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Difference between string and text in rails?
... increased storage space when using the blank-padded type, and a few extra CPU cycles to check the length when storing into a length-constrained column. While character(n) has performance advantages in some other database systems, there is no such advantage in PostgreSQL; in fact character(n) is usu...
When does System.gc() do something?
...generations in a multi-generational heap), then it can actually cause MORE cpu cycles to be consumed than necessary.
In some cases, it may make sense to suggest to the VM that it do a full collection NOW as you may know the application will be sitting idle for the next few minutes before heavy lift...
How can I make a .NET Windows Forms application that only runs in the System Tray?
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Thread.Sleep is a bad idea: you'll end up using more CPU and battery than if you just did Application.Run like you're meant to.
– Sneftel
Jun 18 at 10:51
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将 App Inventor 2 项目连接到外部传感器 · App Inventor 2 中文网
...feedback as to the direction of the project. I would also like to thank José Dominguez for assisting with software aspect of the project, and Ilaria Liccardi for assisting with the hardware aspect of the project. I would finally like to thank the entire App Inventor team for their continued work on...
How can I clear or empty a StringBuilder? [duplicate]
...'s a lot faster just to set the text length to zero (virtually no work for CPU) and reuse the same buffer.
– Sulthan
Jun 14 '11 at 9:08
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Team city unmet requirement: MSBuildTools12.0_x86_Path exists
...rous restarts and reinstalls.
I noticed that the agent info such as OS and CPU was not appearing on the agent details page. This indicated that the problem was not with the .NET and MSBUILD prerequisites but were instead related to the agent service not being able to read info about the machine.
The...
ASP.NET MS11-100: how can I change the limit on the maximum number of posted form values?
...an't find any information on the relationship between number of values and CPU time consumed per request in an attack...
– Tao
Jan 24 '12 at 11:05
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endsWith in JavaScript
...is.length - s.length) == s;
}
using lastIndexOf just creates unnecessary CPU loops if there is no match.
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list.clear() vs list = new ArrayList(); [duplicate]
...me of the list will be in both versions, and
your heap / GC parameters and CPU.
These make it hard to predict which will be better. But my intuition is that the difference will not be that great.
Two bits of advice on optimization:
Don't waste time trying to optimize this ... unless the applic...
Python: List vs Dict for look up table
... than both list and set for large data sets, running python 2.7.3 on an i7 CPU on linux:
python -mtimeit -s 'd=range(10**7)' '5*10**6 in d'
10 loops, best of 3: 64.2 msec per loop
python -mtimeit -s 'd=dict.fromkeys(range(10**7))' '5*10**6 in d'
10000000 loops, best of 3: 0.0759 usec per loop
py...