indices

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Trying to get the indices of an element from a list in scheme

So i\'m trying to get the indices from a list ex: (get-indices \'G (list \'A \'G \'T \'X \'I \'T \'G))[详细]

2023-02-18 16:58 分类：问答
Optimised Python dictionary / negative index storage

Raised by this question\'s comments (I can see that this is irrelevant), I am now aware that using dictionaries for data that needs to be queried/accessed regularly is not good, speedwise.[详细]

2023-02-16 20:00 分类：问答
Is there a stored procedure to work out what indexes I should add?

Firstly, apologies if this is on the wrong site. Secondly, I vaguely remember from a couple of years ago, when trying to heavily index a SQL Server 2005 db that there was a stored procedure that I co[详细]

2023-02-12 17:29 分类：问答
Writing API called from Lua - 0 or 1 based?

If you were to write an API that is called from Lua (which is 1-based, e.g. table indices start at 1), would you apply the same rule to your API?[详细]

2023-01-30 07:58 分类：问答
multicolumn index column order

I\'ve be told and read it everywhere (but no one dared to explain why) that when composing an index on multiple columns I should put the most selective column first, for performance reasons.[详细]

2023-01-27 04:24 分类：问答
GLubyte vs GLshort for Indices

Looking through documentation for vertex arrays in OpenGL, two of the most common memory types used for indices I found were GLubyt开发者_JS百科e (GL_UNSIGNED_BYTE) and GLshort (GL_SHORT).[详细]

2023-01-25 09:51 分类：问答
Cumulative summation of a numpy array by index

Assume you have an array of values that will need to be summed together d = [1,1,1,1,1] and a second array specifying which e开发者_Go百科lements need to be summed together[详细]

2023-01-14 10:34 分类：问答
Unique index on every column

So here I am looking at this huge oracle 10g table. I looked at its indexes and see that ALL of the columns are under one unique index. Does this provide actually provide any p开发者_如何转开发erforma[详细]

2023-01-08 03:40 分类：问答
C++ class for arrays with arbitrary indices

Do any of the popular C++ libraries have a class (or classes) that allow the developer to use arrays with arbitrary indices without sacrificing speed ?[详细]

2022-12-21 02:01 分类：问答
Update multiple columns in SQL with bound multi-part identifier

I\'m trying to update multiple columns in a MS SQL statement using a sub-query. A search led me to something like:[详细]

2022-12-17 11:05 分类：问答