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C# difference between == and Equals()
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When == is used on an expression of type object, it'll resolve to System.Object.ReferenceEquals.
Equals is just a virtual method and behaves as such, so the overridden version will be used (which, for string type compares the contents).
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Delete all but the most recent X files in bash
Is there a simple way, in a pretty standard UNIX environment with bash, to run a command to delete all but the most recent X files from a directory?
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Java: how do I get a class literal from a generic type?
... for concrete parameterized types?
Because parameterized type has no exact runtime type representation.
A class literal denotes a Class
object that represents a given type.
For instance, the class literal
String.class denotes the Class
object that represents the type
String and i...
Git: How to rebase to a specific commit?
...tLab says something else. If I had 10 commits behind, 5 commits ahead, my expectation was to have 8 commits behind, 5 commits ahead after getting 2 commits. But instead of this it adds more commits to those 5.
– ROMANIA_engineer
Apr 30 '19 at 8:45
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Check if something is (not) in a list in Python
...e container type that could be less efficient, or even incorrect. See for example bloom filters.
– orlp
May 2 '12 at 0:24
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C multi-line macro: do/while(0) vs scope block [duplicate]
...do-while-0-macro-substitutions
https://groups.google.com/d/msg/comp.lang.C/xGZxls194mI/dEIpTKz2okMJ
Andrey Tarasevich:
The whole idea of using 'do/while' version is to make a macro which will
expand into a regular statement, not into a compound statement. This is
done in order to make the use of f...
Multiple Order By with LINQ [duplicate]
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You can use the ThenBy and ThenByDescending extension methods:
foobarList.OrderBy(x => x.Foo).ThenBy( x => x.Bar)
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Order a List (C#) by many fields? [duplicate]
...ant to order a List of objects in C# by many fields, not just by one. For example, let's suppose I have a class called X with two Attributes, A and B, and I have the following objects, in that order:
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How to find common elements from multiple vectors?
...of positive integers, all in a list L. The following code works: N <- max(unlist(L)); LT <- lapply(L, tabulate, nbins = N); v <- do.call(pmin, LT); unlist(sapply(1:N, function(x) rep(x, v[x]))) Another way to do this would use the match function along with negative subscripting to iterative...
C# convert int to string with padding zeros?
... '0') - okay, but doesn't work for negative numbers
i.ToString("0000"); - explicit form
i.ToString("D4"); - short form format specifier
$"{i:0000}"; - string interpolation (C# 6.0+)
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