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Unique Key constraints for multiple columns in Entity Framework
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EF 6 and below:
First approach:
dbContext.Database.ExecuteSqlCommand(string.Format(
@"CREATE UNIQUE INDEX LX_{0} ON {0} ({1})",
"Entitys", "FirstColumn, SecondColumn"));
This approach is very fast and useful but the main problem is th...
How to extract custom header value in Web API message handler?
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Try something like this:
IEnumerable<string> headerValues = request.Headers.GetValues("MyCustomID");
var id = headerValues.FirstOrDefault();
There's also a TryGetValues method on Headers you can use if you're not always guaranteed to have access to the head...
Array to String PHP?
What is the best method for converting a PHP array into a string?
I have the variable $type which is an array of types.
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Copy a file in a sane, safe and efficient way
...; src.rdbuf();
}
This is so simple and intuitive to read it is worth the extra cost. If we were doing it a lot, better to fall back on OS calls to the file system. I am sure boost has a copy file method in its filesystem class.
There is a C method for interacting with the file system:
#include ...
When to use Spring Integration vs. Camel?
...ntegration of Kafka is pressed into the SI-way of doing things, which adds extra complexity. Other documentation, e.g. on Stackoverflow is also less plentiful and less helpful than for Camel.
My conclusion: cobbler stick to your trade - use Spring as a container and Camel as system integration fram...
SQL - Update multiple records in one query
... $sql = "";
$columns = array_keys($array[0]);
$columns_as_string = implode(', ', $columns);
$sql .= "
INSERT INTO $table
(" . $columns_as_string . ")
VALUES ";
$len = count($array);
foreach ($array as $index => $values) {
$s...
Show the progress of a Python multiprocessing pool imap_unordered call?
... @WakanTanka: It goes in the main script after it spins off the extra threads. In my original example, it goes in the "while" loop, where rs has already launched the other threads.
– MidnightLightning
Aug 24 '15 at 11:58
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How can I lookup a Java enum from its String value?
I would like to lookup an enum from its string value (or possibly any other value). I've tried the following code but it doesn't allow static in initialisers. Is there a simple way?
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Why is subtracting these two times (in 1927) giving a strange result?
If I run the following program, which parses two date strings referencing times 1 second apart and compares them:
10 Answer...
Get Insert Statement for existing row in MySQL
...blob if you have blob columns (for example a bit(1)), it would write it as string otherwise, which could result in Unknown command '\0' error when executing the INSERT.
– moffeltje
May 19 at 9:18
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