大约有 26,000 项符合查询结果(耗时:0.0756秒) [XML]

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How to run a background task in a servlet based web application?

...ning in my application, but I'm not getting how to do it. My servlet has a method which gives counts of the user from a database on a daily basis as well as the total count of the users from the whole database. So I want to keep the servlet continuously running for that. ...
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What does the `forall` keyword in Haskell/GHC do?

...cify types for code inside where clauses. It makes the b in val :: b the same one as the b in foob :: forall a b. (b -> b) -> b -> (a -> b) -> Maybe a -> b. A confusing point: you may hear that when you omit the forall from a type it is actually still implicitly there. (from Norma...
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How can I remove the search bar and footer added by the jQuery DataTables plugin?

... As good as @antpaw comment is, and seems to work in most cases, it doesn't work if there is filtering going on for each column, like in this example :datatables.net/release-datatables/extras/FixedColumns/… . Be aware! – Jan...
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Python “SyntaxError: Non-ASCII character '\xe2' in file”

I am writing some python code and I am receiving the error message as in the title, from searching this has to do with the character set. ...
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Command Prompt - How to add a set path only for that batch file executing?

... Just like any other environment variable, with SET: SET PATH=%PATH%;c:\whatever\else If you want to have a little safety check built in first, check to see if the new path exists first: IF EXIST c:\whatever\else SET PATH=%PATH%;c:\whatever\else I...
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How to set layout_gravity programmatically?

... For some reasons params.gravity = 80 (It should be BOTTOM, by te Docs) is just not working. I got some space betwen the bottom of the View and the Text. Its not so Bottom-aligned... – Adam Varhegyi ...
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Prevent a webpage from navigating away using JavaScript

... Using onunload allows you to display messages, but will not interrupt the navigation (because it is too late). However, using onbeforeunload will interrupt navigation: window.onbeforeunload = function() { return ""; } Note: An empty string is returned becau...
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How to remove extension from string (only real extension!)

I'm looking for a small function that allows me to remove the extension from a filename. 17 Answers ...
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How do I add 1 day to an NSDate?

...ch better solution than the selected answer – Justin Meiners Jul 9 '12 at 16:54 19 +1 for using D...
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Dealing with float precision in Javascript [duplicate]

I have a large amount of numeric values y in javascript. I want to group them by rounding them down to the nearest multiple of x and convert the result to a string. ...