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苹果全球开发者大会:无硬件 iOS 9等三大系统更新 - 资讯 - 清泛网 - 专注C...
...应的服务也会在今年秋季正式登陆加拿大。苹果还在探讨如何让Apple Pay进入中国。
Swift 2 开源才是王道
Swift语言讲开放源代码,为APP编程带来更多可能。App Store目前有超过15000个应用是用Swift来开发的,越来越多的应用采用了苹...
Vim and Ctags tips and tricks [closed]
...ill look in the current directory for "tags", and work up the tree towards root until one is found. IOW, you can be anywhere in your source tree instead of just the root of it.
share
...
Creating functions in a loop
...Use a function factory to capture the current value of i in a closure
The root of your problem is that i is a variable that can change. We can work around this problem by creating another variable that is guaranteed to never change - and the easiest way to do this is a closure:
def f_factory(i):
...
How to export iTerm2 Profiles
...,
"Custom Command": "Yes",
"Command": "ssh root@555.66.77.88",
"Shortcut": "M",
"Tags": [
"LOCAL", "THATCOMPANY", "WORK", "NOCLOUD"
],
"Badge Text": "SRV1",
},
...
Converting an array of objects to ActiveRecord::Relation
...l as sorting them with a specific column(id for instance). Since I'm using MySQL, the field function could be helpful.
MyModel.where('id in (?)',ids).order("field(id,#{ids.join(",")})")
The SQL looks like:
SELECT ... FROM ... WHERE (id in (11,5,6,7,8,9,10))
ORDER BY field(id,11,5,6,7,8,9,10)
...
/data/user/0/xxxx/files(内部存储)和 /storage/emulated/0/Android/data...
...,与应用绑定,用户无法直接通过文件管理器访问(需 Root)。外部存储:位于用户可见的存储空间(如 /sdcard/),路径可能因设备而异(如部分设备显示为 /mnt/sdcard)。
2. 访问方式与 API(1) 内部存储 (/data/user/0/xxxx)API 获取路径...
Mongod complains that there is no /data/db folder
...ectory in the wrong place
/data/db means that it's directly under the '/' root directory, whereas you created 'data/db' (without the leading /) probably just inside another directory, such as the '/root' homedirectory.
You need to create this directory as root
Either you need to use sudo , e.g. s...
What are the risks of running 'sudo pip'?
... sudo. In other words, you run arbitrary Python code from the Internet as root. If someone puts up a malicious project on PyPI and you install it, you give an attacker root access to your machine. Prior to some recent fixes to pip and PyPI, an attacker could also run a man in the middle attack to i...
Organizing a multiple-file Go project [closed]
... directory under src. The only 3 spec-related directories are the 3 in the root of your GOPATH: bin, pkg, src . Underneath src, you can simply place your project mypack, and underneath that is all of your .go files including the mypack_test.go
go build will then build into the root level pkg and b...
Why do I need Transaction in Hibernate for read-only operations?
...nsactions can be optimized by DBs, but this of course is DB specific. E.g. MySQL added support for this only in InnoDB starting from 5.6.4 version.
If you're not using JDBC directly, but rather an ORM, that might be problematic. For instance Hibernate community says that working outside of transacti...