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How to cancel a Task in await?
...urce source = new CancellationTokenSource();
source.CancelAfter(TimeSpan.FromSeconds(1));
Task<int> task = Task.Run(() => slowFunc(1, 2, source.Token), source.Token);
// (A canceled task will raise an exception when awaited).
await task;
}
private int slowFunc(int a, int b, Cancel...
std::function and std::bind: what are they, and when should they be used?
...mber function pointer for later use
{}
//this operator call comes from the bind method
_Ret operator()(_Class *_P, _arg1 arg1, _arg2 arg2, _arg3 arg3) const
{
return ((_P->*m_Ptr)(arg1,arg2,arg3));
}
private:
_Ret (_Class::*m_Ptr)(_arg1,_arg2,_arg3);// method poin...
Convert numpy array to tuple
...e long cuts, here is another way
tuple(tuple(a_m.tolist()) for a_m in a )
from numpy import array
a = array([[1, 2],
[3, 4]])
tuple(tuple(a_m.tolist()) for a_m in a )
The output is
((1, 2), (3, 4))
Note just (tuple(a_m.tolist()) for a_m in a ) will give a generator expresssion.
Sort...
Find the extension of a filename in Ruby
...
Use extname method from File class
File.extname("test.rb") #=> ".rb"
Also you may need basename method
File.basename("/home/gumby/work/ruby.rb", ".rb") #=> "ruby"
...
File content into unix variable with newlines
...
Bash -ge 4 has the mapfile builtin to read lines from the standard input into an array variable.
help mapfile
mapfile < file.txt lines
printf "%s" "${lines[@]}"
mapfile -t < file.txt lines # strip trailing newlines
printf "%s\n" "${lines[@]}"
See also:
http...
ASP.NET MVC: Unit testing controllers that use UrlHelper
...
A modified implementation from eu-ge-ne. This one returns a generated link based on the routes defined in the application. eu-ge-ne's example always returned a fixed response. The approach below will allow you to test that the correct action/controlle...
How do you get AngularJS to bind to the title attribute of an A tag?
...me appear in the tooltip of a thumbnail.
Browsers do not create a tooltip from "ng-title" or "ng-attr-title."
5 Answers
...
Rails render partial with block
...d/modal',
locals: { heading: heading, block: block }
)
end
Call it from any view:
<%= modal_for('My Title') do |t| %>
<p>Here is some content to be rendered inside the partial</p>
<% end %>
...
Maven Run Project
...lass-name</exec.mainClass>
</properties>
2. Run Command
Now from the terminal, trigger the following command:
mvn clean compile exec:java
NOTE You can pass further arguments via -Dexec.args="xxx" flag.
shar...
How to perform Callbacks in Objective-C
...LConnectionDelegate. They are usually used to show Downloading many images from server asynchronously etc.
NSNotifications : NotificationCenter is one of features of Objective C which used to notify many receiptants at time when event occur.
Blocks : Blocks are more commonly used in Objective C prog...