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Installing SciPy with pip
...
Prerequisite:
sudo apt-get install build-essential gfortran libatlas-base-dev python-pip python-dev
sudo pip install --upgrade pip
Actual packages:
sudo pip install numpy
sudo pip install scipy
Optional packages:
sudo pip install matplotlib OR sudo apt-get install python-matplotlib
su...
从源代码剖析Mahout推荐引擎 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
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以UserCF的推荐算法为例，官方建议我们的开发过程：
图片摘自Mahout in Action
从上图中我们可以看到，算法是被模块化的，通过1,2,3,4的过程进行方法调用。
程序代码：
public class UserCF {
final static int NEIGHBORHOOD_NUM = 2;
...
Convert Data URI to File then append to FormData
...ert a dataURI to a Blob:
function dataURItoBlob(dataURI) {
// convert base64/URLEncoded data component to raw binary data held in a string
var byteString;
if (dataURI.split(',')[0].indexOf('base64') >= 0)
byteString = atob(dataURI.split(',')[1]);
else
byteString =...
Preview an image before it is uploaded
...lt);
}
reader.readAsDataURL(input.files[0]); // convert to base64 string
}
}
$("#imgInp").change(function() {
readURL(this);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form runat="server">
<input ...
Pandas DataFrame column to list [duplicate]
I am pulling a subset of data from a column based on conditions in another column being met.
4 Answers
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OS detecting makefile
... Make treats unset the same as empty, which will cause a jump to the uname-based block. You just need to add a FreeBSD check there.
– Trevor Robinson
Oct 2 '15 at 16:53
3
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Shell script to send email [duplicate]
...JECT} | file -bi - | cut -d"=" -f2)
SUB_B64=$(echo ${SUBJECT} | uuencode --base64 - | tail -n+2 | head -n+1)
NB_FILES=$(echo ${FILES} | wc -w)
NB=0
cat <<EOF | /usr/sbin/sendmail -t
From: ${FROM}
To: ${TO}
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary=frontier
Subject: =?${SUB_CHA...
Store JSON object in data attribute in HTML jQuery
...oring serialized data can be solved by converting the serialized string to base64.
A base64 string can be accepted just about anywhere with no fuss.
Take a look at:
btoa()
The WindowOrWorkerGlobalScope.btoa() method creates a base-64 encoded
ASCII string from a String object in which e...
重构理论及实践——用工厂模式重构c++后台代码 - C/C++ - 清泛网 - 专注C/C...
...到本例，从可维护性的角度，消息cmd和processor factory是硬编码耦合的，当前情况下没什么问题，但脑洞开一点，业务规模增加到足够大时，框架和消息可能由两拨人来维护，此时是不是用注册回调的观察者模式，可以使业务的人...
Favicon not showing up in Google Chrome [duplicate]
...est you to still have the normal favicon. This has solved my issue on IE.
Base64 approach
Found another solution for this which works great! I simply added my favicon as Base64 Encoded Image directly inside the tag like this:
<link href="data:image/x-icon;base64,AAABAAIAEBAAAAEAIABoBAAAJgAAAC...