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How does the const constructor actually work?

...ting-widgets-b7ac56dbbeb1 "Use const to build your widgets Without const, selective rebuilding of the sub-tree does not happen. Flutter creates a new instance of each widget in the sub-tree and calls build() wasting precious cycles especially if your build methods are heavy." –...
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How can I unit test Arduino code?

...tiplex four 7 segment displays, one port driving the segments and a second selecting the display. The display code interfaces with the displays via SetSegmentData(char) and SetDisplay(char). I can mock these in my C++ test rig and check that I get the data I expect. For the target I use #define so t...
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Clustered vs Non-Clustered

... Some db with some nasty selects, joins in a stored procedure - only diffrence is the index INDEXES - clustered vs nonclustered 891 rows 10 sec NONCLUSTERED OR 891 rows 14 sec CLUSTERED ...
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What's the best way to get the last element of an array without deleting it?

...as mainly produced with a lot of stubbornness and patience but the general selection and multi-line edit functions of Sublime text editor helped. regenerating it took almost a day, so if I need to do it again I will probably write something that converts the output of all 210 docker executions to a ...
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How do I choose grid and block dimensions for CUDA kernels?

... The blocksize is usually selected to maximize the "occupancy". Search on CUDA Occupancy for more information. In particular, see the CUDA Occupancy Calculator spreadsheet. sh...
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Is SHA-1 secure for password storage?

...") under the assumption that many user passwords will be in that specially selected space. Hence salting will at least prevent the attacker from using pre-computed tables, in particular pre-computed rainbow tables. This assumes that the attacker will be able to break one password or two; we do not ...
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How did Google manage to do this? Slide ActionBar in Android application

...would like to add sub menu items (for example check facebook app). So when selecting a menu item with a sub item, the menu needs to animate to the right. Any tips for implementing this? – Luciano Oct 10 '12 at 14:36 ...
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Use of var keyword in C#

...oing things like var customers = whatever; var query = from c in customers select stuff it doesn't matter what the exact type of 'customers' is. It's obvious how you can use it, and that's enough. And if the actual type is cumbersome, it's worthwhile to suppress it. – Joren ...
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Is XSLT worth it? [closed]

...f there is a lot of logic, but mostly of forms which are built in to XSLT (select all elements which look like blah, and for each one output blah), it's likely to be quite a friendly environment. If you fancy thinking XML-ishly at all times, then give XSLT 2 a go. Otherwise, I'd say that if your fa...
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Parsing JSON using Json.net

... writing to console): var tuples = JObject.Parse(myJsonString)["objects"].Select(item => item.ToTuple()).ToList(); tuples.ForEach(t => Console.WriteLine("{0}: ({1},{2})", t.Item1, t.Item2, t.Item3)); share |...