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Parallel.ForEach vs Task.Run and Task.WhenAll
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The first version will synchronously block the calling thread (and run some of the tasks on it).
If it's a UI thread, this will freeze the UI.
The second version will run the tasks asynchronously in the thread pool and release the calling thread until they're done.
There are also diffe...
How can I tell Rails to use RSpec instead of test-unit when creating a new Rails app?
I have test-unit installed and rspec installed (along with -core , -expectations , -mocks and -rails version 2.6.x). When I run the command rails new foo , it uses test-unit to generate the test stub files instead of rspec .
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Is String.Format as efficient as StringBuilder
...would run more quickly using .Append(). But it's a guess, try benchmarking and/or profiling the two to get a proper comparison.
This chap, Jerry Dixon, did some benchmarking:
http://jdixon.dotnetdevelopersjournal.com/string_concatenation_stringbuilder_and_stringformat.htm
Updated:
Sadly the ...
Custom toast on Android: a simple example
I'm new to Android programming. What is a simple example showing a custom toast notification on Android?
17 Answers
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What is the meaning of erb?
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erb stands for "Embedded RuBy". A .html.erb or .erb.html file is HTML with Ruby code embedded in; Rails will evaluate the Ruby to add content to the file dynamically, and will output a "pure" HTML file for rendering.
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Using mixins vs components for code reuse in Facebook React
I'm beginning to use Facebook React in a Backbone project and so far it's going really well.
However, I noticed some duplication creeping into my React code.
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efficient circular buffer?
...e nice batteries included way. Operations for the circular buffer are O(1) and as you say the extra overhead is in C, so should still be quite fast
– John La Rooy
Nov 11 '10 at 9:38
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Why doesn't C# support the return of references?
...o the "managed reference to variable" types are not convertible to object, and therefore may not be used as type arguments to generic types or methods.)
Commenter "RPM1984" for some reason asked for a citation for this fact. RPM1984 I encourage you to read the CLI specification Partition I Section...
What's a good rate limiting algorithm?
...hon. I am trying to implement a rate-limiting queue for a Python IRC bot, and it partially works, but if someone triggers less messages than the limit (e.g., rate limit is 5 messages per 8 seconds, and the person triggers only 4), and the next trigger is over the 8 seconds (e.g., 16 seconds later),...
How can I find the latitude and longitude from address?
...s the "java.io.IOException service not available"
– Kandha
Aug 26 '10 at 13:02
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You need the rig...