大约有 40,000 项符合查询结果（耗时：0.0481秒） [XML]
In log4j, does checking isDebugEnabled before logging improve performance?
...ava 8, you don't have to use isDebugEnabled() to improve the performance.
https://logging.apache.org/log4j/2.0/manual/api.html#Java_8_lambda_support_for_lazy_logging
import java.util.logging.Logger;
...
Logger.getLogger("hello").info(() -> "Hello " + name);
...
Permission denied (publickey) when SSH Access to Amazon EC2 instance [closed]
...iption. But you can find some in AWS EC2 documentation, bullet point 4. :
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AccessingInstancesLinux.html
Use the ssh command to connect to the instance. You'll specify the private key (.pem) file and user_name@public_dns_name. For Amazon Linux, t...
What does an underscore in front of an import statement mean?
...
https://golang.org/doc/effective_go.html#blank
It's either a work in progress, or imported for side effects. In this case, I believe it's for the side effects, as described in the doc.
...
Does C# have extension properties?
...
For the moment it is still not supported out of the box by Roslyn compiler ...
Until now, the extension properties were not seen as valuable enough to be included in the previous versions of C# standard. C# 7 and C# 8.0 have seen this as proposal champion but it wasn't released yet, most o...
How does Facebook disable the browser's integrated Developer Tools?
...ctual code is pretty similar to @joeldixon66's link; ours is a little more complicated for no good reason.
Chrome wraps all console code in
with ((console && console._commandLineAPI) || {}) {
<code goes here>
}
... so the site redefines console._commandLineAPI to throw:
Object.d...
Javascript - removing undefined fields from an object [duplicate]
...defined) {
delete obj[prop];
}
}
}
Working demo: http://jsfiddle.net/jfriend00/djj5g5fu/
share
|
improve this answer
|
follow
|
...
Converting a Java collection into a Scala collection
...
add a comment
|
127
...
HTTP GET with request body
...mment about including a body with a GET request.
Yes. In other words, any HTTP request message is allowed to contain a message body, and thus must parse messages with that in mind. Server semantics for GET, however, are restricted such that a body, if any, has no semantic meaning to the request. Th...
Is it possible to make the -init method private in Objective-C?
...creating singletons. It's virtually always unnecessary and is just adding complication for no real significant advantage.
Instead, just write your code such that your +sharedWhatever method is how you access a singleton, and document that as the way to get the singleton instance in your header. T...
Why does calling a function in the Node.js REPL with )( work?
... World!"); }
hi)(
Error:
SyntaxError: Unexpected token )
at Module._compile (module.js:439:25)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
at...