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Most efficient way to store thousand telephone numbers
...k of memory: instead of 2^m - 1 counts, we need only ceil(99999/2^k). That means the formula becomes
17 + ceil(99999/2^k) * 10 + 1000 * k
which amazingly enough attains its minimum 10997 for both k = 9 and k = 10, or ceil(10997/8) = 1375 bytes.
If we want to know whether a certain phone number is...
Difference between shared objects (.so), static libraries (.a), and DLL's (.so)?
...imple explanation. If a function is declared "Internal" in a DLL does that mean it can't be called from outside the library?
– Mike
Mar 7 '13 at 16:03
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How do write IF ELSE statement in a MySQL query
...uery, however I have been unable to get it to work properly: "SELECT *, N.id (CASE WHEN (N.action == 2 AND N.state == 0) THEN 1 ELSE 0 END) AS N.state FROM notifications N, posts P WHERE N.userID='$session' AND N.uniqueID=P.id AND P.state='0' AND N.action='1' ORDER BY N.date DESC"
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Do you put unit tests in same project or another project?
...e like unit tests, and there are plenty of downsides. Shipping unit tests means you are dealing with more bits that need to be distributed. Unit tests also have a separate set of dependencies. Now you are shipping NUnit, Rhino or Moq, etc. That is even more bit bloat. Placing unit tests into a ...
Abstraction VS Information Hiding VS Encapsulation
...ion of things." — [Wirfs-Brock et al, 1990]
"As a process, encapsulation means the act of enclosing one or more items within a […] container. Encapsulation, as an entity, refers to a package or an enclosure that holds (contains, encloses) one or more items."
"If encapsulation was 'the same thing...
Converting HTML string into DOM elements? [duplicate]
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You can use a DOMParser, like so:
var xmlString = "<div id='foo'><a href='#'>Link</a><span></span></div>";
var doc = new DOMParser().parseFromString(xmlString, "text/xml");
console.log(doc.firstChild.innerHTML); // => <a href="#">Link......
What is a WeakHashMap and when to use it? [duplicate]
...d with the object, I agree, but I would hardly call a WeakHashMap cache by means of classic cache, since a cache IMHO should remove data depending on the value or a specific expiration policy rather than the key.
– Ivaylo Slavov
Jun 23 '11 at 13:04
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Get the index of the nth occurrence of a string?
...having to do it in about 13 years of Java and C# development. That doesn't mean I've really never had to do it - but just not often enough to remember.
– Jon Skeet
Oct 9 '08 at 11:01
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What is difference between monolithic and micro kernel?
...caused their poor performance.
Adding a new feature to a monolithic system means recompiling the whole kernel or the corresponding kernel module (for modular monolithic kernels), whereas with microkernels you can add new features or patches without recompiling.
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Changing CSS Values with Javascript
...'s easy to set inline CSS values with javascript. If I want to change the width and I have html like this:
9 Answers
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