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Dual emission of constructor symbols
Today, I discovered a rather interesting thing about either g++ or nm ...constructor definitions appear to have two entries in libraries.
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Calculating Distance between two Latitude and Longitude GeoCoordinates
I'm calculating the distance between two GeoCoordinates. I'm testing my app against 3-4 other apps. When I'm calculating distance, I tend to get an average of 3.3 miles for my calculation whereas other apps are getting 3.5 miles. It's a big difference for the calculation I'm trying to perform. Are t...
How do I reattach to a detached mosh session?
...osh/issues/394
To kill the detached session, use the PID number displayed in that message (that's the 'XXXX' part.) For example, if you see --
Mosh: You have a detached Mosh session on this server (mosh [12345]).
And can run this command:
kill 12345
Also, to close all mosh connections you can...
How to step through Python code to help debug issues?
In Java/C# you can easily step through code to trace what might be going wrong, and IDE's make this process very user friendly.
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How to build a Debian/Ubuntu package from source?
...d I'd like to build a Debian/Ubuntu package for it. The package is present in the repositories, but:
10 Answers
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How to apply shell command to each line of a command output?
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It's probably easiest to use xargs. In your case:
ls -1 | xargs -L1 echo
The -L flag ensures the input is read properly. From the man page of xargs:
-L number
Call utility for every number non-empty lines read.
A line ending with a space continues ...
Replace words in a string - Ruby
I have a string in Ruby:
4 Answers
4
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Check if a string is null or empty in XSLT
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test="categoryName != ''"
Edit: This covers the most likely interpretation, in my opinion, of "[not] null or empty" as inferred from the question, including it's pseudo-code and my own early experience with XSLT. I.e., "What is the equivalent of the following Java?":
!(categoryName =...
Remove all subviews?
When my app gets back to its root view controller, in the viewDidAppear: method I need to remove all subviews.
15 Answers...
Detect current device with UI_USER_INTERFACE_IDIOM() in Swift
What is the equivalent of UI_USER_INTERFACE_IDIOM() in Swift to detect between iPhone and iPad?
17 Answers
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