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When should null values of Boolean be used?
... Overloading the concept of null with a meaning other than "the universe doesn't know" it weaker than using a 3 (or more) valued enum. Makes reading code passing parameters into method more explicit, too.
– bluevector
Jun 26 '12 at 19:08
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Set focus on TextBox in WPF from view model
...IsFocused="{Binding IsUserNameFocused}" />
Hope this helps :). If it doesn't refer to the answer #2.
Cheers.
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How to create unit tests easily in eclipse [closed]
...nit tests easily by just selecting method. Is there a tool in eclipse that does that. It should support templates. I should be able to create positive test as well as negative tests.
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How do I load a file into the python console?
...sed, enter interactive mode after executing the script or the command. It does not read the $PYTHONSTARTUP file. This can be useful to inspect global variables or a stack trace when a script raises an exception.
So this should do what you want:
python -i file.py
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Remove everything after a certain character
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what does the [0] do in this situation?
– Dejan.S
Apr 12 '11 at 7:17
14
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Hibernate Criteria returns children multiple times with FetchType.EAGER
...get distinct results
Also mentioned in the Hibernate FAQ :
Hibernate does not return distinct results for a query with outer join fetching enabled for a collection (even if I use the distinct
keyword)? First, you need to understand SQL and how OUTER JOINs work
in SQL. If you do not fully u...
how to get an uri of an image resource in android
...cept on your machine. That's why it uses IDs and that your path.toString() doesn't work.
– ForceMagic
Jul 16 '13 at 15:21
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Is there any overhead to declaring a variable within a loop? (C++)
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It is true if the loop body does the assignment anyway, not just for initialization. And if there's just a body-independent/constant initialization, the optimizer can hoist it.
– peterchen
Jun 11 '09 at 19:59
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Can C++ code be valid in both C++03 and C++11 but do different things?
...ist.size(); // Might be an O(n) operation in C++03
std::ios_base::failure does not derive directly from std::exception anymore
While the direct base-class is new, std::runtime_error is not. Thus:
try {
std::cin >> variable; // exceptions enabled, and error here
} catch(std::runtime_error ...
Which is the correct shorthand - “regex” or “regexp” [closed]
...exp? engines don't support the question mark but they suck ;-) Anyway Perl does, and it's the closest thing to a "standard" for regular expression syntax.
– David Z
Jun 17 '10 at 1:27
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