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What is “rvalue reference for *this”?
...-value. So if this is in the type Object:
Object foo;
foo.RValueFunc(); //error: no `RValueFunc` version exists that takes `this` as l-value.
Object().RValueFunc(); //calls the non-const, && version.
This way, you can specialize behavior based on whether the object is being accessed via a...
Python debugging tips [closed]
...tparse
LOGGING_LEVELS = {'critical': logging.CRITICAL,
'error': logging.ERROR,
'warning': logging.WARNING,
'info': logging.INFO,
'debug': logging.DEBUG}
def main():
parser = optparse.OptionParser()
parser.add_option('-l', ...
Better way to get type of a Javascript variable?
...[object Array]' : 'array',
'[object Date]' : 'date',
'[object Error]' : 'error'
},
TOSTRING = Object.prototype.toString;
function type(o) {
return TYPES[typeof o] || TYPES[TOSTRING.call(o)] || (o ? 'object' : 'null');
};
This captures many of the primitives provided by javascri...
How to write log to file
....O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
if err != nil {
log.Fatalf("error opening file: %v", err)
}
defer f.Close()
log.SetOutput(f)
log.Println("This is a test log entry")
Based on the Go docs, os.Open() can't work for log.SetOutput, because it opens the file "for reading:"
func Open
...
Pinging servers in Python
... function will still return True if you get a Destination Host Unreachable error.
Explanation
The command is ping in both Windows and Unix-like systems.
The option -n (Windows) or -c (Unix) controls the number of packets which in this example was set to 1.
platform.system() returns the platform n...
How to only find files in a given directory, and ignore subdirectories using bash
...
205
If you just want to limit the find to the first level you can do:
find /dev -maxdepth 1 -name...
浅谈HTML5 & CSS3的新交互特性 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...尽相同。了解 HTML5和CSS3的兼容性是十分必要的。下面的连接是一个专门跟踪HTML5和CSS3兼容性的网站，有兴趣的朋友可以点击查看：
http://fmbip.com/litmus
以上这篇浅谈HTML5 & CSS3的新交互特性就是小编分享给大家的全部内容了，希...
Java generics type erasure: when and what happens?
...t;).
Despite that it makes generic arrays unusable and cause some strange errors for raw types:
List<String> l= List.<String>of("h","s");
List lRaw=l
l.add(new Object())
String s=l.get(2) //Cast Exception
it causes a lot of ambiguities as
void function(ArrayList<Integer> list...
apache redirect from non www to www
...
I get the error "The webpage at example.com has resulted in too many redirects" when using this suggestion. Do others have this problem?
– Jonathan Berger
Mar 28 '11 at 19:38
...
How can I check in a Bash script if my local Git repository has changes?
...g a task you want to run and $2 is a string optionally containing a custom error message on failure. For example, call it like require_clean_work_tree deploy "Skipping deploy, clean up your work tree or run dev-push"
– Umbrella
Dec 20 '18 at 14:01
...