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How to check for file existence [duplicate]
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exists? is now depreciated.
– Mark Davies
Sep 25 '17 at 10:34
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What is the difference between SQL Server 2012 Express versions?
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it used to be like that, now there are no more technicalities :D
– Alberto Rivelli
Mar 11 '16 at 14:32
add a comment
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A hex viewer / editor plugin for Notepad++? [closed]
...lines in Notepad++)
Out of curiosity I installed the hex plugin again and now it works.
Note that this is on a fresh install of Windows 7 64 bit.
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Missing Javascript “.map” file for Underscore.js when loading ASP.NET web page [duplicate]
...t of a ASP.NET web site running on Azure. It's run fine for quite a while now. Out of the blue, I am suddenly having a problem with the browser trying to download a ".map" for Underscore.js. I did some reading and apparently JQuery creates ".map" files as debugging aids for Javascript source file...
Is there a way to make GHC provide the type class constraints of typed holes?
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This is now fixed in GHC 8.0 thanks to @DominiqueDevriese's GHC ticket.
Due to extended type defaulting, this isn't immediately obvious in GHCi. With your example,
> show _
<interactive>:7:6: error:
• Found hole: ...
Weird behavior with objects & console.log [duplicate]
... value at left was snapshotted when logged, value below was evaluated just now.
to let you know what you're looking at.
One trick for logging in these cases is to log the individual values:
console.log(obj.foo, obj.bar, obj.baz);
Or JSON encode the object reference:
console.log(JSON.stringify...
记一次数据库表自增长（Auto Increment）故障 - 数据库(内核) - 清泛网 - ...
...INSERT ON test
FOR EACH ROW
BEGIN
INSERT INTO seq (created) VALUES (NOW());
SET NEW.id = LAST_INSERT_ID();
END;
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问题到这里似乎已经解决了，不过在咨询了 @linux流浪猫 之后，意外得到了一个很简单的答案：只要删除问题数据后，重启一下服...
Do I need Content-Type: application/octet-stream for file download?
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No.
The content-type should be whatever it is known to be, if you know it. application/octet-stream is defined as "arbitrary binary data" in RFC 2046, and there's a definite overlap here of it being appropriate for entities whose sole intended purpose is to be saved to di...
Import text file as single character string
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Alas "read_file" does not appear in stringr now. :( cran.r-project.org/web/packages/stringr/stringr.pdf
– Michael Lloyd Lee mlk
May 26 '15 at 14:41
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User recognition without cookies or local storage
...ookies
Session Cookies
3rd Party Cookies
Flash Cookies (most people don't know how to delete these)
Web Bugs (less reliable because bugs get fixed, but still useful)
PDF Bug
Flash Bug
Java Bug
Browsers
Click Tracking (many users visit the same series of pages on each visit)
Browsers Finger Pri...