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How to check if a symlink exists
...
How about using readlink?
# if symlink, readlink returns not empty string (the symlink target)
# if string is not empty, test exits w/ 0 (normal)
#
# if non symlink, readlink returns empty string
# if string is empty, test exits w/ 1 (error)
simlink? () {
test "$(readlink "${1}")";
}
FILE...
Getting the array length of a 2D array in Java
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Consider
public static void main(String[] args) {
int[][] foo = new int[][] {
new int[] { 1, 2, 3 },
new int[] { 1, 2, 3, 4},
};
System.out.println(foo.length); //2
System.out.println(foo[0].length); //3
System.out.print...
Can lambda functions be templated?
...n a templated class or function.
#include <iostream>
#include <string>
using namespace std;
template<typename T>
void boring_template_fn(T t){
auto identity = [](decltype(t) t){ return t;};
std::cout << identity(t) << std::endl;
}
int main(int argc, char *...
Use PPK file in Mac Terminal to connect to remote connection over SSH [closed]
I have been using Putty on Windows XP and used the .ppk file to connect to my Linux servers (several servers).
3 Answers
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Scroll to a div using jquery
...click( function() { // Your code here } ); in order to bind a click event handler to the object.... Like in my example below. As an aside, you can also just trigger a click on an object by using it without arguments, like object.click().
Third, scrollTo is a plugin in jQuery. I don't know if you ha...
Assert an object is a specific type
...to say here... Try to change the instanceOf(BaseClass.class) to instanceOf(String.class) and you'll see that it compile just fine but there will be an AssertionError thrown.
– maba
Sep 3 '14 at 11:39
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jQuery - getting custom attribute from selected option
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You're adding the event handler to the <select> element.
Therefore, $(this) will be the dropdown itself, not the selected <option>.
You need to find the selected <option>, like this:
var option = $('option:selected', this).attr('m...
Sort Dictionary by keys
...lements in dictionary. Please help me. For example private var contacts: [(String, [User])] = []
– Alexander Khitev
Aug 14 '16 at 11:54
5
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How to check for a JSON response using RSpec?
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JSON is only a string, a sequence of characters and their order matters. {"a":"1","b":"2"} and {"b":"2","a":"1"} are not equal strings which notate equal objects. You should not compare strings but objects, do JSON.parse('{"a":"1","b":"2"...
Why do this() and super() have to be the first statement in a constructor?
...:
public class Foo extends Baz {
private final Bar myBar;
public Foo(String arg1, String arg2) {
// ...
// ... Some other stuff needed to construct a 'Bar'...
// ...
final Bar b = new Bar(arg1, arg2);
super(b.baz()):
myBar = b;
}
}
So basically construct an object b...