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Error: “dictionary update sequence element #0 has length 1; 2 is required” on Django 1.4
...e I forgot to put name= on the last argument of the url (or path in Django 2.0+) function call.
For instance, the following functions throw the error from the question:
url(r'^foo/(?P<bar>[A-Za-z]+)/$', views.FooBar.as_view(), 'foo')
path('foo/{slug:bar}/', views.FooBar, 'foo')
But these a...
为维护国家安全 中国限制出口无人机和高性能计算机 - 资讯 - 清泛网 - 专注...
...聚合数字计算机性能专门设计、单链路单向通信速率超过2.0GB/s的外部互连设备，都在限制范围内。
2011年10月27日，我国第一台完全采用国产CPU处理器的千万亿次超级计算机——神威蓝光，在国家超级计算济南中心投入使用。
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Allow User to input HTML in ASP.NET MVC - ValidateInput or AllowHtml
...e validation mode used. See MSDN:
<httpRuntime requestValidationMode="2.0" />
Edit Sept 2014: As per sprinter252 comments:
You should now use the [AllowHtml] attribute. See below from MSDN:
For ASP.NET MVC 3 applications, when you need to post HTML back to
your model, don’t use Va...
Do Google refresh tokens expire?
...lace. As far as, I understand, the access token that is issued using oAuth 2.0, can then be used to request a refresh token. Why not just have a permanent access token, and cut out the extra call for the refresh token.
– Charles Robertson
Dec 15 '15 at 22:24
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Find() vs. Where().FirstOrDefault()
... predates the other methods. List<T> was added with generics in .NET 2.0, and Find was part of the API for that class. Where and FirstOrDefault were added as extension methods for IEnumerable<T> with Linq, which is a later .NET version. I cannot say with certainty that if Linq existed wi...
Displaying a message in iOS which has the same functionality as Toast in Android
...calling:
showToast(controller: self, message : "This is a test", seconds: 2.0)
Output:
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Matplotlib scatter plot with different text at each data point
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In version's earlier than matplotlib 2.0, ax.scatter is not necessary to plot text without markers. In version 2.0 you'll need ax.scatter to set the proper range and markers for text.
y = [2.56422, 3.77284, 3.52623, 3.51468, 3.02199]
z = [0.15, 0.3, 0.45, 0.6, ...
Remove trailing zeros
...string? You can use one of these:
string.Format("{0:G29}", decimal.Parse("2.0044"))
decimal.Parse("2.0044").ToString("G29")
2.0m.ToString("G29")
This should work for all input.
Update Check out the Standard Numeric Formats I've had to explicitly set the precision specifier to 29 as the docs cl...
Android error: Failed to install *.apk on device *: timeout
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The USB 2.0 spec (and probably others, but that is the only one I've read) explicitly forbid "extension cables" on the grounds that it made it possible to exceed the maximum cable length and making for unreliable operation. In other...
Linux反编译全攻略 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...libc.so.6:
0x0d696911 0x00 03 GLIBC_2.1
0x0d696910 0x00 02 GLIBC_2.0
Sections:
Idx Name Size VMA LMA File off Algn
0 .interp 00000013 080480f4 080480f4 000000f4 2**0
CONTENTS, ALLOC, LOAD, READONLY, DATA
1 .note.ABI-tag 0000...