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Why should C++ programmers minimize use of 'new'?

...ven if the stack could hold the entire file contents, you could not return from a function and keep the allocated memory block. Why dynamic allocation is often unnecessary In C++ there's a neat construct called a destructor. This mechanism allows you to manage resources by aligning the lifetime o...
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Why can't decimal numbers be represented exactly in binary?

...not exact. All I did was move the decimal one place and suddenly I've gone from Exactopia to Inexactville. Mathematically, there should be no intrinsic difference between the two numbers -- they're just numbers. Let's step away for a moment from the particulars of bases 10 and 2. Let's ask - in ba...
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How to destroy an object?

... have better performance (not tested but documented on one of the comments from the PHP official manual). That said, do keep in mind that PHP always destroys the objects as soon as the page is served. So this should only be needed on really long loops and/or heavy intensive pages. ...
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Get string character by index - Java

...formation on the Character class and the toString method, I pulled my info from the documentation on Character.toString. share | improve this answer | follow |...
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Cannot send a content-body with this verb-type

...or, providing body data for the request. Given that you're trying to read from the stream, it looks to me like you actually want to get the response and read the response stream from that: WebRequest request = WebRequest.Create(get.AbsoluteUri + args); request.Method = "GET"; using (WebResponse re...
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Android - How to get application name? (Not package name)

...t.getString(stringId); } Hope this helps. Edit In light of the comment from Snicolas, I've modified the above so that it doesn't try to resolve the id if it is 0. Instead it uses, nonLocalizedLabel as a backoff. No need for wrapping in try/catch. ...
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Python, Matplotlib, subplot: How to set the axis range?

... property to False. Here is a modified version of the FFT subplot snippet from your code: fft_axes = pylab.subplot(h,w,2) pylab.title("FFT") fft = scipy.fft(rawsignal) pylab.ylim([0,1000]) fft_axes.set_autoscaley_on(False) pylab.plot(abs(fft)) ...
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Auto-loading lib files in Rails 4

...a class: In file lib/development_mail_interceptor.rb (Yes, I'm using code from a Railscast :)) module DevelopmentMailInterceptor class DevelopmentMailInterceptor def self.delivering_email(message) message.subject = "intercepted for: #{message.to} #{message.subject}" message.to = ...
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What is the purpose of a plus symbol before a variable?

... How is it different from .parseInt() ? – Daniel W. Apr 10 '19 at 13:33 1 ...
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Why JSF saves the state of UI components on server?

...rver side and when exactly is the UI component's state information removed from the server memory? Those two questions seem to boil down to the same. Anyway, this is implementation specific and also dependent on whether the state is saved on server or client. A bit decent implementation will remove...