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How to compute the similarity between two text documents?
...
If I were to average all of the values outside of the diagonal of 1's, would that be a sound way of getting a single score of how similar the four documents are to each other? If not, is there a better way of determining overall similarity betwe...
bpftrace教程【官方】 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
bpftrace教程【官方】bpftrace_tutorial该教程通过12个简单小节帮助你了解bpftrace的使用。每一小节都是一行的命令，你可以立马运行并看到运行效果。该教程系列用来介绍bpftrace的概念。关于bpftrace的完整参考，见bpftr 该教程通过12...
Why compile Python code?
...ou invoke with python main.py is recompiled every time you run the script. All imported scripts will be compiled and stored on the disk.
Important addition by Ben Blank:
It's worth noting that while running a
compiled script has a faster startup
time (as it doesn't need to be
compiled), i...
Django Passing Custom Form Parameters to Formset
...m functools import partial, wraps
from django.forms.formsets import formset_factory
ServiceFormSet = formset_factory(wraps(ServiceForm)(partial(ServiceForm, affiliate=request.affiliate)), extra=3)
I think this is the cleanest approach, and doesn't affect ServiceForm in any way (i.e. by making it ...
What are the “standard unambiguous date” formats for string-to-date conversion in R?
...te (+1). However, the error message "standard unambiguous format" is ironically ambiguous, to which the 23 previous questions attest. A more direct error message like, "format not recognized, see documentation" might improve user experience. Also, I don't believe "01/01/2000" is ISO-8601 ("2000-01-0...
How do you UrlEncode without using System.Web?
I am trying to write a windows client application that calls a web site for data. To keep the install to a minimum I am trying only use dlls in the .NET Framework Client Profile . Trouble is that I need to UrlEncode some parameters, is there an easy way to do this without importing System.Web.dll w...
Linux 进程卡住了怎么办？ - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...发现 ls 卡住了。
通过下面的命令可以看到 ls 卡在了 vfs_fstatat 调用上，它会给 FUSE 设备发送 getattr 请求，在等待回应。而 JuiceFS 客户端进程已经被我们停掉了，所以它就卡住了：
$ cat /proc/`pgrep ls`/stack
[<ffffffff813277c7>] request_w...
jQuery AJAX file upload PHP
...ript to look like this:
$('#upload').on('click', function() {
var file_data = $('#sortpicture').prop('files')[0];
var form_data = new FormData();
form_data.append('file', file_data);
alert(form_data);
$.ajax({
url: 'uploa...
UILabel with text of two different colors
...ike this:
NSMutableAttributedString *text =
[[NSMutableAttributedString alloc]
initWithAttributedString: label.attributedText];
[text addAttribute:NSForegroundColorAttributeName
value:[UIColor redColor]
range:NSMakeRange(10, 1)];
[label setAttributedText: text];
...
How to see which flags -march=native will activate?
I'm compiling my C++ app using GCC 4.3. Instead of manually selecting the optimization flags I'm using -march=native , which in theory should add all optimization flags applicable to the hardware I'm compiling on. But how can I check which flags is it actually using?
...