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When does invoking a member function on a null instance result in undefined behavior?
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Both (a) 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 thin...
Remove HTML Tags in Javascript with Regex
...use the HTML parser doesn't require that the last tag be closed by a >, and the second fails because image loading starts even before a parsed DOM tree is added to the DOM, and $('<img ...>') invokes the HTML parser.
– Mike Samuel
Nov 1 '13 at 3:21
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What are the allowed tags inside a ?
... <li> may contain flow content, which is the collection of all block and inline elements.
The HTML5 spec for an <li> is the same in that it also allows any flow content.
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Git - undoing git rm [duplicate]
...S here. I worked 10 hours on a project without committing (I know, I know) and then I git added too many files, so I tried using git rm and accidentally deleted EVERYTHING. Is there hope for me? :(((
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Regular Expression for alphanumeric and underscores
...e to have a regular expression that checks if a string contains only upper and lowercase letters, numbers, and underscores.
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How do I run all Python unit tests in a directory?
... that will, you guessed it, run all files in the aforementioned test form and return the result. I have tried two methods so far; both have failed. I will show the two methods, and I hope someone out there knows how to actually do this correctly.
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How can I create an object and add attributes to it?
I want to create a dynamic object (inside another object) in Python and then add attributes to it.
16 Answers
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Show percent % instead of counts in charts of categorical variables
I'm plotting a categorical variable and instead of showing the counts for each category value.
8 Answers
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Favorite (Clever) Defensive Programming Best Practices [closed]
...ensive coding, what would they be? Although my current languages are Java and Objective-C (with a background in C++), feel free to answer in any language. Emphasis here would be on clever defensive techniques other than those that 70%+ of us here already know about. So now it is time to dig dee...
What's the difference between hard and soft floating point numbers?
... architecture" This can make sense for a library to be machine-independent and bit-exact (soft float) in accuracy-critical parts and fast (hard float) in parts where small deviations don't matter.
– PhilLab
May 29 '17 at 12:18
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