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Why are side-effects modeled as monads in Haskell?
...ally represent the real world, it's just a token to keep the operations in order (the "magic" is that RealWorld is GHC Haskell's only uniqueness type)
– Jeremy List
Oct 30 '15 at 7:15
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Could not find default endpoint element
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"This error can arise if you are calling the service in a class library and calling the class library from another project."
In this case you will need to include the WS configuration settings into the main projects app.config if its a winapp or web.config i...
Are Exceptions in C++ really slow
...l, mostly regardless of language, the two basic language features that are orders of magnitude slower than the rest, because they translate to calls of routines that handle complex data structures, are
exception throwing, and
dynamic memory allocation.
Happily in C++ one can often avoid both in ...
How do I disable directory browsing?
... one option. Another option is editing your apache configuration file.
In order to do so, you first need to open it with the command:
vim /etc/httpd/conf/httpd.conf
Then find the line: Options Indexes FollowSymLinks
Change that line to: Options FollowSymLinks
Lastly save and exit the file, and...
What is the difference between a weak reference and an unowned reference?
...old on the referred object (a.k.a. they don't increase the retain count in order to prevent ARC from deallocating the referred object).
But why two keywords? This distinction has to do with the fact that Optional types are built-in the Swift language. Long story short about them: optional types offe...
C# pattern to prevent an event handler hooked twice [duplicate]
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This approach is confirmed in this answer by Jon Skeet to a similar question. (Although Jon also shows how to explicitly implement the event handler itself to prevent duplicates, rather than leaving the prevention of possible duplicates up to the subscriber.)
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How do I clone a job in Jenkins?
...ether it exists.
The default tab on the front page of Jenkins should list all existing jobs, but maybe your predecessor deleted the tab. You can create a new tab listing all jobs from http://your-jenkins/newView.
share
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Checking if an Android application is running in the background
...ed. If you do not set this, your activity's methods will be called in this order: onCreate -> onStart -> onResume -> (now rotate) -> onPause -> onStop -> onDestroy -> onCreate -> onStart -> onResume. As you can see, there is no overlap (normally, two activities overlap ver...
Parse email content from quoted reply
...il from any quoted reply text that it might include. I've noticed that usually email clients will put an "On such and such date so and so wrote" or prefix the lines with an angle bracket. Unfortunately, not everyone does this. Does anyone have any idea on how to programmatically detect reply text...
Bomb dropping algorithm
...t dosent look that simple. It is true, that you can drop bomb at layer2 in order to clean, layer1, but if there are multiple solutions, they effect solutions for higher layers.
– Luka Rahne
Mar 10 '13 at 8:32
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