att

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: How do I create a custom attribute to extend existing Authorize attribute in MVC? 回答1: Derive your class from AuthorizeAttribute. Override the OnAuthorization method. Add and set up a CacheValidationHandler. public void CacheValidationHandler( HttpContext context, object data, ref HttpValidationStatus validationStatus ) { validationStatus = OnCacheAuthorization( new HttpContextWrapper( context ) ); } public override void OnAuthorization( AuthorizationContext filterContext ) { if (filterContext == null) { throw new ArgumentNullException(

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Suppose I have a nested dictionary 'user_dict' with structure: Level 1: UserId (Long Integer) Level 2: Category (String) Level 3: Assorted Attributes (floats, ints, etc..) For example, an entry of this dictionary would be: user_dict[12] = { "Category 1": {"att_1": 1, "att_2": "whatever"}, "Category 2": {"att_1": 23, "att_2": "another"}} each item in "user_dict" has the same structure and "user_dict" contains a large number of items which I want to feed to a pandas DataFrame, constructing the series from the attributes. In this case a

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: What is the Wix ' KeyPath ' attribute? In particular, how does it apply to the following: <Component Id="ProgramMenuDir" Guid="*"> <RemoveFolder Id="ProgramMenuDir" On="uninstall" /> <RegistryValue Root="HKCU" Key="Software\CompName\AppName" Type="string" Value="" KeyPath="yes" /> </Component> 回答1: As explained by Rob Mensching : The KeyPath for a Component is a single resource that the Windows Installer uses to determine if a Component "exists" on a machine. This means that when Windows Installer decides whether to install your component,

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Hi I have a quick question. I didn't find answer in internet maybe someone of you can help me. So i want to save workbook as attachment but I don't know how lets see an example : from openpyxl import Workbook from openpyxl.cell import get_column_letter wb = Workbook(encoding='utf-8') dest_filename = 'file.xlsx' ws = wb.worksheets[0] ws.title = "range names" for col_idx in xrange(1, 40): col = get_column_letter(col_idx) for row in xrange(1, 600): ws.cell('%s%s'%(col, row)).value = '%s%s' % (col, row) ws = wb.create_sheet() ws.title = 'Pi' ws

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: Hi I have a quick question. I didn't find answer in internet maybe someone of you can help me. So i want to save workbook as attachment but I don't know how lets see an example : from openpyxl import Workbook from openpyxl.cell import get_column_letter wb = Workbook(encoding='utf-8') dest_filename = 'file.xlsx' ws = wb.worksheets[0] ws.title = "range names" for col_idx in xrange(1, 40): col = get_column_letter(col_idx) for row in xrange(1, 600): ws.cell('%s%s'%(col, row)).value = '%s%s' % (col, row) ws = wb.create_sheet() ws.title = 'Pi' ws

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I was planning on using NSAttributedString to highlight portions of strings with the matching query of a user's search. However, I can't find an iOS equivalent of NSBackgroundColorAttributeName ―there's no kCTBackgroundColorAttributeName . Does such a thing exist, similar to the way NSForegroundColorAttributeName becomes kCTForegroundColorAttributeName ? 回答1: No, such an attribute doesn't exist in Core Text, you'll have to draw your own rectangles underneath the text to simulate it. Basically, you'll have to figure out which rectangle(s) to

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: ... ]> &ha128; supposedly this is called a billion laughs DoS attack. does anyone know how it works? 回答1: The Billion Laughs attack is a denial-of-service attack that targets XML parsers. The Billion Laughs attack is also known as an XML bomb, or more esoterically, the exponential entity expansion attack. A Billion Laughs attack can occur even when using well-formed XML and can also pass XML schema validation. The vanilla Billion Laughs attack is illustrated in the XML file represented below. ]> &lol9; In this example, there are 10 different

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I'm doing the merge sort in python but I have a problem. When I try to insert the list from the console (one number per line which return a list of string) I cannot convert it in integers. Can you help me understanding the problem. import sys def mergeSort ( lista ): res = [] for i in lista [ 0 ]. split (): res . append ( int ( i )) if len ( res )> 1 : mid = len ( res ) //2 lefthalf = res [: mid ] righthalf = res [ mid :] mergeSort ( lefthalf ) mergeSort ( righthalf ) i = 0 j = 0 k = 0 while i < len ( lefthalf ) and j < len (

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to make a search form for one of my classes. The model of the form is: from django import forms from django.forms import CharField, ModelMultipleChoiceField, ModelChoiceField from books.models import Book, Author, Category class SearchForm(forms.ModelForm): authors = ModelMultipleChoiceField(queryset=Author.objects.all(),required=False) category = ModelChoiceField (queryset=Category.objects.all(),required=False) class Meta: model = Book fields = ["title"] And the view I'm using is: from django.shortcuts import render_to_response,

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have adapted one machine learning code for one my project.The code that worked fine on my laptop ,now makes problems on my desktop.I am checking all data frame columns for missing values. File "g100.py", line 11, in <module> print(dfs.columns[dfs.isna().any()].tolist()) AttributeError: 'DataFrame' object has no attribute 'isna' My installed panda versions and dependencies d.show_versions(as_json=False) INSTALLED VERSIONS ------------------ commit: None python: 3.6.3.final.0 python-bits: 64 OS: Linux OS-release: 4.13.0-37-generic machine: