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What does the exclamation mark mean in a Haskell declaration?
... just what this means:
data Foo = Foo Int Int !Int !(Maybe Int)
f = Foo (2+2) (3+3) (4+4) (Just (5+5))
The function f above, when evaluated, will return a "thunk": that is, the code to execute to figure out its value. At that point, a Foo doesn't even exist yet, just the code.
But at some point...
What is causing this ActiveRecord::ReadOnlyRecord error?
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283
Rails 2.3.3 and lower
From the ActiveRecord CHANGELOG(v1.12.0, October 16th, 2005):
Intro...
Best way to turn an integer into a month name in c#?
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269
Try GetMonthName from DateTimeFormatInfo
http://msdn.microsoft.com/en-us/library/system.globa...
Call to getLayoutInflater() in places not in activity
...yButton = (Button) view.findViewById( R.id.myButton );
EDIT as of July 2014
Davide's answer on how to get the LayoutInflater is actually more correct than mine (which is still valid though).
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How to Get a Layout Inflater Given a Context?
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2 Answers
2
Active
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How to list commits since certain commit?
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182
git rev-list <since_hash>..HEAD
or to include the commit:
git rev-list <since_hash&g...
Rails detect if request was AJAX
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249
You can check for a header[X-Requested-With] to see if it is an AJAX request. Here is a good a...
Regex match one of two words
I have an input that can have only 2 values apple or banana . What regular expression can I use to ensure that either of the two words was submitted?
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Using Jasmine to spy on a function without an object
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answered Mar 1 '12 at 6:30
ndpndp
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What does “#define _GNU_SOURCE” imply?
...OURCE, but you should avoid defining it and instead define _POSIX_C_SOURCE=200809L or _XOPEN_SOURCE=700 when possible to ensure that your programs are portable.
In particular, the things from _GNU_SOURCE that you should never use are #2 and #4 above.
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