET
... reduce functions. C# 3.5 and Linq already has it albeit under different names.
Map is Select:
Enumerable.Range(1, 10).Select(x => x + 2);
Reduce is Aggregate:
Enumerable.Range(1, 10).Aggregate(0, (acc, x) => acc + x);
Filter is Where:
Enumerable.Range(1, 10).Where(x => x % 2 == 0);
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Avoiding SQL injection without parameters
We are having another discussion here at work about using parametrized sql queries in our code. We have two sides in the discussion: Me and some others that say we should always use parameters to safeguard against sql injections and the other guys that don't think it is necessary. Instead they want ...