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TypeError: 'dict_keys' object does not support indexing
...on3.x, d.keys() returns a dict_keys object which behaves a lot more like a set than a list. As such, it can't be indexed.
The solution is to pass list(d.keys()) (or simply list(d)) to shuffle.
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How efficient can Meteor be while sharing a huge collection among many clients?
... runs a
publish function. The publish function's job is to figure out the set
of documents that its client should have and send each document property
into the merge box. It runs once for each new subscribing client. You
can put any JavaScript you want in the publish function, such as
arbitrarily...
SQL中使用update inner join和delete inner join；Oracle delete join替代...
... join和delete inner join；Oracle delete join替代方案UpdateUpdate XXX set XXX where 这种写法大家肯定都知道，才发现update和delete居然支持inner join的update方式，这个在表间关联来...Update
Update XXX set XXX where 这种写法大家肯定都知道，才发现update...
PHP中的错误处理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...了。错误很常见，比如Notice，Warning等等。此时一般使用set_error_handler...程序只要在运行，就免不了会出现错误！或早或晚，只是时间问题罢了。
错误很常见，比如Notice，Warning等等。此时一般使用set_error_handler来处理：
<?php
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bash HISTSIZE vs. HISTFILESIZE?
...re copied/appended to $HISTFILE from that "list".
If HISTFILESIZE is set, then after this operation, it is ensured
that only $HISTFILESIZE lines (latest) exist in $HISTFILE . And
when the shell starts, the "list" is initialized from $HISTFILE upto
a maximum of $HISTSIZE commands.
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Drag and drop files into WPF
...}
}
Also, don't forget to actually hook up the event in XAML, as well as setting the AllowDrop attribute.
<StackPanel Name="ImagePanel" Drop="ImagePanel_Drop" AllowDrop="true">
...
</StackPanel>
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Generate a random double in a range
... Ah I see. Basically, multiplying a number that can take a finite set of values doesn't change the size of that set.
– Kartik Chugh
Aug 22 '19 at 14:27
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google oauth2 redirect_uri with several parameters
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You cannot add anything to the redirect uri, redirect uri is constant as set
in the app settings of Oauth.
eg :http://www.example.com/redirect.html
To pass several parameters to your redirect uri, have them stored in state
parameter before calling Oauth url, the url after authorization will send t...
Emacs mode for Stack Overflow's markdown
...Text which lets you edit textareas with an external editor. Here is how to set it up:
Install markdown-mode. If you use Debian or Ubuntu you can install it by issuing
sudo apt-get install emacs-goodies-el
or if you're on emacs 24 (or have package.el on emacs 23) and Marmalade or Melpa you can i...
Using CMake with GNU Make: How can I see the exact commands?
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It is convenient to set the option in the CMakeLists.txt file as:
set(CMAKE_VERBOSE_MAKEFILE ON)
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