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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 are the most common non-BMP Unicode characters in actual use? [closed]
... the most common non-BMP characters by far. ????, otherwise known as U+1F602 FACE WITH TEARS OF JOY, is the most common one on Twitter's public stream. It occurs more frequently than the tilde!
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How to use Namespaces in Swift?
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edited Nov 17 '18 at 12:03
answered Jun 4 '14 at 8:47
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How to disallow temporaries
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edited Apr 20 '14 at 17:24
Faisal Vali
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Why can't stash be applied to the working directory?
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edited Jan 26 '17 at 11:07
glems2
322 bronze badges
answered May 9 '12 at 1:57
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How do I get logs/details of ansible-playbook module executions?
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edited Apr 3 '16 at 2:31
techraf
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ans...
Compare floats in php
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237
If you do it like this they should be the same. But note that a characteristic of floating-poi...
Leading zeros for Int in Swift
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Assuming you want a field length of 2 with leading zeros you'd do this:
import Foundation
for myInt in 1 ... 3 {
print(String(format: "%02d", myInt))
}
output:
01
02
03
This requires import Foundation so technically it is not a part of the Swift la...
Looping over a list in Python
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200
Try this,
x in mylist is better and more readable than x in mylist[:] and your len(x) should ...
How to replace a character with a newline in Emacs?
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itsjeyd
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answered Mar 4 '09 at 23:52
Jonathan ArkellJonatha...