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Difference between ProcessBuilder and Runtime.exec()
I'm trying to execute an external command from java code, but there's a difference I've noticed between Runtime.getRuntime().exec(...) and new ProcessBuilder(...).start() .
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What's so bad about Template Haskell?
...ond where it will appear; you can have a value of type Exp, but you don't know if it is an expression that represents a [Char] or a (a -> (forall b . b -> c)) or whatever. TH would be more reliable if one could express that a function may only generate expressions of a certain type, or only fu...
How to resize an image with OpenCV2.0 and Python2.6
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If you wish to use CV2, you need to use the resize function.
For example, this will resize both axes by half:
small = cv2.resize(image, (0,0), fx=0.5, fy=0.5)
and this will resize the image to have 100 cols (width) and 5...
nginx upload client_max_body_size issue
...onnection, the client sends data to the closed socket, causing a TCP RST.
If your HTTP client supports it, the best way to handle this is to send an Expect: 100-Continue header. Nginx supports this correctly as of 1.2.7, and will reply with a 413 Request Entity Too Large response rather than 100 C...
Streaming a video file to an html5 video player with Node.js so that the video controls continue to
..."),
path = require("path");
http.createServer(function (req, res) {
if (req.url != "/movie.mp4") {
res.writeHead(200, { "Content-Type": "text/html" });
res.end('<video src="http://localhost:8888/movie.mp4" controls></video>');
} else {
var file = path.resolve(__dirna...
How to change the default charset of a MySQL table?
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If you want to change the table default character set and all character columns to a new character set, use a statement like this:
ALTER TABLE tbl_name CONVERT TO CHARACTER SET charset_name;
So query will be:
ALTER TAB...
Does a `+` in a URL scheme/host/path represent a space?
...' .. 'z', // alpha
'0' .. '9', // digit
'-', '.', '_', '~':; // rest of unreserved characters as defined in the RFC-3986, p.2.3
else
begin
Result[I] := '%';
Insert('00', Result, I + 1);
Result[I + 1] := HexCharArrA[(Byte(C) shr 4...
Adding 'serial' to existing column in Postgres
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If there is a chance that the target table was created by a different user, you'd need to do ALTER TABLE foo OWNER TO current_user; first.
– DKroot
Apr 6 '18 at 14:47
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Getting individual colors from a color map in matplotlib
If you have a Colormap cmap , for example:
4 Answers
4
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.NET data structures: ArrayList, List, HashTable, Dictionary, SortedList, SortedDictionary — Speed,
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If at all possible, use generics. This includes:
List instead of ArrayList
Dictionary instead of HashTable
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