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Why is null an object and what's the difference between null and undefined?
...ly things like Number(null + 2)... but you shouldn't :-). Excellent answer from kentaromiura.
– squidbe
Jan 4 '13 at 7:06
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C++ map access discards qualifiers (const)
...ot in the map.
const mapped_type& at(const key_type& __k) const
From a reference in the function's comment, it appears that this has been suggested as a new member function in the standard library.
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Golang tests in sub-directory
...n
For example, for:
./models/todo.go
./test/todo_test.go
to test todo.go from todo_test.go,
your import in the todo_test.go will be
import "../models"
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How do I add files without dots in them (all extension-less files) to the gitignore file?
...d to ignore all files execpt *.c,*.h and .gitignore, So this works for me, from the .gitignore example:
*/* #ignore all files in each directory
!*/*.c #unignore .c files in each directory
!*/*.h #unignore .h header files in each directory
!.gitignore #unignore .gitignore
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Use StringFormat to add a string to a WPF XAML binding
... I like this answer a little better because I can insert text from a string library easily. Of course if you're really worried about internationalization, you'd probably be better off using a converter so the order of the number and units isn't fixed. <Run Text="{x:Static s:UIStrin...
How do I pass extra arguments to a Python decorator?
...beep')
return result
return my_logic
# usage example from here on
@NiceDecorator(param_bar='baaar')
def example():
print('example yay')
example()
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Adding a regression line on a ggplot
...iction curve for any model that supports predict, such as non-linear npreg from package np.
Note: If you use scale_x_continuous or scale_y_continuous some values may be cutoff and thus geom_smooth may not work correctly. Use coord_cartesian to zoom instead.
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Why do some C# lambda expressions compile to static methods?
...ill always be false).
See here: Why has a lambda with no capture changed from a static in C# 5 to an instance method in C# 6?
and here: Difference in CSC and Roslyn compiler's static lambda expression evaluation?
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How to forward declare a template class in namespace std?
...e is a very bad practice because it prevents anyone using that header file from being able to use local names that would otherwise be valid. It basically defeats the entire point of namespaces.
– Andy Dent
Feb 23 '16 at 6:37
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Differences between C++ string == and compare()?
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@xtofl from Tony's example the generated codes are identical in the release build, they're different in the debug builds.
– JulianHarty
Apr 8 '17 at 8:25
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