大约有 1,832 项符合查询结果（耗时：0.0219秒） [XML]
Concatenate multiple files but include filename as section headers
I would like to concatenate a number of text files into one large file in terminal. I know I can do this using the cat command. However, I would like the filename of each file to precede the "data dump" for that file. Anyone know how to do this?
...
How can I copy the output of a command directly into my clipboard?
...
You can then pipe the output into xclip to be copied into the clipboard:
cat file | xclip
To paste the text you just copied, you shall use:
xclip -o
To simplify life, you can set up an alias in your .bashrc file as I did:
alias "c=xclip"
alias "v=xclip -o"
To see how useful this is, imagin...
How to search by key=>value in a multidimensional array in PHP
... }
return $results;
}
$arr = array(0 => array(id=>1,name=>"cat 1"),
1 => array(id=>2,name=>"cat 2"),
2 => array(id=>3,name=>"cat 1"));
print_r(search($arr, 'name', 'cat 1'));
Output:
Array
(
[0] => Array
(
[id...
Local variables in nested functions
...me point during that execution was assigned each of the 'cow', 'dog', and 'cat' strings, but at the end of the function, cage contains that last value 'cat'. Thus, when you call each of the dynamically returned functions, you get the value 'cat' printed.
The work-around is to not rely on closures. ...
Programmatically creating Markdown tables in R with KnitR
...Banana"),size=40,replace=TRUE),
Var2=sample(x=c("Dog","Cat","Bunny"),size=40,replace=TRUE))
tbl1 <- table(my.df$Var1,my.df$Var2)
tbl1 <- cbind(tbl1,rowSums(tbl1))
tbl1 <- rbind(tbl1,colSums(tbl1))
colnames(tbl1)[4] <- "TOTAL"
rownames(tbl1)[4] <- "TOTAL"
# Beca...
Array extension to remove object by value
...omArray.filter { return $0 != object }
}
Sample:
var myArray = ["Dog", "Cat", "Ant", "Fish", "Cat"]
myArray = arrayRemovingObject("Cat", fromArray:myArray )
Swift 2 (xcode 7b4) array extension:
extension Array where Element: Equatable {
func arrayRemovingObject(object: Element) -> [Elem...
Is List a subclass of List? Why are Java generics not implicitly polymorphic?
...do with a List<Animal> - you can add any animal to it... including a cat. Now, can you logically add a cat to a litter of puppies? Absolutely not.
// Illegal code - because otherwise life would be Bad
List<Dog> dogs = new ArrayList<Dog>(); // ArrayList implements List
List<Anim...
Convert string to symbol-able in ruby
...usly exist. See Symbol#id2name.
"Koala".intern #=> :Koala
s = 'cat'.to_sym #=> :cat
s == :cat #=> true
s = '@cat'.to_sym #=> :@cat
s == :@cat #=> true
This can also be used to create symbols that cannot be represented using the :xxx notat...
How to concatenate stdin and a string?
How to I concatenate stdin to a string, like this?
9 Answers
9
...
How to remove an element from an array in Swift
...ant to modify a variable you should use var instead, e.g:
var animals = ["cats", "dogs", "chimps", "moose"]
animals.remove(at: 2) //["cats", "dogs", "moose"]
A non-mutating alternative that will keep the original collection unchanged is to use filter to create a new collection without the eleme...