optimization

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How much programmer "assist" does Java normally need for a switch to JIT to a dispatch table?

I understand that Java does optimizations across the board and can optimize switches depending on how many cases there are, whether the switch is sparse or dense, and if the code is even hot enough fo[详细]

2023-04-08 07:03 分类：问答
When I call Count method in Entity Framework, does it process all the columns or just one or what?

Im looking for otimization. When I call Count method in Entity Framework, does it process all the columns or only开发者_高级运维 one or what?[详细]

2023-04-08 05:59 分类：问答
Effecient MySQL SELECT for text in columns in InnoDB

I have a large large table (InnoDB) that essentially has a location name with the location\'s latitude and longitude.my query is something like[详细]

2023-04-08 05:51 分类：问答
Optimize this C Code [closed]

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical andcannot be reasonably answered in its current form. For help clari[详细]

2023-04-08 01:44 分类：问答
A short as possible unique ID

I\'m making a tool for optimizing script and now I want to compress all names in it to the minimum. I got the function started for it, but it somehow bugs and stops after length 2 is exceeded.[详细]

2023-04-08 00:08 分类：问答
Is it *really* worth to use integer over varchar for a set of data?

For example if I have a table User, I want to store gender or sex, I\'ll add开发者_如何学JAVA a column like sex.[详细]

2023-04-07 21:33 分类：问答
How to get a optimized paginated list from a query that has a UNION ALL?

I have a query formed by an UNION ALL from two tables. The results have to be ordered and paginated (like the typical list of a web application).[详细]

2023-04-07 20:45 分类：问答
Do i need to delete dom fragments or will the garbage collector remove them?

This maybe a bit of a silly question. I\'m assuming that the garbage collector disposes of any dangling variables after a function ends execution, but I was wondering if this also applies to DOM fragm[详细]

2023-04-07 20:15 分类：问答
What's the meaning of tmax of the control parameter in optim of R?

I\'m new to R and data mining/ machine learning. I\'m trying to understand the use of optim with SANN method.[详细]

2023-04-07 19:22 分类：问答
optimise distance calculation in matlab

I am a newbie with Matlab and I have the following scenario( which is part of a larger problem). matrix A with 4754x1024and matrix B with 6800x1024 rows.[详细]

2023-04-07 18:10 分类：问答