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How to define a two-dimensional array?
...e as well, but it is no longer recommended for any use, and may be removed from numpy in the future.
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Mixins vs. Traits
..., MB {
bar():void {
foo();
}
}
This will call foo():void from MA
On the other hand while using Traits, composing class has to resolve conflicts.
Class C mixins TA, TB {
bar():void {
foo();
}
}
This code will raise conflict (two definitions of foo():void).
ad 3....
Shell script to delete directories older than n days
... the directory; the {} part is where the find result gets substituted into from the previous part.
Alternatively, use:
find /path/to/base/dir/* -type d -ctime +10 | xargs rm -rf
Which is a bit more efficient, because it amounts to:
rm -rf dir1 dir2 dir3 ...
as opposed to:
rm -rf dir1; rm ...
Apply a function to every row of a matrix or a data frame
...
(Here, the function applied normalizes every row to 1.)
Note: The result from the apply() had to be transposed using t() to get the same layout as the input matrix A.
A <- matrix(c(
0, 1, 1, 2,
0, 0, 1, 3,
0, 0, 1, 3
), nrow = 3, byrow = TRUE)
t(apply(A, 1, function(x) x / sum(x) ))
R...
When should I use jQuery deferred's “then” method and when should I use the “pipe” method?
...});
In both cases you have to iterate over the list and extract the value from each object.
Wouldn't it be better to somehow extract the values beforehand so that you don't have to do this in both callbacks individually? Yes! And that's what we can use .pipe() for:
deferred.pipe(function(result) {
...
Vagrant ssh authentication failure
...0.1'
If still does not work try this:
Remove insecure_private_key file from c:\Users\USERNAME\.vagrant.d\insecure_private_key
Run vagrant up (vagrant will be generate a new insecure_private_key file)
In other cases, it is helpful to just set forward_agent in Vagrantfile:
Vagrant::Config.run d...
Using variables inside a bash heredoc
...ost.
local=$(uname)
ssh -t remote <<:
echo "$local is the value from the host which ran the ssh command"
# Prevent here doc from expanding locally; remote won't see backslash
remote=\$(uname)
# Same here
echo "\$remote is the value from the host we ssh:ed to"
:
...
ViewPager and fragments — what's the right way to store fragment's state?
...r.instantiateItem(View, int) and save a reference to the fragment returned from the super call before returning it (it has the logic to find the fragment, if already present).
For a fuller picture, have a look at some of the source of FragmentPagerAdapter (short) and ViewPager (long).
...
Passing HTML to template using Flask/Jinja2
...
You can also declare it HTML safe from the code:
from flask import Markup
value = Markup('<strong>The HTML String</strong>')
Then pass that value to the templates and they don't have to |safe it.
...
Using MVC HtmlHelper extensions from Razor declarative views
...not load type 'System.Web.WebPages.Instrumentation.InstrumentationService' from assembly 'System.Web.WebPages, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'." when hovering @using System.Web.Mvc. Any ideas?
– JoeBrockhaus