大约有 44,000 项符合查询结果（耗时：0.0649秒） [XML]
Count number of files within a directory in Linux? [closed]
... the top adding up the file sizes for a total amount. You should use ls -1 and not the ls -l. Also if one wants hidden files but without the directories . and .. you should use ls -1A | wc -l
– Daniel Biegler
Mar 7 '18 at 11:02
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Opposite of %in%: exclude rows with values specified in a vector
... to Z. I want to create a subset D2, which excludes some values, say, B, N and T. Basically, I want a command which is the opposite of %in%
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What are the differences between SML and OCaml? [closed]
...ut more important differences first.
SML is a language with a definition and a standard. It is stable (and in fact has been frozen so it cannot evolve). Objective Caml is an implementation controlled by a small group at INRIA. It continues to evolve. (IMO the evolution is managed well.)
SML has...
How to sort a collection by date in MongoDB?
I am using MongoDB with Node.JS. I have a collection which contains a date and other rows. The date is a JavaScript Date object.
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Convert NSDate to NSString
... Don't use init with NSDateFormatter. It was removed after iOS 3.2. (And if you use a class method instead, it will autorelease and you won't have the leak problem, too.)
– zekel
Nov 8 '10 at 5:20
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Set initial focus in an Android application
In my Android application it automatically focuses the first Button I have in my layout, giving it an orange outline. How can I set the initial focus preferably in XML, and can this be set to nothing?
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horizontal line and right way to code it in html, css
I need to draw a horizontal line after some block, and I have three ways to do it:
10 Answers
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Execute bash script from URL
...nately, leave off the initial redirection on yours, which is redirecting standard input; bash takes a filename to execute just fine without redirection, and <(command) syntax provides a path.
bash <(curl -s http://mywebsite.com/myscript.txt)
It may be clearer if you look at the output of ec...
Why is UICollectionViewCell's outlet nil?
...ICollectionViewCell in Interface Builder, binded views on it to the class, and then when I want to use and set a string to the label on the string, tha label has a nil value.
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how to check the jdk version used to compile a .class file [duplicate]
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You're looking for this on the command line (for a class called MyClass):
On Unix/Linux:
javap -verbose MyClass | grep "major"
On Windows:
javap -verbose MyClass | findstr "major"
You want the major version from the results. Here are some example values...