大约有 47,000 项符合查询结果(耗时:0.0555秒) [XML]

https://stackoverflow.com/ques... 

Cannot highlight all occurrences of a selected word in Eclipse

...C/C++ Write occurrences. But still when I select a word it won't highlight all occurrences of that specific word. 12 Answer...
https://stackoverflow.com/ques... 

NullPointerException in Java with no StackTrace

...a NullPointerException , but when I try to log the StackTrace (which basically ends up calling Throwable.printStackTrace() ), all I get is: ...
https://stackoverflow.com/ques... 

PHP Fatal error: Using $this when not in object context

... @Sarfraz No offense, but it is still wrong. You can call an instance method with ::. It is against E_STRICT, but it does work as long as the method body does not reference the instance scope, e.g. uses $this. Also, self::foo will not point to $this->foo. It references a clas...
https://stackoverflow.com/ques... 

Python: Ignore 'Incorrect padding' error when base64 decoding

... of which were base64 without padding: import base64 import re def decode_base64(data, altchars=b'+/'): """Decode base64, padding being optional. :param data: Base64 data as an ASCII byte string :returns: The decoded byte string. """ data = re.sub(rb'[^a-zA-Z0-9%s]+' % altcha...
https://stackoverflow.com/ques... 

Does ARC support dispatch queues?

...d as * Objective-C types when building with an Objective-C compiler. This allows * them to participate in ARC, in RR management by the Blocks runtime and in * leaks checking by the static analyzer, and enables them to be added to Cocoa * collections. * * NOTE: this requires explicit cancellati...
https://stackoverflow.com/ques... 

Why do we need a pure virtual destructor in C++?

... Probably the real reason that pure virtual destructors are allowed is that to prohibit them would mean adding another rule to the language and there's no need for this rule since no ill-effects can come from allowing a pure virtual destructor. Nope, plain old virtual is enough. If...
https://stackoverflow.com/ques... 

Conditional import of modules in Python

...ad of relying on the user; here's pySerial doing it as an example. serial/__init__.py import sys if sys.platform == 'cli': from serial.serialcli import Serial else: import os # chose an implementation, depending on os if os.name == 'nt': # sys.platform == 'win32': from se...
https://stackoverflow.com/ques... 

GitHub relative link in Markdown file

...entation files, whether you view the documentation on GitHub itself, or locally, using a different markup renderer. You want examples of link definitions and how they work? Here's some Markdown for you. Instead of an absolute link: [a link](https://github.com/user/repo/blob/branch/other_file...
https://stackoverflow.com/ques... 

Why do you use typedef when declaring an enum in C++?

... In C, declaring your enum the first way allows you to use it like so: TokenType my_type; If you use the second style, you'll be forced to declare your variable like this: enum TokenType my_type; As mentioned by others, this doesn't make a difference in C++. M...
https://stackoverflow.com/ques... 

Suppress/ print without b' prefix for bytes in Python 3

... If we take a look at the source for bytes.__repr__, it looks as if the b'' is baked into the method. The most obvious workaround is to manually slice off the b'' from the resulting repr(): >>> x = b'\x01\x02\x03\x04' >>> print(repr(x)) b'\x01\x02...