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Why do I get a segmentation fault when writing to a “char *s” initialized with a string literal, but
The following code receives seg fault on line 2:
17 Answers
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Good or bad practice for Dialogs in wpf with MVVM?
I lately had the problem of creating add and edit dialogs for my wpf app.
3 Answers
3
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In Eclipse, what can cause Package Explorer “red-x” error-icon when all Java sources compile without
I'm using Eclipse for Java development. All my sources compile fine and the resulting application compiles fine. However, I keep getting an "red-x" error notification in the Package Explorer.
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MongoDB: Combine data from multiple collections into one..how?
How can I (in MongoDB) combine data from multiple collections into one collection?
11 Answers
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Regular Expressions: Is there an AND operator?
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Use a non-consuming regular expression.
The typical (i.e. Perl/Java) notation is:
(?=expr)
This means "match expr but after that continue matching at the original match-point."
You can do as many of these as you want, and this will be ...
Can git undo a checkout of unstaged files
I accidentially discard my changes on files in my local working tree via git checkout. The files aren't staged at this time. Is it posible to "undo" this checkout?
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jsonify a SQLAlchemy result set in Flask [duplicate]
I'm trying to jsonify a SQLAlchemy result set in Flask/Python.
15 Answers
15
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If strings are immutable in .NET, then why does Substring take O(n) time?
Given that strings are immutable in .NET, I'm wondering why they have been designed such that string.Substring() takes O( substring.Length ) time, instead of O(1) ?
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Why doesn't indexOf work on an array IE8?
The below function works fine on Opera, Firefox and Chrome. However, in IE8 it fails on the if ( allowed.indexOf(ext[1]) == -1) part.
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Double Negation in C++
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I think cast it explicitly with (bool) would be clearer, why use this tricky !!, because it is of less typing?
– Baiyan Huang
Mar 29 '10 at 3:39
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