大约有 30,000 项符合查询结果(耗时:0.0451秒) [XML]
Automatically plot different colored lines
... I want them to all be different colors. I have a kludged solution using a string 'rgbcmyk' and stepping through it for each separate plot, but I start having duplicates after 7 iterations. Is there an easier/more efficient way to do this, and with more color options?
...
On a CSS hover event, can I change another div's styling? [duplicate]
When I hover over a div or class with an id of "a", can I get the background color of a div or class with the id of "b" to change?
...
Validate uniqueness of multiple columns
Is there a rails-way way to validate that an actual record is unique and not just a column? For example, a friendship model / table should not be able to have multiple identical records like:
...
What is the easiest way to duplicate an activerecord record?
...record record, changing a single field in the process (in addition to the id ). What is the simplest way to accomplish this?
...
How to add Google Analytics Tracking ID to GitHub Pages
... but I am full of doubts right now about adding Google Analytics Tracking ID to GitHub page .
7 Answers
...
Adding a parameter to the URL with JavaScript
...arch based solution, but that depends completely on the length of the querystring and the index of any match
the slow regex method I benchmarked against for completions sake (approx +150% slower)
function insertParam2(key,value)
{
key = encodeURIComponent(key); value = encodeURIComponent(val...
How to set target hosts in Fabric file
...file.org/issues/show/138#change-1497) it is better to include user in host string (like produser@prod.server.com) instead of setting env.user.
– Mikhail Korobov
Feb 16 '11 at 0:45
...
How to set Default Controller in asp.net MVC 4 & MVC 5
...MapRoute(
"Default", // Route name
"{controller}/{action}/{id}", // URL with parameters*
new { controller = "Home", action = "Index",
id = UrlParameter.Optional }
);
as the default landing page. You can change that to be any route you wish.
routes.MapRoute(
...
Filtering for empty or NULL names in a queryset
...exclude(alias__isnull=True)
If you need to exclude null values and empty strings, the preferred way to do so is to chain together the conditions like so:
Name.objects.exclude(alias__isnull=True).exclude(alias__exact='')
Chaining these methods together basically checks each condition independent...
Extract a regular expression match
I'm trying to extract a number from a string.
12 Answers
12
...
