大约有 40,000 项符合查询结果(耗时:0.0298秒) [XML]

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How to reset postgres' primary key sequence when it falls out of sync?

... If your application cares about gaps in sequences, your application is broken. Gaps in sequences are normal, and can occur due to unplanned database shutdowns, transaction rollbacks after errors, etc. – Craig Ri...
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PyLint “Unable to import” error - how to set PYTHONPATH?

...ry above your module, like this: [MASTER] init-hook='import sys; sys.path.append("/path/to/root")' (Or in other version of pylint, the init-hook requires you to change [General] to [MASTER]) Both of these options ought to work. Hope that helps. ...
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fatal error: malformed or corrupted AST file - Xcode

I get this error when building my app in the latest version of Xcode: 20 Answers 20 ...
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package R does not exist

...aded package R does not exist, it's killing me. The code is fine I have apps in the market running the code. 28 Answers...
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Advantage of creating a generic repository vs. specific repository for each object?

We are developing an ASP.NET MVC application, and are now building the repository/service classes. I'm wondering if there are any major advantages to creating a generic IRepository interface that all repositories implement, vs. each Repository having its own unique interface and set of methods. ...
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ImportError: Cannot import name X

...ally produces a tree of one-way dependencies and this is normally the best approach. But there are exceptions to this. C++ classes certainly can refer to one another circularly. (Although it is impossible for them to be composed of one another.) Without forward-declaration, this is a problem in Pyth...
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How to use/install gcc on Mac OS X 10.8 / Xcode 4.4

... SDK frameworks and headers. Many useful tools are included, such as the Apple LLVM compiler, linker, and Make. If you use Xcode, these tools are also embedded within the Xcode IDE, and can be installed on your system using the Downloads preferences pane within Xcode 4.3 and later. This p...
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Django - How to rename a model field using South?

...m): # Rename 'name' field to 'full_name' db.rename_column('app_foo', 'name', 'full_name') def backwards(self, orm): # Rename 'full_name' field to 'name' db.rename_column('app_foo', 'full_name', 'name') The first argument of db.rename_column is the table name...
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nFC Connect低功耗蓝牙APP工具的使用 - 创客硬件开发 - 清泛IT社区,为创新赋能!

nRF Connect是一款由NORDIC开发的专门用于低功耗蓝牙测试APP,仅支持安卓平台。这款APP可以扫描和探索低功耗蓝牙设备,并与它们进行通信。它支持许多蓝牙 SIG 采用的配置文件,以及Nordic Semiconductor或Google的Eddystone的设备固件更新...
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按键可见性的延时设置 - App Inventor 2 中文网 - 清泛IT社区,为创新赋能!

大家好,咨询请教一个问题, APP上面的 按键 当按下一个按键 设置2号按键可见性为假 (这个功能可以实现),但 在设定时间内,比如一个小时,或者更长时间后, 让原先的2号按键的可见性从原来的假 恢复成真 用“计时...