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Why CancellationToken is separate from CancellationTokenSource?
...e accepted answer got the rationale exactly right. Here's the confirmation from the team who designed this feature (emphasis mine):
Two new types form the basis of the framework: A CancellationToken is
a struct that represents a ‘potential request for cancellation’. This
struct is passed...
Creating .pem file for APNS?
...
Here is what I did, From:blog.boxedice.com and "iPhone Advanced Projects" chapter 10 byJoe Pezzillo.
With the aps_developer_identity.cer in the keychain:
Launch Keychain Access from your local Mac and from the login keychain, filter by the Ce...
Pythonic way to find maximum value and its index in a list?
...iding external dependencies can be worthwhile in some cases, but an import from the standard library is a non-issue.
– Sven Marnach
Aug 7 '17 at 11:14
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Get protocol, domain, and port from URL
I need to extract the full protocol, domain, and port from a given URL. For example:
18 Answers
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console.writeline and System.out.println
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@Richard, if you hit run from an IDE, or if you launch an executable jar from a GUI.
– aioobe
May 9 '16 at 11:12
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How to get hosting Activity from a view?
...
I just pulled that source code from the MediaRouter in the official support library and so far it works fine:
private Activity getActivity() {
Context context = getContext();
while (context instanceof ContextWrapper) {
if (context instance...
Ruby, remove last N characters from a string?
What is the preferred way of removing the last n characters from a string?
13 Answers
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What's the difference between the various methods to get a Context?
...en it comes to Contexts in Android, but you can piece together a few facts from various sources.
This blog post on the official Google Android developers blog was written mostly to help address memory leaks, but provides some good information about contexts as well:
In a regular Android applica...
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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How to use R's ellipsis feature when writing your own function?
...10 and so on. That explain why [-1L] is needed: it removes expected symbol from provided arguments in ... (cause it is always a list).
As Dirk states substitute returns "parse tree the unevaluated expression".
When you call my_ellipsis_function(a=1:10,b=11:20,c=21:30) then ... "creates" a list of ar...