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Why doesn't Haskell's Prelude.read return a Maybe?
...at returns Maybe. You can make one yourself:
readMaybe :: (Read a) => String -> Maybe a
readMaybe s = case reads s of
[(x, "")] -> Just x
_ -> Nothing
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Semantic-ui vs Bootstrap [closed]
...ns of the top 5 browsers) With that in mind, it seems a wasted effort (and extra code) to support that far back.
– Nicholas Summers
Sep 18 '14 at 20:57
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Make .gitignore ignore everything except a few files
...rom Git's version
control. I have a project (LaTeX) that generates lots of extra files (.auth,
.dvi, .pdf, logs, etc) as it runs, but I don't want those to be tracked.
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Are there pronounceable names for common Haskell operators? [closed]
...r
main = translateLn <$> getLine >>= putStrLn
translateLn :: String -> String
translateLn = unwords . map t . words
t :: String -> String -- t(ranslate)
-- historical accurate naming
t "=" = "is equal too" -- The Whetstone of Witte - Robert Recorde (1557)
-- proposed namings
-...
make div's height expand with its content
...verflow:hidden;
height:1%;
to your main div. Eliminates the need for the extra <br /> for the clear.
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Getting reference to the top-most view/window in iOS application
...n. Which view is top visible on any given point?
@implementation UIView (Extra)
- (UIView *)findTopMostViewForPoint:(CGPoint)point
{
for(int i = self.subviews.count - 1; i >= 0; i--)
{
UIView *subview = [self.subviews objectAtIndex:i];
if(!subview.hidden && CGRe...
What does the leading semicolon in JavaScript libraries do?
...hat a third file contains this dirty fix. Why can not the concatenator add extra semicolons between files in the result?
– Dávid Horváth
Dec 3 '15 at 12:06
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What does T&& (double ampersand) mean in C++11?
...'t distinguish between a copy of a non-mutable lvalue and an rvalue.
std::string s;
std::string another(s); // calls std::string(const std::string&);
std::string more(std::string(s)); // calls std::string(const std::string&);
In C++0x, this is not the case.
std::string s;
std::...
Open file in a relative location in Python
...the parent folder of the current folder did not worked..the .. is added as string..
– M. Paul
Jan 31 '19 at 8:00
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A potentially dangerous Request.Form value was detected from the client
...erently dangerous. It's only dangerous in a specific context: when writing strings that haven't been encoded to HTML output (because of XSS).
In other contexts different sub-strings are dangerous, for example, if you write an user-provided URL into a link, the sub-string "javascript:" may be dangero...