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Cross cutting concern example
What is a good example of a cross-cutting concern ? The medical record example on the wikipedia page seems incomplete to me.
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How do I automatically scroll to the bottom of a multiline text box?
...scroll when the user can't see the textbox.
It seems that the alternative method from the other answers also don't work in this case. One way around it is to perform additional scrolling on the VisibleChanged event:
textBox.VisibleChanged += (sender, e) =>
{
if (textBox.Visible)
{
...
Pickle incompatibility of numpy arrays between Python 2 and 3
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This seems like some sort of incompatibility. It's trying to load a "binstring" object, which is assumed to be ASCII, while in this case it is binary data. If this is a bug in the Python 3 unpickler, or a "misuse" of the pickler by numpy, I d...
Applying a function to every row of a table using dplyr?
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As of dplyr 0.2 (I think) rowwise() is implemented, so the answer to this problem becomes:
iris %>%
rowwise() %>%
mutate(Max.Len= max(Sepal.Length,Petal.Length))
Non rowwise alternative
Five years (!) later this answer still gets a lot of traffic. Since...
Python: try statement in a single line
...thing not to know whether a variable exists in Python, like you would in some other dynamic languages. The safer way (and the prevailing style) is to set all variables to something. If they might not get set, set them to None first (or 0 or '' or something if it is more applicable.)
If you do ass...
How to unzip files programmatically in Android?
...e format they were in the zipped file. Please post your knowledge and help me out.
14 Answers
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Efficiently test if a port is open on Linux?
...as the file descriptor because 0,1,2 are stdin, stdout, and stderr. 5 is sometimes used by Bash for child processes, so 3,4,6,7,8, and 9 should be safe.
As per the comment below, to test for listening on a local server in a script:
exec 6<>/dev/tcp/127.0.0.1/445 || echo "No one is listening!...
Rename package in Android Studio
How do you rename packages in the new IDE Android Studio, based on IntelliJ IDEA?
52 Answers
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Get the time difference between two datetimes
I know I can do anything and some more envolving Dates with momentjs. But embarrassingly, I'm having a hard time trying to do something that seems simple: geting the difference between 2 times.
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How to select from subquery using Laravel Query Builder?
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In addition to @delmadord's answer and your comments:
Currently there is no method to create subquery in FROM clause, so you need to manually use raw statement, then, if necessary, you will merge all the bindings:
$sub = Abc::where(..)->groupBy(..); // Eloquent Build...