大约有 45,000 项符合查询结果（耗时：0.0649秒） [XML]
Get Substring - everything before certain char
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Please do them a favor and add error checking as well assuming he plans to make a function out of this :)
– Josh
Dec 7 '09 at 2:51
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Get list of a class' instance methods
... When i try print TestClass.new.instance_methods, i get this error my_class.rb:10:in <main>: undefined method instance_methods for #<TestClass:0x96b9d20> (NoMethodError)
– Vladimir Tsukanov
Jun 24 '11 at 14:04
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...rnatively, please check this thread for possible workarounds: browser.msie error after update to jQuery 1.9.1
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Unzipping files in Python
... @MylesHollowed import zipfile.ZipFile generates ModuleNotFoundError: No module named 'zipfile.ZipFile'; 'zipfile' is not a package in 3.6.5. I am open to it being operator error on my part, but I don't know what it is.
– MikeF
Feb 26 at 16:38
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Transferring an app to another Firebase account
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after 7th step it says Error: The update cannot be completed. Group accounts are not permitted as owners on projects.
– Lukas Liesis
Jan 4 '17 at 19:09
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python design patterns [closed]
...nd the primitive Null value.
This object just eats the lack of attribute error, and you can avoid checking for their existence.
It's nothing more than
class Null(object):
def __init__(self, *args, **kwargs):
"Ignore parameters."
return None
def __call__(self, *args, **k...
Explicitly set Id with Doctrine when using “AUTO” strategy
...ion: 1452 Cannot add or update a child row: a foreign key constraint fails errors. Downvoted
– ioleo
Sep 13 '14 at 11:53
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What does it mean by select 1 from table?
...T clause cannot refer to any column, otherwise you would (correct) get the error, "Column is invalid in select because it is not contained in the GROUP BY" etc.
Therefore, a literal value must be used (because SQL doesn't allow a resultset with zero columns -- why?!) and the literal value 1 (INTEG...
Difference between @import and link in CSS
...se it seems MSIE9 issues two incorrect requests to the server, getting 404 errors I could do without:
[ip] - - [21/Dec/2019:05:49:28 +0000] "GET /screen.css HTTP/1.1" 200 2592 "https://ssb22.user.srcf.net/zhimo/"; "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0; Trident/5.0)" ssb22...
Difference between int[] array and int array[]
...s bad coding style, although the compiler will almost certainly catch your error the moment you try to use d.
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