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How do I send a JSON string in a POST request in Go

I tried working with Apiary and made a universal template to send JSON to mock server and have this code: 4 Answers ...
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AJAX in Chrome sending OPTIONS instead of GET/POST/PUT/DELETE?

...cally my requests are "cross domain." The site is served on localhost:6120 and the service I'm making AJAX requests to is on 57124. This closed jquery bug defines the issue, but not a real fix. ...
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Multiple aggregations of the same column using pandas GroupBy.agg()

Is there a pandas built-in way to apply two different aggregating functions f1, f2 to the same column df["returns"] , without having to call agg() multiple times? ...
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How many GCC optimization levels are there?

...e even more) -Ofast (optimize very aggressively to the point of breaking standard compliance) -Og (Optimize debugging experience. -Og enables optimizations that do not interfere with debugging. It should be the optimization level of choice for the standard edit-compile-debug cycle, offeri...
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How to think in data stores instead of databases?

As an example, Google App Engine uses Google Datastore, not a standard database, to store data. Does anybody have any tips for using Google Datastore instead of databases? It seems I've trained my mind to think 100% in object relationships that map directly to table structures, and now it's hard t...
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What does “Content-type: application/json; charset=utf-8” really mean?

...om the content itself, i.e. you can't necessarily just look at the content and know what to do with it. That's what HTTP headers are for, they tell the recipient what kind of content they're (supposedly) dealing with. Content-type: application/json; charset=utf-8 designates the content to be in JSO...
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Interface vs Abstract Class (general OO)

...nterviews where I've been asked about the differences between an Interface and an Abstract class. I have explained every aspect of them I could think of, but it seems they are waiting for me to mention something specific, and I don't know what it is. ...
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How does a language expand itself? [closed]

I am learning C++ and I've just started learning about some of Qt 's capabilities to code GUI programs. I asked myself the following question: ...
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Run an Application in GDB Until an Exception Occurs

I'm working on a multithreaded application, and I want to debug it using GDB. 4 Answers ...
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What's the difference between unit, functional, acceptance, and integration tests? [closed]

What is the difference between unit, functional, acceptance, and integration testing (and any other types of tests that I failed to mention)? ...