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C++中判断文件、目录是否存在的几种方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
C++中判断文件、目录是否存在的几种方法在我们平时的编程时，经常需要判断文件或者目录是否存在，相对来说判断文件的存在性比较简单，目录则比较复杂。下面就详细的介绍几种方法。...在我们平时的编程时，经常需要判断...
How can I launch Safari from an iPhone app?
This might be a rather obvious question, but can you launch the Safari browser from an iPhone app?
7 Answers
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Get type name without full namespace
I have the following code:
6 Answers
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Get environment variable value in Dockerfile
I'm building a container for a ruby app. My app's configuration is contained within environment variables (loaded inside the app with dotenv ).
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What is the difference between Amazon S3 and Amazon EC2 instance?
I need to create a web application using php mysql and html. The no.of requests and data will be very high. I need Amazon server space.
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Calculate distance between 2 GPS coordinates
How do I calculate distance between two GPS coordinates (using latitude and longitude)?
29 Answers
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How to find out which package version is loaded in R?
I am in a process of figuring out how to use my university cluster. It has 2 versions of R installed. System wide R 2.11 (Debian 6.0) and R 2.14.2 in non-standard location.
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How to construct a std::string from a std::vector?
Short of (the obvious) building a C style string first then using that to create a std::string, is there a quicker/alternative/"better" way to initialize a string from a vector of chars?
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hash function for string
I'm working on hash table in C language and I'm testing hash function for string.
9 Answers
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Check substring exists in a string in C
I'm trying to check whether a string contains a substring in C like:
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