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How to create a MySQL hierarchical recursive query
I have a MySQL table which is as follows:
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Understanding ibeacon distancing
Trying to grasp a basic concept of how distancing with ibeacon (beacon/ Bluetooth-lowenergy/BLE) can work. Is there any true documentation on how far exactly an ibeacon can measure. Lets say I am 300 feet away...is it possible for an ibeacon to detect this?
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How to get Twitter-Bootstrap navigation to show active link?
I'm not understanding how Twitter Bootstrap does active links for the navigation. If I have a regular navigation like this (with ruby on rails linking):
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What is the difference between `throw new Error` and `throw someObject`?
I want to write a common error handler which will catch custom errors thrown on purpose at any instance of the code.
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Do I have to guard against SQL injection if I used a dropdown?
I understand that you should NEVER trust user input from a form, mainly due to the chance of SQL injection.
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What does LayoutInflater in Android do?
What is the use of LayoutInflater in Android?
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What is the proper declaration of main?
What is the proper signature of the main function in C++? What is the correct return type, and what does it mean to return a value from main ? What are the allowed parameter types, and what are their meanings?
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How to write an inline IF statement in JavaScript?
How can I use an inline if statement in JavaScript? Is there an inline else statement too?
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Optional Parameters in Go?
Can Go have optional parameters? Or can I just define two functions with the same name and a different number of arguments?
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Default constructor vs. inline field initialization
What's the difference between a default constructor and just initializing an object's fields directly?
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