mixins

问题 Suppose I've parsed my mixin parameters and colours are provided using rgba function. Now I would like to mix two of those colours, but LESS mix function requires parameter instances of type color . What I tried ...and doesn't work calling color("rgba(0,0,0,.5)") mix(@first, ~"@{second}") where @second is a string like rgba(0,0,0,0.5) How do I convert to color? 回答1: I'm afraid you won't find a built in function to do this in LESS. The color() functions argument needs to be a hexadecimal or

问题 Suppose I've parsed my mixin parameters and colours are provided using rgba function. Now I would like to mix two of those colours, but LESS mix function requires parameter instances of type color . What I tried ...and doesn't work calling color("rgba(0,0,0,.5)") mix(@first, ~"@{second}") where @second is a string like rgba(0,0,0,0.5) How do I convert to color? 回答1: I'm afraid you won't find a built in function to do this in LESS. The color() functions argument needs to be a hexadecimal or

问题 Description I wonder if the code I am showing can be considered as an example of policy-based design in Python. Also, I would like to know if have you seen python modules using something like this example so I can learn from them? I wrote more details and examples about this approach in a post. Recently I needed something like policy-based design for a python module I was working on. I found a similar question in this forum, but it was closed, and I was not able to add a comment. Let me give

问题 I've been following the tutorial here, except as I'm not creating a code snippet web-tool, I'm creating a RPG character manager, I've been swapping out ' snippet ' with ' mage '. The other major difference is that my Mage only has a hold of users via their superclass NWODCharacter (this is so I can later on add other character types, like Werewolves and Vampires!) On accessing http://localhost:8000/users/ I get this error: AttributeError at /users/ 'User' object has no attribute 'mages'

问题 I have two files, one with module ToMix : module ToMix @module_var = "modulevar" def self.mix_function puts "mix_function SELF: #{@module_var}" end def mix_function puts "mix_function: #{@module_var}" end class MixClass attr_accessor :mixclassvar def initialize(value) @mixclassvar = value end end end which I want to mixin to the class TestInclude in the other file: class TestInclude require "ToMixFile" include ToMix end Could someone explain why the instance variable @module_var and methods

问题 When I run sass --watch app.sass:app.css terminal shows that changes have been detected to sass but won't compile to css. I am using Bourbon so all my .scss and .sass files are imported via mixins. ex. >>> Sass is watching for changes. Press Ctrl-C to stop. >>> Change detected to: css/2-modules/top-nav.scss 回答1: Make sure the file you are saving with an _filename.scss has been properly imported into the mainfile.scss . if you have not imported the _filename.scss it will detect a change but

问题 I'd like to additively build backgrounds in SASS/Compass, ignorant of the existing background string. I am able to accomplish by writing to a global var, but it seems sloppy. Pseudo: =mixin-add-icon // add a background icon =mixin-add-gradient-from-color($color: blue !default) // add a background gradient =mixin-add-texture-bg // add a bg texture a background: blue +mixin-add-texture-bg // this should take the existing bg and add texture to it &.selected +mixin-add-gradient-from-color()

问题 I have a written a mixin that overrides the POST and get_from_kwargs of CreateView . I am doing AJAX submission of my form. I see that get_from_kwargs is called by printing on the console. But none of the other methods such as post , form_valid or form_invalid is being called. I have placed print statements in these methods but none of them is being called. Here is my mixin: class PendFormMixin(object): form_hash_name = 'form_hash' pend_button_name = 'pend' def get_form_kwargs(self): """

问题 I'm thinking about creating a mixin form class so that I can add a common set of fields to a variety of otherwise very different forms. Just using it as a base class won't work because I want to be able to use other forms as base classes like so: class NoteFormMixin(object): note = forms.CharField() class MainForm(forms.Form): name = forms.CharField() age = forms.IntegerField() class SpecialForm(MainForm, NoteFormMixin): favorite_color = forms.CharField() My only question is: how does this

问题 I want to remove the clearfix class from my HTML and include a clearfix mixin in my SCSS (Rails 3.1 application). What is the best approach to this? I am thinking of just taking the HTML 5 Boilerplate clearfix and turning it into a mixin, then @including it within the CSS for elements that need clearfixing. Copied from HTML5 Boilerplate: /* The Magnificent Clearfix: Updated to prevent margin-collapsing on child elements. http://j.mp/bestclearfix */ .clearfix:before, .clearfix:after { content: