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Does using final for variables in Java improve garbage collection?
...ts are short-lived, the GC is more aggressive about freeing recent garbage from the young generation. If an object survives a collection cycle of the young generation, it gets moved into the old generation (sometimes referred to as the "tenured generation"), which is processed less frequently.
So, ...
How to detect if a function is called as constructor?
... a new instance of* x when calling x as a constructor is indistinguishable from a pre-existing instance of x passed as this when calling x as a function, unless you assign a property to every new object created by x as it is constructed:
function x(y) {
var isConstructor = false;
if (this i...
Why is sed not recognizing \t as a tab?
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Called from a script, that won't work: tabs would be ignored by sh. For example, the following code from a shell script will add $TEXT_TO_ADD, without prepending it by a tabulation: sed "${LINE}a\\ $TEXT_TO_ADD " $FIL...
Click event doesn't work on dynamically generated elements [duplicate]
...n().
Delegated events have the advantage that they can process events from descendant elements that are added to the document at a later time.
Source
Here's what you're looking for:
var counter = 0;
$("button").click(function() {
$("h2").append("<p class='test'>click me " ...
How can I correctly prefix a word with “a” and “an”?
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And if a noun is missing from this output, you can certainly fall back to the simple rule engine.
– John Fisher
Aug 17 '09 at 15:06
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Nodejs send file in response
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Here's an example program that will send myfile.mp3 by streaming it from disk (that is, it doesn't read the whole file into memory before sending the file). The server listens on port 2000.
[Update] As mentioned by @Aftershock in the comments, util.pump is gone and was replaced with a method...
Exotic architectures the standards committees care about
...for special handling of denormals in any context other than conversions to/from other types. Too bad C's printf messed everything up.
– supercat
Apr 30 '15 at 16:32
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When to use symbols instead of strings in Ruby?
... saving memory. So every time the interpreter reads :my_key it can take it from memory instead of instantiate it again. This is less expensive than initializing a new string every time.
You can get a list all symbols that are already instantiated with the command Symbol.all_symbols:
symbols_count...
How to get div height to auto-adjust to background size?
...tly do you mean? Once the image has downloaded, it is presumably cached. From that point, any other requests are based on a local copy. So, no. It is not downloaded twice. But, it is loaded twice.
– Tmac
Oct 22 '15 at 2:34
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Stop Mongoose from creating _id property for sub-document array items
If you have subdocument arrays, Mongoose automatically creates ids for each one. Example:
6 Answers
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