performance

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efficient renaming of variables in first-order formulae

edit2: Taking the hint that de Bruijn indices might be easier to work with, I\'ve reformulated much of the internal representation of formulae to use a mixed de Bruijn representation ala Connor McBrid[详细]

2023-04-13 03:18 分类：问答
Speed up linq query without where clauses

Quick LINQ performance question. I have a database with many many records and it\'s used for a webshop.[详细]

2023-04-13 02:02 分类：问答
EF 4.1 code-first: difference between EF generated sql and custom sql

I have a question about sql generated by Entity Framework and the hand-writed one. In my project, I have some entities (they aren\'t important really for this Q), for a simple example, when I use this[详细]

2023-04-13 01:52 分类：问答
How often does oracle revise a query plan?

When running a performance benchmark for our data processing application we start with a FOO_TABLE empty and then insert records from one thread while in another thread we select the same records from[详细]

2023-04-13 01:42 分类：问答
What is faster in those two JavaScript codes?

I know that PHP performance is affe开发者_Python百科cted by things like these so my question is what is faster.[详细]

2023-04-13 01:36 分类：问答
SQLite: Prevent fragmentation

I need to fill a database with millions of records, and my current routine for that looks something like:[详细]

2023-04-13 00:31 分类：问答
In JS, which is faster: Object's "in" operator or Array's indexof?

I want to keep a list of strings that I will only ever check for the presence of, eg: corporatePlan = [[详细]

2023-04-12 23:19 分类：问答
Article on running greenplum on Ramdisk

Where can I find good articles on running Greenplum on Ramdisk? There are lot of artciles related to running postgres in Ramdisk, But I could 开发者_开发知识库not find for Greenplum. Can somebody help[详细]

2023-04-12 23:00 分类：问答
Repeated where() vs multiple collections in c#

I\'ve got a collection of object A\'s. Each A has a field that correlates is to an object B - of which I have another collection. In other words, each B is attached to a subset of the collection of As[详细]

2023-04-12 22:55 分类：问答
Mongodb vs. Couch Db Select Performances

I read many things about performance comparison between Couch Db and Mongo Db at insert capabilities. However at somewhere it says that Couch Db has a better read performance. Is there any performance[详细]

2023-04-12 22:19 分类：问答