大约有 44,692 项符合查询结果（耗时：0.0594秒） [XML]
Check if a Bash array contains a value
...advantage of not needing to loop over all the elements (at least not explicitly). But since array_to_string_internal() in array.c still loops over array elements and concatenates them into a string, it's probably not more efficient than the looping solutions proposed, but it's more readable.
if [[...
How to break a line of chained methods in Python?
...
You could use additional parenthesis:
subkeyword = (
Session.query(Subkeyword.subkeyword_id, Subkeyword.subkeyword_word)
.filter_by(subkeyword_company_id=self.e_company_id)
.filter_by(subkeyword_word=subkeyword_word)
...
Email validation using jQuery
I'm new to jQuery and was wondering how to use it to validate email addresses.
35 Answers
...
How to search and replace globally, starting from the cursor position and wrapping around the end of
When I search with the / Normal-mode command:
6 Answers
6
...
What to do on TransactionTooLargeException
I got a TransactionTooLargeException . Not reproducible. In the docs it says
38 Answers
...
How to use sessions in an ASP.NET MVC 4 application?
I am new to ASP.NET MVC. I have used PHP before and it was easy to create a session and select user records based on the current session variables.
...
Python dictionary from an object's fields
... you know if there is a built-in function to build a dictionary from an arbitrary object? I'd like to do something like this:
...
How can I find the method that called the current method?
...ered parsing the stack trace, but I am hoping to find a cleaner more explicit way, something like Assembly.GetCallingAssembly() but for methods.
...
How to calculate a logistic sigmoid function in Python?
...
This should do it:
import math
def sigmoid(x):
return 1 / (1 + math.exp(-x))
And now you can test it by calling:
>>> sigmoid(0.458)
0.61253961344091512
Update: Note that the above was mainly intended as a straight one-to-o...
Most efficient T-SQL way to pad a varchar on the left to a certain length?
...
This is simply an inefficient use of SQL, no matter how you do it.
perhaps something like
right('XXXXXXXXXXXX'+ rtrim(@str), @n)
where X is your padding character and @n is the number of characters in the resulting string (assuming you need the padding because you are dealing with ...