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What does mysql error 1025 (HY000): Error on rename of './foo' (errorno: 150) mean?

... You usually get this error if your tables use the InnoDB engine. In that case you would have to drop the foreign key, and then do the alter table and drop the column. But the tricky part is that you can't drop the foreign key using the column na...
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ASP.NET MVC Ajax Error handling

... If the server sends some status code different than 200, the error callback is executed: $.ajax({ url: '/foo', success: function(result) { alert('yeap'); }, error: function(XMLHttpRequest, textStatus, errorThrown) { alert('oops, something bad happened')...
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receiving error: 'Error: SSL Error: SELF_SIGNED_CERT_IN_CHAIN' while using npm

I am using npm v1.0.104/node 0.6.12 on ubuntu - I am receiving the error copied below while attempting to install any new modules via npm (I tested socket.io earlier using http, not https though & am wondering if that could have resulted in the issue with npm/unsigned certs). The error pops up once...
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error LNK2019: 无法解析的外部符号_socket,该符号在函数 中被引用 - C/C+...

error LNK2019: 无法解析的外部符号_socket,该符号在函数 中被引用1>NetClient.obj : error LNK2019: 无法解析的外部符号 _closesocket@4,该符号在函数 _main 中被引用1>NetClient.obj : error L...1>NetClient.obj : error LNK2019: 无法解析的外部符号 _closesocket@...
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How to use ELMAH to manually log errors

... since ELMAH 1.0: try { some code } catch(Exception ex) { Elmah.ErrorLog.GetDefault(HttpContext.Current).Log(new Elmah.Error(ex)); } ELMAH 1.2 introduces a more flexible API: try { some code } catch(Exception ex) { Elmah.ErrorSignal.FromCurrentContext().Raise(ex); } There i...
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Logging Clientside JavaScript Errors on Server [closed]

Im running a ASP.NET Site where I have problems to find some JavaScript Errors just with manual testing. 8 Answers ...
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Error installing libv8: ERROR: Failed to build gem native extension

... I use that. It compiles ok, but i still have errors when running 'bundle' – Sucrenoir Feb 20 '14 at 10:29 10 ...
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PHP parse/syntax errors; and how to solve them

Everyone runs into syntax errors. Even experienced programmers make typos. For newcomers, it's just part of the learning process. However, it's often easy to interpret error messages such as: ...
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Generate JSON string from NSDictionary in iOS

...) -(NSString*) bv_jsonStringWithPrettyPrint:(BOOL) prettyPrint { NSError *error; NSData *jsonData = [NSJSONSerialization dataWithJSONObject:self options:(NSJSONWritingOptions) (prettyPrint ? NSJSONWritingPrettyPrinted : 0) ...
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How to clear jQuery validation error messages?

...tion editUser() is called on click of 'Edit User' button, which displays error messages. 29 Answers ...