大约有 40,000 项符合查询结果（耗时：0.0390秒） [XML]
搭建高可用mongodb集群（一）——配置mongodb - 大数据 & AI - 清泛网 - 专...
...安装程序包
wget http://fastdl.mongodb.org/linux/mongodb-linux-x86_64-2.4.6.tgz
#解压下载的压缩包
tar xvzf mongodb-linux-x86_64-2.4.6.tgz
#进入mongodb程序执行文件夹
cd mongodb-linux-x86_64-2.4.6/bin/
3、启动单实例mongodb
mongod --dbpath /data/mongodbtest/...
Dashed line border around UIView
...nother method if you like sublayers. In your custom view's init, put this (_border is an ivar):
_border = [CAShapeLayer layer];
_border.strokeColor = [UIColor colorWithRed:67/255.0f green:37/255.0f blue:83/255.0f alpha:1].CGColor;
_border.fillColor = nil;
_border.lineDashPattern = @[@4, @2];
[self....
Which is better in python, del or delattr?
.... del foo.bar compiles to two bytecode instructions:
2 0 LOAD_FAST 0 (foo)
3 DELETE_ATTR 0 (bar)
whereas delattr(foo, "bar") takes five:
2 0 LOAD_GLOBAL 0 (delattr)
3 LOAD_FAST 0 (foo)
...
Simple insecure two-way data “obfuscation”?
...public class SimpleAES
{
// Change these keys
private byte[] Key = __Replace_Me__({ 123, 217, 19, 11, 24, 26, 85, 45, 114, 184, 27, 162, 37, 112, 222, 209, 241, 24, 175, 144, 173, 53, 196, 29, 24, 26, 17, 218, 131, 236, 53, 209 });
// a hardcoded IV should not be used for production AES...
How to serve static files in Flask
...entation Flask describes returning static files. Yes, I could use render_template but I know the data is not templatized. I'd have thought send_file or url_for was the right thing, but I could not get those to work. In the meantime, I am opening the files, reading content, and rigging up a ...
How do you loop through currently loaded assemblies?
...{ get; set; }
}
private static Dictionary<string, Assembly> _dependentAssemblyList;
private static List<MissingAssembly> _missingAssemblyList;
/// <summary>
/// Intent: Get assemblies referenced by entry assembly. Not recursive.
/// </summary>
...
How can I do a line break (line continuation) in Python?
...s are acceptable:
with open('/path/to/some/file/you/want/to/read') as file_1, \
open('/path/to/some/file/being/written', 'w') as file_2:
file_2.write(file_1.read())
Another such case is with assert statements.
Make sure to indent the continued line appropriately. The preferre...
Useful code which uses reduce()? [closed]
...[[1, 2, 3], [4, 5], [6, 7, 8]] into [1, 2, 3, 4, 5, 6, 7, 8].
reduce(list.__add__, [[1, 2, 3], [4, 5], [6, 7, 8]], [])
List of digits to a number
Goal: turn [1, 2, 3, 4, 5, 6, 7, 8] into 12345678.
Ugly, slow way:
int("".join(map(str, [1,2,3,4,5,6,7,8])))
Pretty reduce way:
reduce(lambda a,d...
How can I maintain fragment state when added to the back stack?
...sion 1. Use version 2)
public class FragmentA extends Fragment {
View _rootView;
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if (_rootView == null) {
// Inflate the layout for this fragment
_...
What are metaclasses in Python?
... the 'class' statement) by calling the metaclass. Combined with the normal __init__ and __new__ methods, metaclasses therefore allow you to do 'extra things' when creating a class, like registering the new class with some registry or replace the class with something else entirely.
When the class st...