大约有 43,000 项符合查询结果（耗时：0.0554秒） [XML]
What Automatic Resource Management alternatives exist for Scala?
...sing Using :), Example:
val lines: Try[Seq[String]] =
Using(new BufferedReader(new FileReader("file.txt"))) { reader =>
Iterator.unfold(())(_ => Option(reader.readLine()).map(_ -> ())).toList
}
or using Using.resource avoid Try
val lines: Seq[String] =
Using.resource(new Buffe...
How to find largest objects in a SQL Server database?
... queries manually for a while now and I cannot believe these reports are already there!)
– Jennifer Zouak
Apr 1 '15 at 16:41
...
How to delete a word and go into insert mode in Vim?
...
:help objects in vim to read more about these sorts of selections.
– Aaron
Apr 22 '13 at 15:39
|
...
Why does String.valueOf(null) throw a NullPointerException?
...
@Joachim: I just read the item, and was pleasantly surprised to find that these two methods were explicitly discussed! Bloch went a step further and claim that since String.valueOf(Object) and valueOf(char[]) do completely different things an...
How to remove unreferenced blobs from my git repo
...might want to keep: Stashes; Old history not in any current branches; etc. Read the documentation to be sure this is what you want.
To expire the reflog, and then prune all objects not in branches:
git reflog expire --expire-unreachable=now --all
git gc --prune=now
git reflog expire --expire-unreac...
Which characters are valid/invalid in a JSON key name?
... from the horse's mouth, though, at json.org. It takes about one minute to read the entire spec end-to-end.
– Marcelo Cantos
Dec 30 '11 at 4:21
...
Implementing IDisposable correctly
...ting properties to null or whatever (especially since that interferes with readonly semantics)
– Thomas
Nov 14 '14 at 5:37
1
...
Why is Scala's immutable Set not covariant in its type?
...bose and use "set.contains" rather than "set" (and arguably "set.contains" reads better in many cases anyway).
– Matt R
Mar 3 '11 at 20:32
4
...
What is the fundamental difference between WebSockets and pure TCP?
I've read about WebSockets and I wonder why browser couldn't simply open trivial TCP connection and communicate with server like any other desktop application. And why this communication is possible via websockets?
...
mongodb count num of distinct values per field/key
...r distinct has its own charms but this is just gold :) -- anyhow I have to read more about aggregates to achieve desired set of results to filter data
– Talha
May 8 '18 at 14:20
...