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Why do pthreads’ condition variable functions require a mutex?
... condition variable; it is to protect the predicate data, but I think you know that from reading your comment that followed that statement. You can signal a condition variable legally, and fully supported by implementations, post-unlock of the mutex wrapping the predicate, and in fact you'll will re...
Conveniently Declaring Compile-Time Strings in C++
...nything to match the elegance of Scott Schurr's str_const presented at C++ Now 2012. It does require constexpr though.
Here's how you can use it, and what it can do:
int
main()
{
constexpr str_const my_string = "Hello, world!";
static_assert(my_string.size() == 13, "");
static_assert(...
How to select multiple rows filled with constants?
...connect by clause follow this link : removed URL because oraclebin site is now malicious.
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Awaiting multiple Tasks with different results
...eTask;
var car = await carTask;
You can also use Task.Result (since you know by this point they have all completed successfully). However, I recommend using await because it's clearly correct, while Result can cause problems in other scenarios.
...
What are the effects of exceptions on performance in Java?
... class is loaded by the VM) and it makes throw not quite as slow. I don't know which JVM uses this new, better technique...
...but are you writing in Java so your code later on only runs on one JVM on one specific system? Since if it may ever run on any other platform or any other JVM version (pos...
What does “abstract over” mean?
... (implicit ff: Foldable[F], m: Monoid[B]) =
ff.foldMap(as, f)
Now we have something quite general. The method mapReduce will fold any F[A] given that we can prove that F is foldable and that A is a monoid or can be mapped into one. For example:
case class Sum(value: Int)
case class Pro...
How to deserialize xml to object [duplicate]
... {
ExceptionLogger.WriteExceptionToConsole(ex, DateTime.Now);
}
return returnObject;
}
Then you'd call it like this:
MyObjType MyObj = DeserializeXMLFileToObject<MyObjType>(FilePath);
...
How to remove duplicate values from an array in PHP
...e:
$array = array(1, 2, 2, 3);
$array = array_unique($array); // Array is now (1, 2, 3)
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Is there a command to list all Unix group names? [closed]
I know there is the /etc/group file that lists all users groups.
3 Answers
3
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How do CSS triangles work?
... this:
But there's no need for the top border, so set its width to 0px. Now our border-bottom of 200px will make our triangle 200px tall.
.triangle {
border-color: yellow blue red green;
border-style: solid;
border-width: 0px 200px 200px 200px;
height: 0px;
width: 0px;
}
an...