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Difference between an API and SDK

...ring in your house. an SDK is implementation tooling. It's like a kit that allows** you to build something custom to hook up to the telephone system or electrical wiring. *Anything can use an API. Some APIs have security provisions to require license keys, authentication, etc. which may prohibit c...
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Error “can't use subversion command line client : svn” when opening android project checked out from

...svn command because it's not on PATH, and it doesn't know where svn is installed. One way to fix is to edit the PATH environment variable: add the directory that contains svn.exe. You will need to restart Android Studio to make it re-read the PATH variable. Another way is to set the absolute path ...
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Does Django scale? [closed]

...erformance. That would be 432,000 hits per hour. Response times aren't small (our transactions are large) but there's no degradation from our baseline performance as the load increases. We're using Apache front-ending Django and MySQL. The OS is Red Hat Enterprise Linux (RHEL). 64-bit. We use ...
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How to define optional methods in Swift protocol?

...an take advantage of powerful generics system. You can always be sure that all requirements are met when encountering types that conform to such protocol. It's always either concrete implementation or default one. This is how "interfaces" or "contracts" behave in other languages. Disadvantages F...
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Anatomy of a “Memory Leak”

... seen is in Chapter 7 of the free Foundations of Programming e-book. Basically, in .NET a memory leak occurs when referenced objects are rooted and thus cannot be garbage collected. This occurs accidentally when you hold on to references beyond the intended scope. You'll know that you have leaks w...
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Cython: “fatal error: numpy/arrayobject.h: No such file or directory”

...... you don't need to even open a command line if you use IPython ... it's all very convenient. In your case, try running these commands in IPython or in a normal Python script: import numpy import pyximport pyximport.install(setup_args={"script_args":["--compiler=mingw32"], ...
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Spring Boot: How can I set the logging level with application.properties?

... Normally anything that you can do on the command line works in an external config file. So debug=true would do it I think. That flag is a little bit special because the logging has to be initialized very early, but I think that w...
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Why is Node.js single threaded? [closed]

...rvers every client request is instantiated on a new thread. But in Node.js all the clients run on the same thread (they can even share the same variables!) I understand that I/O operations are event-based so they don't block the main thread loop. ...
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Reliable way for a Bash script to get the full path to itself [duplicate]

...ing a script that isn't coming from a file in an accessible file system at all (which is perfectly possible), is not catered to there (or in any of the other answers I've seen). share | improve this...
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C++ Singleton design pattern

... design pattern that is lazy-evaluated, guaranteed-destruction, not-technically-thread-safe: Can any one provide me a sample of Singleton in c++? Here is an updated C++11 implementation of the Singleton design pattern that is lazy-evaluated, correctly-destroyed, and thread-safe. class S { pu...