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When should TaskCompletionSource be used?
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In my experiences, TaskCompletionSource is great for wrapping old asynchronous patterns to the modern async/await pattern.
The most beneficial example I can think of is when working with Socket. It has the old APM and EAP patte...
Java executors: how to be notified, without blocking, when a task completes?
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In Java 8 you can use CompletableFuture. Here's an example I had in my code where I'm using it to fetch users from my user service, map them to my view objects and then update my view or show an error dialog (this is a GUI application):
CompletableFuture.supplyAsync(
userSer...
Python recursive folder read
...:
print('--\nroot = ' + root)
list_file_path = os.path.join(root, 'my-directory-list.txt')
print('list_file_path = ' + list_file_path)
with open(list_file_path, 'wb') as list_file:
for subdir in subdirs:
print('\t- subdirectory ' + subdir)
for filename i...
The Guava library: What are its most useful and/or hidden features? [closed]
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I could certainly go on, but I have to get to work. =) Anyway, despite my having listed some things I like here, the fact is that everything in Guava is useful in some situation or another. Much of it is useful very often. As you use it, you'll discover more uses. Not using it will feel a bit li...
How to pass anonymous types as parameters?
...class for this anonymous type. That'd be the most sensible thing to do in my opinion. But if you really don't want to, you could use dynamics:
public void LogEmployees (IEnumerable<dynamic> list)
{
foreach (dynamic item in list)
{
string name = item.Name;
int id = it...
bundle install returns “Could not locate Gemfile”
...ndicate the path to the gemfile in the same command e.g.
BUNDLE_GEMFILE="MyProject/Gemfile.ios" bundle install
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(HTML) Download a PDF file instead of opening them in browser when clicked
...necessary, but often there's better solutions from a UX perspective. Also, my answer is correct. You can not do what you want to do with HTML (which is what the question was asking). It's as server-side solution.
– DA.
Jul 27 '12 at 3:15
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Execute AsyncTask several times
In my Activity I use a class which extends from AsyncTask and a parameter which is an instance of that AsyncTask. When I call mInstanceOfAT.execute("") everything is fine.
But the app crash when I press an update button which calls again the AsyncTask(In case the network job didnt work). Cause the...
Draw a perfect circle from user's touch
...they touch with their fingers. Very simple App I did as exercise way back.
My little cousin took the liberty of drawing things with his finger with my iPad on this App (Kids drawings: circle, lines, etc, whatever came to his mind).
Then he started to draw circles and then he asked me to make it "goo...
Suppressing “warning CS4014: Because this call is not awaited, execution of the current method conti
...nguage feature that I just cannot remember. It's like there's a _ = ... in my brain.
– Marc L.
Mar 14 '18 at 14:29
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