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When does invoking a member function on a null instance result in undefined behavior?

...) and (b) result in undefined behavior. It's always undefined behavior to call a member function through a null pointer. If the function is static, it's technically undefined as well, but there's some dispute. The first thing to understand is why it's undefined behavior to dereference a null poin...
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When should I use genetic algorithms as opposed to neural networks? [closed]

...lution space of a GA problem as a set of states or values. Such as "Find all of the ways a set of four chess pieces could be arranged on a chessboard to create a checkmate." However the solution space can also be a set of algorithms. This is where the real power of genetic algorithms come into pl...
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How to check if a word is an English word with Python?

... if you want more languages. There appears to be a pluralisation library called inflect, but I've no idea whether it's any good. share | improve this answer | follow ...
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How to set button click effect in Android?

...ist of states for the button. So for example if you create a new xml file called "button.xml" with the following code: <selector xmlns:android="http://schemas.android.com/apk/res/android"> <item android:state_focused="true" android:state_pressed="false" android:drawable="@drawable/YOUR...
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Sublime Text 2 keyboard shortcut to open file in specified browser (e.g. Chrome)

... I'm not really sure this question is approprate here, but you can add a new "Build System" under Tools -> Build System -> New Build System... As with all configuration in Sublime Text its just JSON, so it should be pretty straig...
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p vs puts in Ruby

... world of programming, due to your mention of debugging, p or puts? Should all "p" be replaced with "puts" upon completion of debugging?? I see, in an above comment, that p returns an object, which is a huge difference. Im not sure if this answer is complete if it only mentions a small difference t...
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The request was aborted: Could not create SSL/TLS secure channel

... I finally found the answer (I haven't noted my source but it was from a search); While the code works in Windows XP, in Windows 7, you must add this at the beginning: // using System.Net; ServicePointManager.Expect100Continue =...
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Position a CSS background image x pixels from the right?

...ected as the "Correct answer". According to MDN it's supported in IE9+ and all other browsers, which is great! developer.mozilla.org/en-US/docs/Web/CSS/… – fregante Sep 27 '13 at 0:16 ...
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What difference does .AsNoTracking() make?

I have a question regarding the .AsNoTracking() extension, as this is all quite new and quite confusing. 6 Answers ...
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java.lang.RuntimeException: Unable to instantiate activity ComponentInfo

...The manifest in the primary project had the proper activity definition and all of the appropriate properties I didn't have an abstract activity or any of the other gotchas I've seen on Stack Overflow pertaining to this problem. However, I still encountered the error described in the original post ...