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Solutions for INSERT OR UPDATE on SQL Server
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don't forget about transactions. Performance is good, but simple (IF EXISTS..) approach is very dangerous.
When multiple threads will try to perform Insert-or-update you can easily
get primary key violation.
Solutions provided by @Beau Crawford &...
Why java.util.Optional is not Serializable, how to serialize the object with such fields
...bject with enums. The other case is where class has fields of java.util.Optional class. In this case the following exception is thrown: java.io.NotSerializableException: java.util.Optional
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Do you continue development in a branch or in the trunk? [closed]
...runk what you want to put in that stable release. It would already be all mixed in together in the trunk.
The one case in particular that I would say to do all development in the trunk, is when you are starting a new project. There may be other cases too depending on your situation.
By the way...
How do I convert a String to an InputStream in Java?
...am of bytes that represent your original string encoded as UTF-8.
For versions of Java less than 7, replace StandardCharsets.UTF_8 with "UTF-8".
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jQuery UI slider Touch & Drag/Drop support on Mobile devices
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works like a charme with rails5 android and ios devices
– Stef Hej
Jan 16 '17 at 19:26
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How to make exe files from a node.js app?
...node.exe and your scripts.
Depending on your script, you also have the option to port it to JSDB, which supports an easy way to create executables by simply appending resources to it.
A third quasi-solution is to keep node somewhere like C:\utils and add this folder to your PATH environment variab...
C++, Free-Store vs Heap
... another. This designation is meant to drive home the point that you NEVER mix "new" and "delete" with "malloc", "realloc", or "free" (or bit level sets for that matter).
During interviews it's good to say that "new and delete use the free store, malloc and free use the heap; new and delete call the...
Reading Excel files from C#
...g.Format("{0}\\fileNameHere", Directory.GetCurrentDirectory());
var connectionString = string.Format("Provider=Microsoft.Jet.OLEDB.4.0; data source={0}; Extended Properties=Excel 8.0;", fileName);
var adapter = new OleDbDataAdapter("SELECT * FROM [workSheetNameHere$]", connectionString);
var ds = n...
What is the difference between declarative and imperative programming? [closed]
...f it's odd, add it to a result collection."
In many cases, code will be a mixture of both designs, too, so it's not always black-and-white.
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How do you set, clear, and toggle a single bit?
...lue in a stable/portable way except bit-at-a-time. It's also impossible to mix DIY bit arithmetic with bitfields, for example making a mask that tests for several bits at once. You can of course use && and hope the compiler will optimize it correctly...
– R.. GitHub STO...