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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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REST API Login Pattern
I am creating a REST api, closely following apigee suggestions, using nouns not verbs, api version baked into the url, two api paths per collection, GET POST PUT DELETE usage, etc.
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What Java ORM do you prefer, and why? [closed]
It's a pretty open ended question. I'll be starting out a new project and am looking at different ORMs to integrate with database access.
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Visual Studio: How to show Overloads in IntelliSense?
... to view the overloads for a method is to actually edit the method by deleting the Parenthesis () and reopening them.
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How to join (merge) data frames (inner, outer, left, right)
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By using the merge function and its optional parameters:
Inner join: merge(df1, df2) will work for these examples because R automatically joins the frames by common variable names, but you would most likely want to specify merge(...
How to printf uint64_t? Fails with: “spurious trailing ‘%’ in format”
I wrote a very simple test code of printf uint64_t:
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pandas three-way joining multiple dataframes on columns
I have 3 CSV files. Each has the first column as the (string) names of people, while all the other columns in each dataframe are attributes of that person.
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How to do scanf for single char in C [duplicate]
In C:
I'm trying to get char from the user with scanf and when I run it the program don't wait for the user to type anything...
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Wrong requestCode in onActivityResult
I'm starting a new Activity from my Fragment with
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Mysql: Select rows from a table that are not in another
How to select all rows in one table that do not appear on another?
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