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Python: Select subset from list based on index set
... @PreludeAndFugue: If there are two equivalent options it's good to know which one is faster, and use that one right away.
– fuenfundachtzig
Jul 5 '10 at 11:42
1
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Create a tar.xz in one command
... the tar -cJf syntax on MacOS? Just curious, because I was doing that just now and it seemed to be working.
– Lo-Tan
Sep 14 '18 at 18:20
2
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How to read XML using XPath in Java
...ith this code:
expr.evaluate(doc, XPathConstants.STRING);
If you don't know how many URLs are in a given node, then you should rather do something like this:
XPathExpression expr = xpath.compile("/howto/topic[@name='PowerBuilder']/url");
NodeList nl = (NodeList) expr.evaluate(doc, XPathConstants...
Are Java static calls more or less expensive than non-static calls?
... However, In the case static methods fit the design well, it is useful to know they are at least as fast, if not faster than instance methods and should not be ruled out on a performance basis.
– Will
Oct 21 '17 at 13:11
...
assign multiple variables to the same value in Javascript
...would attach to global which is the global context for that environment).
Now you could first declare all your variables and then assign them to the same value and you could avoid the problem.
var moveUp, moveDown, moveLeft, moveRight, mouseDown, touchDown;
moveUp = moveDown = moveLeft = moveRight...
.gitignore file, where should I put it in my xcode project?
...ory and activate it:
git config --global core.excludesfile ~/.gitignore
Now you can put whatever files are generated by your development tools into your .gitignore file.
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PDO's query vs execute
... sid INT IDENTITY PRIMARY KEY,
id INT,
val VARCHAR(100)
);
And now a basic timed test for performance metrics.
$logs = [];
$test = function (String $type, Int $count = 3000) use ($pdo, &$logs) {
$start = microtime(true);
$i = 0;
while ($i < $count) {
$sql = "...
ScalaTest in sbt: is there a way to run a single test without tags?
I know that a single test can be ran by running, in sbt,
5 Answers
5
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Which data type for latitude and longitude?
...
If you do not need all the functionality PostGIS offers, Postgres (nowadays) offers an extension module called earthdistance. It uses the point or cube data type depending on your accuracy needs for distance calculations.
You can now use the earth_box function to -for example- query for poi...
What does jQuery.fn mean?
...is.each(function(){
$(this).css("color","blue");
});
return this;
};
Now you can use those against a class like this:
$('.blue').blueBorder().blueText();
(I know this is best done with css such as applying different class names, but please keep in mind this is just a demo to show the concep...