大约有 8,591 项符合查询结果(耗时:0.0190秒) [XML]

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E11000 duplicate key error index in mongodb mongoose

... I am explaining to a 5-year-old , so everyone can understand . I have an app.I want people to register with their email,password and phone number . In my MongoDB database , I want to identify people uniquely based on both their phone numbers and email - so this means that both the phone number an...
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MySQL “incorrect string value” error when save unicode string in Django

... answer needs way, way, way more upvotes. Thanks! The real problem is your application may run fine for years until someone tries to enter a 4byte character. – Michael Bylstra Apr 30 '14 at 3:44 ...
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Fat models and skinny controllers sounds like creating God models [closed]

...ding a lot of blogs which advocate the fat models and skinny controllers approach, esp. the Rails camp. As a result the routers is basically just figuring out what method to call on what controller and all the controller method does is call the corresponding method on the model and then bring up t...
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Error during SSL Handshake with remote server

I have Apache2 (listening on 443) and a web app running on Tomcat7 (listening on 8443) on Ubuntu . 3 Answers ...
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Is it possible to change a UIButtons background color?

... & alpha). I defn'ed 2 color arrays, one for each state, and chose the appropriate one in drawRect based on the button state. – daver Aug 13 '13 at 2:25 ...
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Cannot insert explicit value for identity column in table 'table' when IDENTITY_INSERT is set to OFF

...is: SET IDENTITY_INSERT student ON If you getting this error on your web application or you using entity framework then first run this query on SQL server and Update your entity model (.edmx file) and build your project and this error will be resolved ...
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Objective-C: Property / instance variable in category

... fixed link for Associated Objects: developer.apple.com/library/ios/#documentation/cocoa/Conceptual/… – MechEthan Jan 4 '12 at 20:22 5 ...
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Twitter bootstrap modal-backdrop doesn't disappear

...it sends an AJAX request. My problem is that the modal-backdrop doesn't disappear. The Modal dialog does disappear correctly, but instead "modal-backdrop in" that creates the opacity on the screen remain ...
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Postgres: clear entire database before re-creating / re-populating from bash script

...s. As the documentation clearly states here postgresql.org/docs/9.4/static/app-pgdump.html, you need to use --clean on pg_restore for archived backups. – Kikin-Sama Feb 1 '15 at 22:33 ...
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Text Progress Bar in the Console [closed]

I wrote a simple console app to upload and download files from an FTP server using the ftplib. 31 Answers ...