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What does $_ mean in PowerShell?
...he current value in the pipe line, which is called $PSItem in Powershell 3 and newer.
1,2,3 | %{ write-host $_ }
or
1,2,3 | %{ write-host $PSItem }
For example in the above code the %{} block is called for every value in the array. The $_ or $PSItem variable will contain the current value...
ExecutorService, how to wait for all tasks to finish
... if asked.) This avoids all the manual shutdown, awaitTermination, etc... and allows you to reuse this ExecutorService neatly for multiple cycles, if desired.
There are a few related questions on SO:
How to wait for all threads to finish
Return values from java threads
invokeAll() not willing to...
How to remove from a map while iterating it?
...
The standard associative-container erase idiom:
for (auto it = m.cbegin(); it != m.cend() /* not hoisted */; /* no increment */)
{
if (must_delete)
{
m.erase(it++); // or "it = m.erase(it)" since C++11
}
else
{
...
What should I do if the current ASP.NET session is null?
... the HttpApplication.AcquireRequestState event.
Your code runs in an IHttpHandler, that does not specify either the IRequiresSessionState or IReadOnlySessionState interface.
If you only have code in pages, you won't run into this. Most of my ASP .NET code uses Session without checking for null repe...
Is LINQ to SQL Dead or Alive?
...t they can do is stop adding features to it. That doesn't prevent the thousands of developers out there that are already using L2S from extending it and improving it. Some core areas are tricky to touch but they're solid already and the missing designer features can easily be bolted on.
2) One of t...
How can I prevent Visual Studio 2013 from closing my IIS Express app when I end debugging?
Previously in 2012, if I debugged in Chrome (for example), and then stopped the debugger, the website would remain running in IIS Express. This no longer seems to be the case in 2013.
...
How to delete a workspace in Eclipse?
...le directory. This will delete all the projects but also the Eclipse cache and settings for the workspace. These are kept in the .metadata folder of an Eclipse workspace. Note that you can configure Eclipse to use project folders that are outside the workspace folder as well, so you may want to veri...
Dealing with “Xerces hell” in Java/Maven?
... users are "touched" by this problem at some point. Unfortunately, understanding the problem requires a bit of knowledge about the history of Xerces...
...
seek() function?
...mentation regarding the seek() function in python (after having to use it) and although it helped me I am still a bit confused on the actual meaning of what it does, any explanations are much appreciated, thank you.
...
Format decimal for percentage values?
...
Looking at here big difference is like US and France type. If above varies by culture, is there a culture-independent P formatting?
– bonCodigo
May 18 '14 at 1:36
...