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How to read keyboard-input?

... mixing different Pythons here (Python 2.x vs. Python 3.x)... This is basically correct: nb = input('Choose a number: ') The problem is that it is only supported in Python 3. As @sharpner answered, for older versions of Python (2.x), you have to use the function raw_input: nb = raw_input('Choose...
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Why are preprocessor macros evil and what are the alternatives?

I have always asked this but I have never received a really good answer; I think that almost any programmer before even writing the first "Hello World" had encountered a phrase like "macro should never be used", "macro are evil" and so on, my question is: why? With the new C++11 is there a real alte...
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What's the difference between using INDEX vs KEY in MySQL?

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What's the best way of scraping data from a website? [closed]

...negligence here is very unethical since this can be considered a denial of service attack. The acceptable rate varies depending on who you ask, 1req/s is the max that the Google crawler runs at but you are not Google and you probably aren't as welcome as Google. Keep it as slow as reasonable. I woul...
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Remove duplicates from an array of objects in JavaScript

...) dot notation. Yours is ES5 syntax. The others are mostly ES6 (ECMA2015). All are valid in 2017. See jaredwilli's comment. – agm1984 Nov 15 '17 at 9:20 ...
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Kotlin secondary constructor

...tructors in Kotlin since these constructors are necessary sometimes, especially when working with Java frameworks and extending Java classes. Hope you'll get them back soon. – Michael Jul 17 '14 at 7:46 ...
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Export from sqlite to csv using shell script

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Get name of object or class

...(function(){}); new myclass prints myclass {} – Hugh Allen May 26 '14 at 4:09 ...
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How do I create a copy of an object in PHP?

...ass by reference is a bad idea, because it makes the effect of a function call depend on the implementation of the function, rather than on the specification. It's got nothing to do with pass by value being the default. – Oswald Oct 4 '13 at 7:06 ...
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.NET Configuration (app.config/web.config/settings.settings)

...emed to be ignoring my app.config file! It is supposed to connect to a web service and the service url is in my app.config. Unbeknownst to me, when I created the web reference, it also created a Settings.Settings file AND hardcoded the default value into the code. Even when I finally figured out (an...