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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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Is a DIV inside a TD a bad idea?
It seems like I heard/read somewhere that a <div> inside of a <td> was a no-no. Not that it won't work, just something about them not being really compatible based on their display type. Can't find any evidence to back up my hunch, so I may be totally wrong.
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Why does PEP-8 specify a maximum line length of 79 characters? [closed]
...to stop people arguing about inconsequential formatting rules, and get on with writing good, consistently formatted code. Sure, no one really thinks that 79 is optimal, but there's no obvious gain in changing it to 99 or 119 or whatever your preferred line length is. I think the choices are these: f...
C++ code file extension? .cc vs .cpp [closed]
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At the end of the day it doesn't matter because C++ compilers can deal with the files in either format. If it's a real issue within your team, flip a coin and move on to the actual work.
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Quickly reading very large tables as dataframes
...s a dataframes in R. read.table() has a lot of convenient features, but it seems like there is a lot of logic in the implementation that would slow things down. In my case, I am assuming I know the types of the columns ahead of time, the table does not contain any column headers or row names, an...
Can a constructor in Java be private?
...ign anti-pattern, which I would advise against you using. Another, more legitimate use, is in delegating constructors; you can have one constructor that takes lots of different options that is really an implementation detail, so you make it private, but then your remaining constructors delegate to i...
Difference between 'struct' and 'typedef struct' in C++?
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In C++, there is only a subtle difference. It's a holdover from C, in which it makes a difference.
The C language standard (C89 §3.1.2.3, C99 §6.2.3, and C11 §6.2.3) mandates separate namespaces for different categories of identifiers, including tag identifiers (f...
Can't connect to localhost on SQL Server Express 2012 / 2016
... to localhost. I tried localhost\SQLExpress and Windows authentication but it gives me an error message saying cannot connect. Am I missing something here? I've used SQL Server 2008 before and I've never had issues connecting to localhost. It seems that it can't even find it. Also in the Services I ...
Android View shadow
...this:
android:background="@drawable/abc_menu_dropdown_panel_holo_light"
It looks like this:
Hope it will be helpful
Edit
The option above is for the older versions of Android Studio so you may not find it. For newer versions:
android:background="@android:drawable/dialog_holo_light_frame"
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How to get an IFrame to be responsive in iOS Safari?
... problem is that when you have to use IFrames to insert content into a website, then in the modern web-world it is expected that the IFrame would be responsive as well. In theory it's simple, simply aider use <iframe width="100%"></iframe> or set the CSS width to iframe { width: 100%;...