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海量数据相似度计算之simhash短文本查找 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...快的返回一个value，这个号称查找速度最快的数据结构是如何实现的呢？看下hashmap的内部结构：
如果我们需要得到key对应的value，需要经过这些计算，传入key，计算key的hashcode，得到7的位置；发现7位置对应的value还有好几个，...
Search in all files in a project in Sublime Text 3
...I had to fiddle a bit with the "Where:". I thought it was from the project root, but if the root is proj and I want to search in proj/src, I have to type proj/src in Where.
– Ivan
Dec 11 '13 at 17:12
...
Directory does not exist. Parameter name: directoryVirtualPath
...koverflow.com/a/115992/1876622
So my local folder structure was:
[Project Root]/Content/jquery-plugins // had files
[Project Root]/Scripts/jquery-plugins // had files
[Project Root]/Scripts/misc-plugins // empty folder
Whereas any clone / pull of my repository on the remote server was not getti...
Does SQLAlchemy have an equivalent of Django's get_or_create?
...ote that begin_nested automatically triggers a flush.
Note that if using MySQL, the transaction isolation level must be set to READ COMMITTED rather than REPEATABLE READ for this to work. Django's get_or_create (and here) uses the same stratagem, see also the Django documentation.
...
Copy file or directories recursively in Python
...of copying files and folders recursively. (Python 3.X)
import os, shutil
root_src_dir = r'C:\MyMusic' #Path/Location of the source directory
root_dst_dir = 'D:MusicBackUp' #Path to the destination folder
for src_dir, dirs, files in os.walk(root_src_dir):
dst_dir = src_dir.replace(root_src...
How do I load an org.w3c.dom.Document from XML in a string?
...me up with. It's mostly the same solution as before, augmented to get the root element down as a NodeList and using erickson's suggestion of using an InputSource instead for character encoding issues.
private String DOC_ROOT="root";
String xml=getXmlString();
Document xmlDoc=loadXMLFrom(xml);
Elem...
Pretty printing XML in Python
...not elem.tail.strip()):
elem.tail = j
return elem
root = ElementTree.parse('/tmp/xmlfile').getroot()
indent(root)
ElementTree.dump(root)
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How do I list all files of a directory?
... os
# Getting the current work directory (cwd)
thisdir = os.getcwd()
# r=root, d=directories, f = files
for r, d, f in os.walk(thisdir):
for file in f:
if file.endswith(".docx"):
print(os.path.join(r, file))
os.listdir(): get files in the current directory (Python 2)
...
Delete all local changesets and revert to tree
... even smarter approach is to use the revset language, and do:
% hg strip 'roots(outgoing())'
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What is the point of interfaces in PHP?
...ce IPersonService
{
public function Create($personObject);
}
class MySqlPerson implements IPersonService
{
public function Create($personObject)
{
// Create a new person in MySql database.
}
}
class MongoPerson implements IPersonService
{
public function Create($pers...