大约有 40,000 项符合查询结果(耗时:0.0506秒) [XML]

https://stackoverflow.com/ques... 

Wrap long lines in Python [duplicate]

... There are two approaches which are not mentioned above, but both of which solve the problem in a way which complies with PEP 8 and allow you to make better use of your space. They are: msg = ( 'This message is so long, that it requires ' 'more than {x} lines.{...
https://stackoverflow.com/ques... 

Hibernate Error: org.hibernate.NonUniqueObjectException: a different object with the same identifier

...en associated with the session but is not on the same instance of B as the one on A. What primary key generator are you using? The reason I ask is this error is related to how you're telling hibernate to ascertain the persistent state of an object (i.e. whether an object is persistent or not). Th...
https://stackoverflow.com/ques... 

Using git, how do I ignore a file in one branch but have it committed in another branch?

...st on how to effectively use the excludesfile for different branches, like one for public github and one for heroku deployment. Here's the quick and dirty: $ git branch public_viewing $ cd .git/ $ touch info/exclude_from_public_viewing $ echo "path/to/secret/file" > info/exclude_from_public_v...
https://stackoverflow.com/ques... 

Are string.Equals() and == operator really same? [duplicate]

... apparent contradictions that appear in the question are caused because in one case the Equals function is called on a string object, and in the other case the == operator is called on the System.Object type. string and object implement equality differently from each other (value vs. reference respe...
https://stackoverflow.com/ques... 

How can I get the full object in Node.js's console.log(), rather than '[Object]'?

...log() implicitly applies util.inspect() to its arguments, assuming the 1st one is not a format string. If you're happy with util.inspect()'s default options, simply console.log(myObject) will do - no need to require util; console.dir() does the same, but accepts only ` object to inspect; as of at le...
https://stackoverflow.com/ques... 

Do HTML WebSockets maintain an open connection for each client? Does this scale?

I am curious if anyone has any information about the scalability of HTML WebSockets. For everything I've read it appears that every client will maintain an open line of communication with the server. I'm just wondering how that scales and how many open WebSocket connections a server can handle. Mayb...
https://stackoverflow.com/ques... 

How can I initialise a static Map?

...tic { Map<Integer, String> aMap = ....; aMap.put(1, "one"); aMap.put(2, "two"); myMap = Collections.unmodifiableMap(aMap); } } share | improve this answer ...
https://stackoverflow.com/ques... 

Map over object preserving keys

...nction _.mapObject to map the values and preserve the keys. _.mapObject({ one: 1, two: 2, three: 3 }, function (v) { return v * 3; }); // => { one: 3, two: 6, three: 9 } DEMO With Lodash Lodash provides a function _.mapValues to map the values and preserve the keys. _.mapValues({ one: 1,...
https://stackoverflow.com/ques... 

Copying files from one directory to another in Java

I want to copy files from one directory to another (subdirectory) using Java. I have a directory, dir, with text files. I iterate over the first 20 files in dir, and want to copy them to another directory in the dir directory, which I have created right before the iteration. In the code, I want to c...
https://stackoverflow.com/ques... 

In a PHP project, what patterns exist to store, access and organize helper objects? [closed]

....html http://googletesting.blogspot.com/2008/08/where-have-all-singletons-gone.html Alternatives a service provider http://java.sun.com/blueprints/corej2eepatterns/Patterns/ServiceLocator.html dependency injection http://en.wikipedia.org/wiki/Dependency_injection and a php explanation: http:/...