大约有 45,000 项符合查询结果(耗时:0.0670秒) [XML]

https://stackoverflow.com/ques... 

How to Free Inode Usage?

...ding the files open. If you do that and you still have a problem, let us know. By the way, if you're looking for the directories that contain lots of files, this script may help: #!/bin/bash # count_em - count files in all subdirectories under current directory. echo 'echo $(ls -a "$1" | wc -l) $...
https://stackoverflow.com/ques... 

What is the difference between varchar and varchar2 in Oracle?

... As for now, they are synonyms. VARCHAR is reserved by Oracle to support distinction between NULL and empty string in future, as ANSI standard prescribes. VARCHAR2 does not distinguish between a NULL and empty string, and never wil...
https://stackoverflow.com/ques... 

Difference between numpy.array shape (R, 1) and (R,)

... 1. The meaning of shapes in NumPy You write, "I know literally it's list of numbers and list of lists where all list contains only a number" but that's a bit of an unhelpful way to think about it. The best way to think about NumPy arrays is that they consist of two parts, ...
https://stackoverflow.com/ques... 

How to debug a Flask app

...rue) for the Werkzeug Debugger edit as mentioned below, and I should have known. share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

Fastest method to replace all instances of a character in a string [duplicate]

... "b", true); // bb "Hello???".replaceAll("?", "!"); // Hello!!! Let me know if you can break it, or you have something better, but make sure it can pass these 4 tests. share | improve this answer...
https://stackoverflow.com/ques... 

Declaration/definition of variables locations in ObjectiveC?

...that (and not declare a property) is to create a private variable, you can now do that in the implementation file as well and this is the preferred way. An @interface block in the implementation file is actually an Extension and can be used to forward declare methods (not needed anymore) and to (re...
https://stackoverflow.com/ques... 

How to check if a number is a power of 2

...that is, the result is true if and only if both its operands are true. Now let's take a look at how this all plays out: The function returns boolean (true / false) and accepts one incoming parameter of type unsigned long (x, in this case). Let us for the sake of simplicity assume that someone ...
https://stackoverflow.com/ques... 

“Collection was mutated while being enumerated” on executeFetchRequest

I'm stuck on a problem for hours now and having read everything about this on stackoverflow (and apply every advices found), I'm now officially in need for help. ;o) ...
https://stackoverflow.com/ques... 

Is there a way to chain multiple value converters in XAML?

...n't getting the credit you deserved (I'd accepted my own answer!), so I've now marked your answer as accepted. Only about 9 years late... :facepalm: – Mal Ross Aug 27 '19 at 13:54 ...
https://stackoverflow.com/ques... 

What are best practices for validating email addresses on iOS 2.0

... Read the RFC. Almost everyone that thinks they know how to parse/clean/validate an email address is wrong. http://tools.ietf.org/html/rfc2822 Section 3.4.1 is very useful. Notice dtext = NO-WS-CTL / ; Non white space controls ...