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What does the exclamation mark mean in a Haskell declaration?
...his 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 someone may...
Column order manipulation using col-lg-push and col-lg-pull in Twitter Bootstrap 3
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284
This answer is in three parts, see below for the official release (v3 and v4)
I couldn't even f...
What is the type of lambda when deduced with “auto” in C++11?
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147
The type of a lambda expression is unspecified.
But they are generally mere syntactic sugar f...
How to create default value for function argument in Clojure
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Brian CarperBrian Carper
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Pass parameter to controller from @Html.ActionLink MVC 4
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4 Answers
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bash HISTSIZE vs. HISTFILESIZE?
... lines.
You write 50 lines.
At the end of your 50 commands, only commands 41 to 50 are in your history list, whose size is determined by HISTSIZE=10.
You end your session.
Assuming histappend is not enabled, commands 41 to 50 are saved to your HISTFILE which now has the 10 commands it held at the ...
urllib2.HTTPError: HTTP Error 403: Forbidden
...ted&hiddDwnld=true"
hdr = {'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11',
'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8',
'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.3',
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How does RegexOptions.Compiled work?
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304
RegexOptions.Compiled instructs the regular expression engine to compile the regular expression ...