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How to implement an STL-style iterator and avoid common pitfalls?
... void swap(iterator& lhs, iterator& rhs); //C++11 I think
};
input_iterator : public virtual iterator {
iterator operator++(int); //postfix increment
value_type operator*() const;
pointer operator->() const;
friend bool operator==(const iterator&, const iterator&)...
Watch multiple $scope attributes
...n, when I was trying to use the $watchCollection over an array, I got this error TypeError: Object #<Object> has no method '$watchCollection' but this solution helps me to solve my problem !
– abottoni
Sep 10 '13 at 8:05
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Android: failed to convert @drawable/picture into a drawable
...xact same size in the same folder, and try to reference it, is flags up an error "Failed to convert @drawable/picture into a drawable" . I have tried the same image with a different name and it just keeps giving me that error. I have also tried it in a different XML layout and the same thing. Also ...
Are string.Equals() and == operator really same? [duplicate]
Are they really same? Today, I ran into this problem. Here is the dump from the Immediate Window:
8 Answers
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Difference between fprintf, printf and sprintf?
...ter to the standard output stream, and stderr is a pointer to the standard error output stream. In an interactive session, the three usually refer to your console, although you can redirect them to point to other files or devices:
$ myprog < inputfile.dat > output.txt 2> errors.txt
In t...
How to do relative imports in Python?
.... And, thats why python complains about the relative import in non-package error.
So, by using the -m switch you provide the package structure information to python, through which it can resolve the relative imports successfully.
I have encountered this problem many times while doing relative im...
Team city unmet requirement: MSBuildTools12.0_x86_Path exists
...etting "MSBuild ToolsVersion" was set to 12.0 (default), which lead to the error "Unmet requirements: MSBuildTools12.0_x86_Path exists" on my system. Because I don't need the new MSBuild 12.0 to run my build, I changed this setting to 4.0 in my build step. This MSBuild version is correctly installed...
Can I query MongoDB ObjectId by date?
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I get ReferenceError: ObjectId is not defined. How do i fix that?
– peter
Mar 18 '13 at 6:17
3
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Optional Parameters with C++ Macros
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XXX_4(1,2,3,4);
5;
PS: Remove the #define for XXX_0 to get a compile error [ie: if a no-argument option is not allowed].
PPS: Would be nice to have the invalid situations (eg: 5) be something that gives a clearer compilation error to the programmer!
PPPS: I'm not an expert, so I'm very happy...
How to check if field is null or empty in MySQL?
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answered May 15 '18 at 14:05
Gleb KemarskyGleb Kemarsky
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