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“R cannot be resolved to a variable”? [duplicate]
In Eclipse, I've created a project from a source and now it shows errors - "R cannot be resolved to a variable". From what I found here, I had cleared and rebuilt the project, but still the R file doesn't appear in the /gen folder.
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What's the point of having pointers in Go?
...ences (with appropriate const or mutable qualifiers). Now we have pointers and for some built-in types like maps and channels implicit pass by reference.
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Why is `std::move` named `std::move`?
...cast to rvalue - more specifically to an xvalue, as opposed to a prvalue. And it is also true that having a cast named move sometimes confuses people. However the intent of this naming is not to confuse, but rather to make your code more readable.
The history of move dates back to the original mo...
Hibernate Criteria returns children multiple times with FetchType.EAGER
I have an Order class that has a list of OrderTransactions and I mapped it with a one-to-many Hibernate mapping like so:
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How to change max_allowed_packet size
...on in your file:
max_allowed_packet=500M
then restart the MySQL service and you are done.
See the documentation for further information.
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How to validate phone numbers using regex
...ogether a comprehensive regex to validate phone numbers. Ideally it would handle international formats, but it must handle US formats, including the following:
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Why don't structs support inheritance?
...rt inheritance is because of arrays.
The problem is that, for performance and GC reasons, arrays of value types are stored "inline". For example, given new FooType[10] {...}, if FooType is a reference type, 11 objects will be created on the managed heap (one for the array, and 10 for each type ins...
Why is there no xrange function in Python3?
Recently I started using Python3 and it's lack of xrange hurts.
6 Answers
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How can I link to a specific glibc version?
...f glibc. When I run this binary on another PC with an older glibc, the command fails saying there's no glibc 2.11...
4 Ans...
How can I print variable and string on same line in Python?
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Use , to separate strings and variables while printing:
print "If there was a birth every 7 seconds, there would be: ",births,"births"
, in print statement separates the items by a single space:
>>> print "foo","bar","spam"
foo bar spam
or ...