大约有 48,000 项符合查询结果（耗时：0.0676秒） [XML]
Scala: List[Future] to Future[List] disregarding failed futures
...st of Futures to a Future of List. I'm using Playframework, so ultimately, what I really want is a Future[Result] , but to make things simpler, let's just say Future[List[Int]] The normal way to do this would be to use Future.sequence(...) but there's a twist... The list I'm given usually has a...
Hidden features of Ruby
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What use would this ever serve? Just curious.
– Ed S.
Oct 1 '10 at 0:19
1
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Uninstall all installed gems, in OSX?
...$ sudo gem list --no-version | xargs sudo gem uninstall -ax
Depending on what you want, you may need to execute both, because "gem list" and "sudo gem list" provide independent lists.
Do not mix a normal "gem list" with a sudo-ed "gem uninstall" nor the other way around otherwise you may end up u...
Why not use exceptions as regular flow of control?
...r that programs are written for programmers first).
Moreover, this is not what compiler vendors expect. They expect exceptions to be thrown rarely, and they usually let the throw code be quite inefficient. Throwing exceptions is one of the most expensive operations in .NET.
However, some languages...
Best architectural approaches for building iOS networking applications (REST clients)
...esources and materials on this topic, but nevertheless I'm still confused. What is the best architecture for an iOS networked application? I mean basic abstract framework, patterns, which will fit every networking application whether it is a small app which only have a few server requests or a compl...
Parse XML using JavaScript [duplicate]
... Looking up and integrating OP's other questions' answers is what I call high-level SO game. I'm impressed, well done!
– maryisdead
Aug 10 '16 at 10:12
1
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string.Join on a List or other type
...he best way is to upgrade to .NET 4.0 where there is an overload that does what you want:
String.Join<T>(String, IEnumerable<T>)
If you can't upgrade, you can achieve the same effect using Select and ToArray.
return string.Join(",", a.Select(x => x.ToString()).ToArray());
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How to parse Excel (XLS) file in Javascript/HTML5
...rsers implemented in pure JS:
http://oss.sheetjs.com/js-xls/ (XLS files, what you wanted)
http://oss.sheetjs.com/js-xlsx/ (XLSX/XLSM/XLSB files)
Both pages are HTML5 File API-driven XLS/XLSX parsers (you can drag-drop your file and it will print out the data in the cells in a comma-separated lis...
How to see full query from SHOW PROCESSLIST
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localhost:41060 , what does 41060 stands for ? any guess ?
– Farveen Hassan
May 21 at 10:45
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Erasing elements from a vector
...me
vec.erase(std::remove(vec.begin(), vec.end(), number_in), vec.end());
What happens is that remove compacts the elements that differ from the value to be removed (number_in) in the beginning of the vector and returns the iterator to the first element after that range. Then erase removes these el...