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If strings are immutable in .NET, then why does Substring take O(n) time?
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UPDATE: I liked this question so much, I just blogged it. See Strings, immutability and persistence
The short answer is: O(n) is O(1) if n does not grow large. Most people extract tiny substrings from tiny strings, so how the complexity gr...
Why can't I make a vector of references?
When I do this:
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Why can I throw null in Java? [duplicate]
When running this:
7 Answers
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General suggestions for debugging in R
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I'd say that debugging is an art form, so there's no clear silver bullet. There are good strategies for debugging in any language, and they apply here too (e.g. read this nice article). For instance, the first thing is to reproduce the problem......
Why do we have to normalize the input for an artificial neural network?
It is a principal question, regarding the theory of neural networks:
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Save icon: Still a floppy disk? [closed]
I'm working on a project where the user is able to save their work (most likely to the HDD but also possibly any other media, including floppy disks). Sure, the popular File > Save option is there but what about a toolbar button?
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Is it possible to hide the cursor in a webpage using CSS or Javascript?
I want to hide the cursor when showing a webpage that is meant to display information in a building hall. It doesn't have to be interactive at all. I tried with the cursor property and a transparent cursor image but I didn't make it work.
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Why does GCC generate such radically different assembly for nearly the same C code?
...nd how GCC optimizes fast_trunc_one().
Believe it or not, fast_trunc_one() is being optimized to this:
int fast_trunc_one(int i) {
int mantissa, exponent;
mantissa = (i & 0x07fffff) | 0x800000;
exponent = 150 - ((i >> 23) & 0xff);
if (exponent < 0) {
return...
JavaScript unit test tools for TDD
...e been unable to find a suitable option to remain fully TDD compliant. So, is there a JavaScript unit test tool that is fully TDD compliant?
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history.replaceState() example?
Can any one give a working example for history.replaceState? This is what w3.org says:
8 Answers
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