大约有 40,000 项符合查询结果（耗时：0.0580秒） [XML]
How to decorate a class?
...ython 2.7, (and @wraps, which maintains the original function's docstring, etc.):
def dec(klass):
old_foo = klass.foo
@wraps(klass.foo)
def decorated_foo(self, *args ,**kwargs):
print('@decorator pre %s' % msg)
old_foo(self, *args, **kwargs)
print('@decorator pos...
What is a web service endpoint?
.../foo/ShoppingWebservice/Toys, IP-Address:8080/foo/ShoppingWebservice/Books etc. - What is the /Toys, /Books part called ? Are they also called endpoints or resources ?
– MasterJoe
Jul 24 '17 at 18:24
...
How to efficiently compare two unordered lists (not sets) in Python?
...plementation details across versions, how many duplicates are in the data, etc.)
– Raymond Hettinger
Oct 21 '16 at 18:03
...
Batch script to delete files
...ike this:
set olddir=%CD%
cd /d "path of folder"
del "file name/ or *.txt etc..."
cd /d "%olddir%"
How this works:
set olddir=%CD% sets the variable "olddir" or any other variable name you like to the directory
your batch file was launched from.
cd /d "path of folder" changes the current direct...
App Inventor 2 Encrypt.Security 安全性扩展：MD5哈希，SHA1和SHA256哈希...
...ypt.Security 安全性扩展
这是关于App Inventor和Thunkable安全性的扩展，它提供MD5哈希，SHA1和SHA256哈希，AES加密/解密，RSA加密/解密，BASE64编码/解码方法。
权限
此扩展程序不需要任何权限。
事件
OnErrorOccured
抛出任何异常时将触...
Debugging in Clojure? [closed]
...hen the programme's execution reaches that point, with all locals in scope etc. A couple of relevant links: The Clojure debug-repl, Clojure debug-repl tricks, how 'bout a debug-repl (on the Clojure Google group), debug-repl on Clojars.
swank-clojure does an adequate job of making SLIME's built-in...
mongo group query how to keep fields
...
Why do you need {$first: '$age'} etc.? Is it possible to just have age: $age?
– lightalchemist
Dec 16 '17 at 8:04
5
...
Connect Java to a MySQL database
... obtain connections from it, same as above:
Connection conn = dataSource.getConnection();
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("SELECT ID FROM USERS");
...
rs.close();
stmt.close();
conn.close();
...
What is the difference between a mutable and immutable string in C#?
...a string like Substring, Remove, Replace, concatenation using '+' operator etc will create a new string and return it.
See the following program for demonstration -
string str = "mystring";
string newString = str.Substring(2);
Console.WriteLine(newString);
Console.WriteLine(str);
This will print...
How many concurrent AJAX (XmlHttpRequest) requests are allowed in popular browsers?
...test is finished, you can see if it took half, took third, took a quarter, etc of the total time, deducting which was the parallelism on the calls to the server. This is not strict, nor precise, but is nice to see in real time how ajaxs calls are completed (seeing the incoming cross). And is a very ...