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How do I get the key at a specific index from a Dictionary in Swift?
I have a Dictionary in Swift and I would like to get a key at a specific index.
10 Answers
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count vs length vs size in a collection
From using a number of programming languages and libraries I have noticed various terms used for the total number of elements in a collection.
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Real World Example of the Strategy Pattern
I've been reading about the OCP principal and how to use the strategy pattern to accomplish this.
17 Answers
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Two way/reverse map [duplicate]
I'm doing this switchboard thing in python where I need to keep track of who's talking to whom, so if Alice --> Bob, then that implies that Bob --> Alice.
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Create web service proxy in Visual Studio from a WSDL file
My application needs to talk to a web service that hasn't got an online WSDL definition. The developers however supplied me with a WSDL file.
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Count how many files in directory PHP
I'm working on a slightly new project. I wanted to know how many files are in a certain directory.
15 Answers
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Go install fails with error: no install location for directory xxx outside GOPATH
No matter what structure the project is in this always fails with the same message. Go build works perfectly.
13 Answers
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BLE（一）概述&工作流程&常见问题 - 创客硬件开发 - 清泛IT社区，...
...一为一个王国，并引入了基督教。蓝牙技术开发者Jim Kardach于1997年提出用Bluetooth这个名词，据说他当时正在读一本名为The Long Ships的小说，讲述的就是维京人和Harald Bluetooth国王的故事。他认为蓝牙可以把各种不同的通信协议统一...
Why does the order of the loops affect performance when iterating over a 2D array?
Below are two programs that are almost identical except that I switched the i and j variables around. They both run in different amounts of time. Could someone explain why this happens?
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Last non-empty cell in a column
Does anyone know the formula to find the value of the last non-empty cell in a column, in Microsoft Excel?
23 Answers
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