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1. Summary
All operations involved in this article are verified
Please indicate the source of reprint: http://blog.csdn.net/cywosp/article/details/7428769
1. Summary
All operations involved in this article are verified on the 64-bit Ubuntu server 11.10 system. This article references openstackswift's
This series of articles focuses on learning and researching OpenStack Swift, including environment building, principles, architecture, monitoring, and performance.(1) OpenStack + Three-node Swift cluster + HAProxy + UCARP installation and
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Delegate (delegation)
Fault handling (Error handling)
Key value observation (Key-value observing)
Target-action Mode (target-action)
Type matching and uniform specification (introspection)
API
10. OpenStack Object Storage Service (SWIFT)
configuration: I added two hard drives (SDB,SDC) to the compute node for storage, and the compute node in my build is the storage node, because the computer can't pull more virtual ...
Brief
Google, Facebook and Uber's three internet giants have met in London to discuss Swift's position in their respective development strategies after Apple opened open source Swift at the end of last year. News from the industry recently, Google intends
Basic Operators
An operator is a special symbol or phrase that is used to examine, manipulate, and combine values. For example, add a plus sign (+) that adds two values (let i = 1 + 2). More complex such as logic and (&&), self-increment (++i:
//: Playground-noun:a Place where people can playImport Uikitvar str="Hello, playground."println ("---- character");/*characters: Swift and OC characters are not the same, Swift is in double quotation marks. The character type in Swift is not the
Swift calls objective-C requires a bridging header file named -Bridging-Header.h, as shown in. The purpose of bridging the header file is to build a bridge for swift to call the objective-C object, which must be named "-Bridging-Header.h ", we need
First:Use Func to declare a function, using the name and arguments to invoke the function. Use to specify the function return value.Use a tuple to return multiple values.The number of arguments to the function is variable, with an array to fetch
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