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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 grows asymptotically is completely irr...
Can you call Directory.GetFiles() with multiple filters?
...e types, such as mp3 's and jpg 's. I have tried both of the following with no luck:
26 Answers
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Should I use multiplication or division?
...0m7.997s
user 0m7.516s
sys 0m0.036s
=> no real difference
LuaJIT:
time luajit -O -e 'for i=1,1e8 do t=12341234234.234 / 2.0 end'
real 0m1.921s
user 0m1.668s
sys 0m0.004s
time luajit -O -e 'for i=1,1e8 do t=12341234234.234 * 0.5 end'
real 0m1.843s
user 0m1.676s
sys ...
How do servlets work? Instantiation, sessions, shared variables and multithreading
...ServletContext
When the servlet container (like Apache Tomcat) starts up, it will deploy and load all its web applications. When a web application is loaded, the servlet container creates the ServletContext once and keeps it in the server's memory. The web app's web.xml and all of included web-frag...
Shortest distance between a point and a line segment
... the shortest distance between a point and a line segment. Feel free to write the solution in any language you want; I can translate it into what I'm using (Javascript).
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What is a faster alternative to Python's http.server (or SimpleHTTPServer)?
... is a lot faster than Python's SimpleHTTPServer. This is primarily because it uses asynchronous IO for concurrent handling of requests, instead of serialising requests.
Installation
Install node.js if you haven't already. Then use the node package manager (npm) to install the package, using the -g o...
Ajax success event not working
I have a registration form and am using $.ajax to submit it.
16 Answers
16
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javascript: recursive anonymous function?
... may not want to do this in general because there are some weird problems with various implementations of Javascript. (note — that's a fairly old comment; some/many/all of the problems described in Kangax's blog post may be fixed in more modern browsers.)
When you give a name like that, the name ...
SOAP vs REST (differences)
...the first is a protocol (or at least tries to be) and the second is an architectural style. This is probably one of the sources of confusion around it, since people tend to call REST any HTTP API that isn't SOAP.
Pushing things a little and trying to establish a comparison, the main difference betw...
Can I browse other people's (Apple) bug reports? [closed]
...e uses multiple bug reports for the same issue as an indicator of the severity or priority of a bug or request (see this blog post). So while I generally agree with you that it's better to search first and try to avoid duplicate bug reports, in Apple's case you just file a new bug report every time....