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What is the meaning of id?
...ny type, but unlike void * it always points to an Objective-C object. For em>x m>ample, you can add anything of type id to an NSArray, but those objects must respond to retain and release.
The compiler is totally happy for you to implicitly cast any object to id, and for you to cast id to any object. Th...
rotating am>x m>is labels in R
In R, how do I make a (bar)plot's y am>x m>is labels parallel to the m>X m> am>x m>is instead of parallel to the Y am>x m>is?
5 Answers
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super() fails with error: TypeError “argument 1 must be type, not classobj” when parent does not inh
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print type(NewStyle) # prints <type 'type'>
Note that in Python 3.m>x m>, all classes are new-style. You can still use the syntam>x m> from the old-style classes but you get a new-style class. So, in Python 3.m>x m> you won't have this problem.
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postgresql COUNT(DISTINCT …) very slow
...DISTINCT()) performs sorting, it will be definitely helpful to have an indem>x m> on the column_name especially with relatively small amount of work_mem (where hashing will produce relatevely large amount of batches). Since that, it's not always bad to use COUNT (DISTINCT()_, isn't?
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How do I select a merge strategy for a git rebase?
git-rebase man page mentions -m>X m><option> can be passed to git-merge . When/how em>x m>actly?
3 Answers
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Map and Reduce in .NET
...it under different names.
Map is Select:
Enumerable.Range(1, 10).Select(m>x m> => m>x m> + 2);
Reduce is Aggregate:
Enumerable.Range(1, 10).Aggregate(0, (acc, m>x m>) => acc + m>x m>);
Filter is Where:
Enumerable.Range(1, 10).Where(m>x m> => m>x m> % 2 == 0);
https://www.justinshield.com/2011/06/mapreduce-in-c...
Pass arguments to Constructor in VBA
...unction has to instantiate your class, and call the initiation subroutine em>x m>plained in point (1), passing the received arguments. Finally returned the instantiated and initiated method.
Em>x m>ample:
Let's say we have the custom class Employee. As the previous em>x m>ample, is has to be instantiated with na...
List distinct values in a vector in R
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Do you mean unique:
R> m>x m> = c(1,1,2,3,4,4,4)
R> m>x m>
[1] 1 1 2 3 4 4 4
R> unique(m>x m>)
[1] 1 2 3 4
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How to convert Milliseconds to “m>X m> mins, m>x m> seconds” in Java?
... want to show them the time elapsed using a human readable format such as "m>X m>m>X m> hours, m>X m>m>X m> mins, m>X m>m>X m> seconds" or even "m>X m>m>X m> mins, m>X m>m>X m> seconds" because its not likely to take someone an hour.
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What are the relationships between Any, AnyVal, AnyRef, Object and how do they map when used in Java
I usually end up trying every combination until it compiles. Can somebody em>x m>plain what I should use where?
3 Answers
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