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Prototypical inheritance - writing up [duplicate]

...en The property/member name is instance specific, it's different for bob and ben The member walk is part of Person.prototype and is shared for all instances bob and ben are instances of Person so they share the walk member (bob.walk===ben.walk). bob.walk();ben.walk(); Because walk() could not ...
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Why would I use a templating engine? jsp include and jstl vs tiles, freemarker, velocity, sitemesh

...er sort of logic - no possible option to drop down to using scriptlet tags and doing nasty things in your templates. Placeholders - do velocity/freemaker give anything more than JSTL? In JSTL you put placeholder, and use the model (placed in request or session scope, by controllers) to fill th...
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Efficiency of premature return in a function

This is a situation I encounter frequently as an inexperienced programmer and am wondering about particularly for an ambitious, speed-intensive project of mine I'm trying to optimize. For the major C-like languages (C, objC, C++, Java, C#, etc) and their usual compilers, will these two functions ru...
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How fast is D compared to C++?

... To enable all optimizations and disable all safety checks, compile your D program with the following DMD flags: -O -inline -release -noboundscheck EDIT: I've tried your programs with g++, dmd and gdc. dmd does lag behind, but gdc achieves performance...
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Creating range in JavaScript - strange syntax

... Understanding this "hack" requires understanding several things: Why we don't just do Array(5).map(...) How Function.prototype.apply handles arguments How Array handles multiple arguments How the Number function handles arguments ...
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How can I pair socks from a pile efficiently?

Yesterday I was pairing the socks from the clean laundry and figured out the way I was doing it is not very efficient. I was doing a naive search — picking one sock and "iterating" the pile in order to find its pair. This requires iterating over n/2 * n/4 = n 2 /8 socks on average. ...
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java.net.SocketException: Connection reset

...ying to read from a socket. I'm doing a readInt() on that InputStream , and I am getting this error. Perusing the documentation this suggests that the client part of the connection closed the connection. In this scenario, I am the server. ...
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What's the equivalent of use-commit-times for git?

I need the timestamps of files on my local and on my server to be in sync. This is accomplished with Subversion by setting use-commit-times=true in the config so that the last modified of each file is when it was committed. ...
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How do you split and unsplit a window/view in Eclipse IDE?

...or splitting is: Azerty keyboard: Ctrl + _ for split horizontally, and Ctrl + { for split vertically. Qwerty US keyboard: Ctrl + Shift + - (accessing _) for split horizontally, and Ctrl + Shift + [ (accessing {) for split vertically. MacOS - Qwerty US keyboard: ...
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How to install both Python 2.x and Python 3.x in Windows

...ws 7, but now I need to use the Python Imaging Library (PIL), ImageMagick, and wxPython, all of which require Python 2.x. 1...