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Maximum single-sell profit

...nd the largest sum of a contiguous subset of that list. You can trivially convert this problem to that problem by taking the profit or loss between consecutive days. So you would transform a list of stock prices, e.g. [5, 6, 7, 4, 2] into a list of gains/losses, e.g., [1, 1, -3, -2]. The subsequenc...
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data.table vs dplyr: can one do something well the other can't or does poorly?

... remember is for it to return a list so that each element of the list gets converted to a column. In dplyr, cannot do that. Have to resort to do() depending on how sure you are as to whether your function would always return a single value. And it is quite slow. Once again, data.table's synta...
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Git and Mercurial - Compare and Contrast

...erge by a series of two-parent merges, this might cause complications when converting between Mercurial and Git repositories. As far as I know Mercurial doesn't have equivalent of annotated tags (tag objects) from Git. A special case of annotated tags are signed tags (with PGP / GPG signature); equi...
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What optimizations can GHC be expected to perform reliably?

...worker/wrapper transformation is to do a tight loop on a simple structure, converting to and from that structure at the ends. For example, take this function, which calculates the factorial of a number. factorial :: Int -> Int factorial 0 = 1 factorial n = n * factorial (n - 1) Using the defin...
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Reference: mod_rewrite, URL rewriting and “pretty links” explained

...sass-cache.php?old_fn_base=$1 RewriteRule ^images/([\w\.\-]+)\.gif$ png-converter.php?load_from=$2 Other common uses are remapping obsolete .html paths to newer .php handlers, or just aliasing directory names only for individual (actual/real) files. Ping-Pong (redirects and rewrites in unison) ...
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List of All Locales and Their Short Codes?

...al data sources, and you need to specify a different encoding (if manually convert them via iconv is more work than just changing the encoding) – StormByte Apr 28 '17 at 17:06 ...
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Remove accents/diacritics in a string in JavaScript

... Considering that '\u00DF'.toUpperCase() evaluates to 'SS', I think converting \u00DF to ss is the right move. The post being a community wiki, perhaps @CodingYourLife would contribute the change you've made? – user3717023 Jul 1 '15 at 15:29 ...
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How does Google Instant work?

... Converting the first value from key u in Daniel Vassallo's answer's Ajax response gives a URL, which then leads to some (invalid) JSON. I'm not sure what this bit is for yet. The d gives some HTML, which gets inserted into t...