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Check for column name in a SqlDataReader object
...ns for control logic like in some other answers is considered bad practice and has performance costs. It also sends false positives to the profiler of # exceptions thrown and god help anyone setting their debugger to break on exceptions thrown.
GetSchemaTable() is also another suggestion in many an...
Creating a new directory in C
... directory; if that directory does not exist then it creates the directory and a log file inside of it, but if the directory already exists, then it just creates a new log file in that folder.
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log4net argument to LogManager.GetLogger
...the reason. I do it that way so I don't have to worry about the class name and can just copy and paste boiler plate code in a new class.
For the official answer, see: How do I get the fully-qualified name of a class in a static block? at the log4net faq
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Are string.Equals() and == operator really same? [duplicate]
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Two differences:
Equals is polymorphic (i.e. it can be overridden, and the implementation used will depend on the execution-time type of the target object), whereas the implementation of == used is determined based on the compile-time types of the objects:
// Avoid getting confused by inter...
Java JUnit: The method X is ambiguous for type Y
I had some tests working fine. Then, I moved it to a different package, and am now getting errors. Here is the code:
3 Answ...
How can I make a JPA OneToOne relation lazy
...eloping, we noticed that a view was particularly slow. I profiled the view and noticed that there was one query executed by hibernate which took 10 seconds even if there only were two object in the database to fetch. All OneToMany and ManyToMany relations were lazy so that wasn't the problem. Wh...
In C/C++ what's the simplest way to reverse the order of bits in a byte?
...e, I'm curious as to what is the "simplest" for a developer to implement. And by reversing I mean:
35 Answers
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Should I use Java's String.format() if performance is important?
We have to build Strings all the time for log output and so on. Over the JDK versions we have learned when to use StringBuffer (many appends, thread safe) and StringBuilder (many appends, non-thread-safe).
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How to do a batch insert in MySQL
...e. What is the best way to do this in a query? Should I just make a loop and insert one record per iteration? Or is there a better way?
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gdb: how to print the current line or find the current line number?
list commands prints a set of lines, but I need one single line, where I am and where an error has probably occurred.
5 An...