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

...behavior" is mentioned in notes in both §1.9/4 and §8.3.2/4, it's never explicitly stated. (Notes are non-normative.) However, one can try to deduced it from §3.10/2: An lvalue refers to an object or function. When dereferencing, the result is an lvalue. A null pointer does not refer to a...
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How to find time complexity of an algorithm

... How to find time complexity of an algorithm You add up how many machine instructions it will execute as a function of the size of its input, and then simplify the expression to the largest (when N is very large) term and can include any simplify...
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Customizing Bootstrap CSS template

..., be completely (and easily) modifiable, be sustainable (ie – when the next version of Bootstrap is released from Twitter I don’t have to start over. ...
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Why are mutable structs “evil”?

...ue types immutable. First, you tend to lose changes quite easily... for example, getting things out of a list: Foo foo = list[0]; foo.Name = "abc"; what did that change? Nothing useful... The same with properties: myObj.SomeProperty.Size = 22; // the compiler spots this one forcing you to d...
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Android emulator failed to allocate memory 8

When I try to run my WXGA800 emulator from Eclipse it's giving an error like this 12 Answers ...
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Python try…except comma vs 'as' in except

What is the difference between ',' and 'as' in except statements, eg: 5 Answers 5 ...
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How to access parent scope from within a custom directive *with own scope* in AngularJS?

...ards, but I want to avoid something totally hacky or unmaintainable. For example, I know I could do it right now by taking the $scope from the preLink parameters and iterating over it's $sibling scopes to find the conceptual "parent". ...
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What's the difference between `1L` and `1`?

... So, @James and @Brian explained what 3L means. But why would you use it? Most of the time it makes no difference - but sometimes you can use it to get your code to run faster and consume less memory. A double ("numeric") vector uses 8 bytes per e...
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How to get Linux console window width in Python

...the number of characters that fits in one line without wrapping, not the pixel width of the window. 14 Answers ...
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Why do we need boxing and unboxing in C#?

Why do we need boxing and unboxing in C#? 11 Answers 11 ...