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How to achieve code folding effects in Emacs?

...level () (let (buffer-invisibility-spec) (save-excursion (skip-chars-forward " ") (current-column)))) ; this get called after python mode is enabled (defun my-python-outline-hook () ; outline uses this regexp to find headers. I match lines with no indent and indented "class" ...
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Highlight the difference between two strings in PHP

... Amazing! I mean the online demo with example code. Perfect char-level differences. Just WoW! :O Thank You! – Filip OvertoneSinger Rydlo Sep 22 '16 at 12:38 2 ...
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alternatives to REPLACE on a text or ntext datatype

... IF your data won't overflow 4000 characters AND you're on SQL Server 2000 or compatibility level of 8 or SQL Server 2000: UPDATE [CMS_DB_test].[dbo].[cms_HtmlText] SET Content = CAST(REPLACE(CAST(Content as NVarchar(4000)),'ABC','DEF') AS NText) WHERE Cont...
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Convert to absolute value in Objective-C

...+ programs too.) (Alas, there is no habs(short) function. Or scabs(signed char) for that matter...) Apple's and GNU's Objective-C headers also include an ABS() macro which is type-agnostic. I don't recommend using ABS() however as it is not guaranteed to be side-effect-safe. For instance, ABS(a+...
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Good Hash Function for Strings

...ng it might be a good idea to sum up the unicode values for the first five characters in the string (assuming it has five, otherwise stop where it ends). Would that be a good idea, or is it a bad one? ...
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What's the point of 'const' in the Haskell Prelude?

..., no matter the second, you can do: listOfNothings :: String -> [Maybe Char] listOfNothings = (map . const) Nothing or, more explicitly: listOfNothing st = map (const Nothing) st share | imp...
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Is there an auto increment in sqlite?

... ex1 CREATE TABLE IF NOT EXISTS room(room_id INTEGER PRIMARY KEY, name VARCHAR(25) NOT NULL, home_id VARCHAR(25) NOT NULL); INSERT INTO room(name, home_id) VALUES ('test', 'home id test'); INSERT INTO room(name, home_id) VALUES ('test 2', 'home id test 2'); SELECT * FROM room; will give: 1|t...
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Reading CSV files using C#

... Surely a char-based approach is more natural for this sort of problem than a regex. Depending on the presence of quotation marks the behavior is supposed to be different. – Casey May 9 '16 at 1:...
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How to find out what type of a Mat object is with Mat::type() in OpenCV

...eful for debugging, at least. string type2str(int type) { string r; uchar depth = type & CV_MAT_DEPTH_MASK; uchar chans = 1 + (type >> CV_CN_SHIFT); switch ( depth ) { case CV_8U: r = "8U"; break; case CV_8S: r = "8S"; break; case CV_16U: r = "16U"; break; case...
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Odd behavior when Java converts int to byte?

...ned, and byte, short, int, and long are encoded in two's complement. (The char type is unsigned, and the concept of a sign is not applicable to boolean.) In this number scheme the most significant bit specifies the sign of the number. If more bits are needed, the most significant bit ("MSB") is si...