大约有 47,000 项符合查询结果（耗时：0.0600秒） [XML]
Python 2.7 getting user input and manipulating as string without quotations
...
Use raw_input() instead of input():
testVar = raw_input("Ask user for something.")
input() actually evaluates the input as Python code. I suggest to never use it. raw_input() returns the verbatim string entered by the user.
...
Cast Int to enum in Java
...
Try MyEnum.values()[x] where x must be 0 or 1, i.e. a valid ordinal for that enum.
Note that in Java enums actually are classes (and enum values thus are objects) and thus you can't cast an int or even Integer to an enum.
...
How can I search for a multiline pattern in a file?
...
Why don't you go for awk:
awk '/Start pattern/,/End pattern/' filename
share
|
improve this answer
|
follow
...
Is Chrome's JavaScript console lazy about evaluating arrays?
...
Thanks for the comment, tec. I was able to find an existing unconfirmed Webkit bug that explains this issue: https://bugs.webkit.org/show_bug.cgi?id=35801 (EDIT: now fixed!)
There appears to be some debate regarding just how much ...
Collection that allows only unique items in .NET?
... there a collection in C# that will not let you add duplicate items to it? For example, with the silly class of
7 Answers
...
Multi-statement Table Valued Function vs Inline Table Valued Function
...sed my original statement. He is correct, there will be a difference in performance between an inline table valued function (ITVF) and a multi-statement table valued function (MSTVF) even if they both simply execute a SELECT statement. SQL Server will treat an ITVF somewhat like a VIEW in that it wi...
Calling shell functions with xargs
...ted out by @Sasha.
Here is an example why you should not use the embedded format:
$ echo '$(date)' | xargs -I {} bash -c 'echo_var "{}"'
Sun Aug 18 11:56:45 CDT 2019
Another example of why not:
echo '\"; date\"' | xargs -I {} bash -c 'echo_var "{}"'
This is what is output using the safe forma...
The model used to open the store is incompatible with the one used to create the store
...u can't just add new entity to the data base and go ahead - you need to perform migration!
For those who doesn't want to dig into documentation and is searching for a quick fix:
Open your .xcdatamodeld file
click on Editor
select Add model version...
Add a new version of your model (the new group...
Run a single migration file
...
I had to create an instance of the migration object before I could call up. e.g. AddFoos.new.up
– Bentleyo
Oct 30 '12 at 5:43
...
Does Python optimize tail recursion?
...l Calls (2009-04-27)
You can manually eliminate the recursion with a transformation like this:
>>> def trisum(n, csum):
... while True: # Change recursion to a while loop
... if n == 0:
... return csum
... n, csum = n - 1, csum + n # U...