大约有 16,317 项符合查询结果(耗时:0.0221秒) [XML]
Iterating through a range of dates in Python
...t it starts to get Perl-one-linerish when you have a generator in a list comprehension.
22 Answers
...
How to deal with “java.lang.OutOfMemoryError: Java heap space” error?
I am writing a client-side Swing application (graphical font designer) on Java 5 . Recently, I am running into java.lang.OutOfMemoryError: Java heap space error because I am not being conservative on memory usage. The user can open unlimited number of files, and the program keeps the opened obj...
LEFT JOIN vs. LEFT OUTER JOIN in SQL Server
...
As per the documentation: FROM (Transact-SQL):
<join_type> ::=
[ { INNER | { { LEFT | RIGHT | FULL } [ OUTER ] } } [ <join_hint> ] ]
JOIN
The keyword OUTER is marked as optional (enclosed in square brackets). In this...
Why are C# 3.0 object initializer constructor parentheses optional?
It seems that the C# 3.0 object initializer syntax allows one to exclude the open/close pair of parentheses in the constructor when there is a parameterless constructor existing. Example:
...
The type 'string' must be a non-nullable type in order to use it as parameter T in the generic type
Why do I get Error "The type 'string' must be a non-nullable value type in order to use it as parameter 'T' in the generic type or method 'System.Nullable'"?
...
Why the switch statement cannot be applied on strings?
Compiling the following code and got the error of type illegal .
20 Answers
20
...
CSRF Token necessary when using Stateless(= Sessionless) Authentication?
...rotection when the application relies on stateless authentication (using something like HMAC)?
2 Answers
...
Remove all the elements that occur in one list from another
Let's say I have two lists, l1 and l2 . I want to perform l1 - l2 , which returns all elements of l1 not in l2 .
7 ...
Android TextView padding between lines
I have a TextView which displays a long text. I want to give some space between lines like in CSS with line-height property. How can I do it?
...
check if variable is dataframe
when my function f is called with a variable I want to check if var is a pandas dataframe:
2 Answers
...