大约有 40,000 项符合查询结果（耗时：0.0356秒） [XML]
Rails layouts per action?
...he layout.
class MyController < ApplicationController
layout :resolve_layout
# ...
private
def resolve_layout
case action_name
when "new", "create"
"some_layout"
when "index"
"other_layout"
else
"application"
end
end
end
...
Python: using a recursive algorithm as a generator
...],string[:i]+string[i+1:] pairs. Then it would be: for letter,rest in first_letter_options(string): for perm in getPermuations(rest): yield letter+perm
– Thomas Andrews
Oct 14 '16 at 19:04
...
Getting time elapsed in Objective-C
...er to use Apple's function CACurrentMediaTime!
I also benchmarked the mach_timebase_info call and it takes approximately 19ns on my iPhone 6, so I removed the (not threadsafe) code which was caching the output of that call.
#include <mach/mach.h>
#include <mach/mach_time.h>
uint64_t g...
Adding custom radio buttons in android
...ransparent:
<RadioButton
android:id="@+id/radio0"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@null"
android:button="@drawable/yourbuttonbackground"
android:checked="true"
android:text="RadioButton1" />
If you would ...
Using Pylint with Django
...unning pylint add the following flag to the command:
--load-plugins pylint_django
Detailed blog post here.
share
|
improve this answer
|
follow
|
...
How can I have linebreaks in my long LaTeX equations?
...can be precisely controlled. e.g.
\begin{align*}
x&+y+\dots+\dots+x_100000000\\
&+x_100000001+\dots+\dots
\end{align*}
which would line up the first plus signs of each line... but obviously, you can set the alignments wherever you like.
...
Create unique constraint with null columns
...
Create two partial indexes:
CREATE UNIQUE INDEX favo_3col_uni_idx ON favorites (user_id, menu_id, recipe_id)
WHERE menu_id IS NOT NULL;
CREATE UNIQUE INDEX favo_2col_uni_idx ON favorites (user_id, recipe_id)
WHERE menu_id IS NULL;
This way, there can only be one combination...
What's the most elegant way to cap a number to a segment? [closed]
...a-library" answer but just in case you're using Lodash you can use .clamp:
_.clamp(yourInput, lowerBound, upperBound);
So that:
_.clamp(22, -10, 10); // => 10
Here is its implementation, taken from Lodash source:
/**
* The base implementation of `_.clamp` which doesn't coerce arguments.
*
* ...
Python - 'ascii' codec can't decode byte
...gt; u"你好".encode("utf8")
'\xe4\xbd\xa0\xe5\xa5\xbd'
>>> print _
你好
The other way is to decode from bytes to unicode.
In this direction, you have to know what the encoding is.
>>> bytes = '\xe4\xbd\xa0\xe5\xa5\xbd'
>>> print bytes
你好
>>> bytes.decode...
ASP.NET MVC 3: Override “name” attribute with TextBoxFor
...ame, use Name:
@Html.TextBoxFor(x => x.Data, new { Name = Model.Key + "_Data", id = Model.Key + "_Data" })
share
|
improve this answer
|
follow
|
...