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Memory footprint of Haskell data types
...ge conventions)
Rule of thumb: a constructor costs one word for a header, and one word for each field. Exception: a constructor with no fields (like Nothing or True) takes no space, because GHC creates a single instance of these constructors and shares it amongst all uses.
A word is 4 bytes on a ...
How do I uniquely identify computers visiting my web site?
...wsers
are subject to “device fingerprinting” via the version and configuration information that they will transmit to websites upon request. We
implemented one possible fingerprinting algorithm, and collected these
fingerprints from a large sample of browsers that visited our test...
Why does Math.round(0.49999999999999994) return 1?
...
Summary
In Java 6 (and presumably earlier), round(x) is implemented as floor(x+0.5).1 This is a specification bug, for precisely this one pathological case.2 Java 7 no longer mandates this broken implementation.3
The problem
0.5+0.49999999...
What's so wrong about using GC.Collect()?
Although I do understand the serious implications of playing with this function (or at least that's what I think), I fail to see why it's becoming one of these things that respectable programmers wouldn't ever use, even those who don't even know what it is for.
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Update a record without first querying?
Lets say I query the database and load a list of items. Then I open one of the items in a detail view form, and instead of re-querying the item out of the database, I create an instance of the item from the datasource in the list.
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Select data from date range between two dates
I have a table Named Product_Sales and it holds data like this
19 Answers
19
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How to find all links / pages on a website
Is it possible to find all the pages and links on ANY given website? I'd like to enter a URL and produce a directory tree of all links from that site?
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minimize app to system tray
I have a Windows forms app powered by C# and Visual Studio 2010.
9 Answers
9
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How to get a DOM Element from a JQuery Selector
... ($(this).is(":checked")) {
// do stuff
}
});
is more "jquery'ish" and (imho) more concise. What if you wanted to number them?
$(":checkbox").each(function(i, elem) {
$(elem).data("index", i);
});
$(":checkbox").click(function() {
if ($(this).is(":checked") && $(this).data("inde...
What exactly is the meaning of an API? [closed]
I've searched for the definition of an API in a programming language and I am still finding it hard to understand.
13 Answe...