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What is an EJB, and what does it do?
...or accesses other connectivity/ directory resources, or is accessed from multiple clients, or is intended as a SOA service, EJBs today are usually "bigger, stronger, faster (or at least more scalable) and simpler" than POJOs. They are most valuable for servicing large numbers of users over the web ...
Difference between a Postback and a Callback
...ge is posted with ASP.Net is because ASP.Net encloses the whole page in a <form> with a post method, and so when a submit button is clicked in the page, the form is sent to the server with all of the fields that are in the form... basically the whole page itself.
If you are using FireBug (for...
How do I set default values for functions parameters in Matlab?
Is it possible to have default arguments in Matlab? For instance, here:
16 Answers
16...
How can I pad a String in Java?
...rojects (Commons Lang, Commons Collections, Commons IO, etc). It's also built by really smart guys (Kevin Bourrillion et al), many of whom are active at SO. Myself I ended up replacing the various Apache Commons libs with just Guava years ago, and have had no regrets.
– Jonik
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Contains method for a slice
...rm string) bool {
i := sort.SearchStrings(s, searchterm)
return i < len(s) && s[i] == searchterm
}
SearchString promises to return the index to insert x if x is not present (it could be len(a)), so a check of that reveals whether the string is contained the sorted slice.
...
How to implement a good __hash__ function in python [duplicate]
When implementing a class with multiple properties (like in the toy example below), what is the best way to handle hashing?
...
Can I set max_retries for requests.request?
...brary that does the retrying. To set a different maximum retry count, use alternative transport adapters:
from requests.adapters import HTTPAdapter
s = requests.Session()
s.mount('http://stackoverflow.com', HTTPAdapter(max_retries=5))
The max_retries argument takes an integer or a Retry() object...
How do I parse JSON in Android? [duplicate]
...
Android has all the tools you need to parse json built-in. Example follows, no need for GSON or anything like that.
Get your JSON:
Assume you have a json string
String result = "{\"someKey\":\"someValue\"}";
Create a JSONObject:
JSONObject jObject = new JSONObject(result...
google mock分享（全网最全最好的gmock文档，没有之一） - C/C++ - 清泛网 ...
...
EXPECT_CALL(mock_object, method(matcher1, matcher2, ...))
.With(multi_argument_matcher)
.Times(cardinality)
.InSequence(sequences)
.After(expectations)
.WillOnce(action)
.WillRepeatedly(action)
.RetiresOnSaturation();
解释一下这些参数（虽然很多...
System.currentTimeMillis() vs. new Date() vs. Calendar.getInstance().getTime()
...lis());
}
so it already automatically does what you suggest. Date's default constructor holds this:
public Date() {
this(System.currentTimeMillis());
}
So there really isn't need to get system time specifically unless you want to do some math with it before creating your Calendar/Date objec...