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  • 102 votes cast
Nov
25
accepted How to Clear variables represented as a list of strings?
Nov
25
comment How to Clear variables represented as a list of strings?
@YvesKlett I don't know how to write a proper title. Could you help to edit my title? Thank you
Nov
25
comment How to Clear variables represented as a list of strings?
@Kuba I like your quick and accurate answer!
Nov
25
asked How to Clear variables represented as a list of strings?
Nov
25
accepted How to construct this matrix fast?
Nov
25
accepted How to force an evaluation to use only one core?
Nov
25
accepted How to partition a list according to a nested table structure?
Nov
23
accepted Why does Thread FileDate give an error message?
Nov
22
revised What is the principle behind Dispatch?
added 79 characters in body
Nov
22
comment What is the principle behind Dispatch?
@Mr.Wizard Yeah, I admit it is a little off-topic. And I was wondering if DeleteCases also use hash table? Because it is fast too.
Nov
22
asked What is the principle behind Dispatch?
Nov
22
awarded  Yearling
Nov
21
comment How to Delete Elements from List1 appearing in List2?
@LeonidShifrin and I found that though Complement sort result, but it's even faster then DeleteCases when I test large list!
Nov
21
comment How to Delete Elements from List1 appearing in List2?
@LeonidShifrin I am curious about the principle of DeleteCases. Why is it so fast than Select[list1, FreeQ[list2, #] &]? And I don't know the principle of Dispatch either. May be they have the same principle?
Nov
21
comment How to delete mirror symmetric point pair efficiently
@MichaelE2 You're right. But anyway, the answers contain methods tackle both general case and specific case.
Nov
21
comment Removing reverse versions of lists from a nested list
@LeonidShifrin I understand. Thank you!
Nov
20
comment How to delete mirror symmetric point pair efficiently
clever for getMeTheSymms! Straight and fast for fasterSymms
Nov
20
comment How to delete mirror symmetric point pair efficiently
Oh, I know, n must be odd
Nov
20
comment How to delete mirror symmetric point pair efficiently
why deleteMS didn't give any result on my mathematica?
Nov
20
comment Removing reverse versions of lists from a nested list
@LeonidShifrin f[x_List] := (f[Reverse[x]] = Sequence[]; x); I've never seen this kind of definition before. What is this?