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What guarantees are there on the run-time complexity (Big-O) of LINQ methods?
...inct, GroupBy Join, and I believe also the set-aggregation methods (Union, Intersect and Except) use hashing, so they should be close to O(N) instead of O(N²).
Contains checks for an ICollection implementation, so it may be O(1) if the underlying collection is also O(1), such as a HashSet<T>,...
Remove non-ascii character in string
...... invalid characters (be it %80, \uFFFF or unexplained whitespaces) when converting to base64, this is a working solution
– B. León
Jun 30 at 2:38
add a comment
...
Referencing a string in a string array resource with xml
...'t think you can, but there seems to be a workaround:.
If you take a look into the Android Resource here:
http://developer.android.com/guide/topics/resources/string-resource.html
You see than under the array section (string array, at least), the "RESOURCE REFERENCE" (as you get from an XML) does ...
dplyr summarise: Equivalent of “.drop=FALSE” to keep groups with zero length in output
...)
#> # A tibble: 3 x 2
#> b count_a
#> <fct> <int>
#> 1 1 6
#> 2 2 6
#> 3 3 0
One additional note to go with @Moody_Mudskipper's answer: Using .drop=FALSE can give potentially unexpected results when one or more grouping variab...
what is the difference between OLE DB and ODBC data sources?
...g to happen for a number of reasons, such as:
The world was not going to convert to Microsoft technologies and
away from ODBC;
DAO/ODBC was faster than ADO/OLE DB and was also thoroughly integrated into MS Access, so wasn’t going to die a natural death;
New technologies that were being developed...
Why is extending native objects a bad practice?
...Even using some more regular function name like foo(native).coolStuff() to convert it into some "extended" object looks great syntactically. So thanks for that!
– egst
Oct 27 '18 at 21:55
...
What is the lifetime of a static variable in a C++ function?
...epend on the specific program run, the order of construction must be taken into account.
Example
struct emitter {
string str;
emitter(const string& s) : str(s) { cout << "Created " << str << endl; }
~emitter() { cout << "Destroyed " << str << endl;...
WPF ToolBar: how to remove grip and overflow
... RelativeSource = RelativeSource.Self,
Converter = new BooleanToVisibilityConverter()
});
}
};
if (toolBar.IsLoaded)
{
fixup();
}
else
{
RoutedEventHandler handler = null;
handler = (sender, ...
Design patterns or best practices for shell scripts [closed]
...ON_MSG="missing config_file parameter"
exit 1
fi
Another important point is that a program should always return zero if completes successfully, non-zero if something went wrong.
Function calls
You can call functions in bash, just remember to define them before the call. Functions are like sc...
What is the difference between inversedBy and mappedBy?
...entity in one place is an anti-argument. Since when grouping all your code into one place is a good thing ? It is a pain to write, a pain to maintain, and reduce the organization in your project. best practice ? Duh.
– JesusTheHun
Nov 29 '16 at 15:26
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