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How to write a simple database engine [closed]

...ems one by one: How to store the data internally: you should have a data file containing your database objects and a caching mechanism to load the data in focus and some data around it into RAM assume you have a table, with some data, we would create a data format to convert this table into a bin...
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How can I index a MATLAB array returned by a function without first assigning it to a local variable

...is will be faster than gnovice's answer, but I haven't checked (Use the profiler!!!). That being said, you also have to include these function definitions somewhere. I personally have made them independent functions in my path, because they are super useful. These functions and others are now avail...
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Is there any difference between “!=” and “” in Oracle Sql?

... != is easier to store in an XML file! – Mark McLaren Jul 19 '17 at 7:02 Is ...
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What's the best way to unit test protected & private methods in Ruby?

... Just reopen the class in your test file, and redefine the method or methods as public. You don't have to redefine the guts of the method itself, just pass the symbol into the public call. If you original class is defined like this: class MyClass private ...
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Best practice for storing and protecting private API keys in applications [closed]

... storing a key in gradle file is secure? – Google Dec 4 '17 at 8:26 4 ...
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Why don't they teach these things in school? [closed]

...theory. The good schools teach both theory (data structures, algorithms, etc.) as well as practice (unit testing, version control, etc.). This requires an appropriate mixture of faculty so that both sides of this coin can be properly taught. A faculty composed entirely of theoretical types with ...
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SAML: Why is the certificate within the Signature?

...sking? I know this works perfectly well on Shibboleth SP. The SP metadata file just needs to have <KeyDescriptor use="signing"> elements for the IdP certificates that will be accepted by the SP. – jbindel Feb 10 '16 at 15:50 ...
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Upgrade Node.js to the latest version on Mac OS

...st Node.js v0.8.1. But after downloading and installing the latest package file from nodejs.org, I found that system is still using v0.6.16 instead of v0.8.1 when I typed "node -v" in a terminal. Is there any step that I have missed? Or, should I thoroughly uninstall the old version before installin...
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Understanding ibeacon distancing

...asurement, you always get different results (because of noise, distortion, etc) and very often results form Gaussian distribution. There are two main parameters describing Gaussian curve: mean (which is easy to understand, it's value for which peak of the curve occurs). standard deviation, which s...
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Python exit commands - why so many and when should each be used?

...ry is being used after the program is run. quit(): Closes the python file. Summary Basically they all do the same thing, however, it also depends on what you are doing it for. I don't think you left anything out and I would recommend getting used to quit() or exit(). You would use sys.e...