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How to find out which view is focused?
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Call getCurrentFocus() on the Activity.
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How does bash tab completion work?
...ary, as already mentioned by fixje, manages the command line editing, and calls back to bash when tab is pressed, to enable completion. Bash then gives (see next point) a list of possible completions, and readline inserts as much characters as are identified unambiguously by the characters already t...
What is the purpose of a plus symbol before a variable?
this really sounds like a simple question but I had no luck searching. what does the +d in
3 Answers
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How to test an Internet connection with bash?
...on't get, just check page availability
$? : shell return code
0 : shell "All OK" code
Without wget
#!/bin/bash
echo -e "GET http://google.com HTTP/1.0\n\n" | nc google.com 80 > /dev/null 2>&1
if [ $? -eq 0 ]; then
echo "Online"
else
echo "Offline"
fi
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Should you ever use protected member variables?
... state.
If you don't want any leaking of internal state, then declaring all your member variables private is the way to go.
If you don't really care that subclasses can access internal state, then protected is good enough.
If a developer comes along and subclasses your class they may mess it u...
jQuery: Selecting by class and input type
...ass")
And it will also work properly. In my humble opinion this syntax really looks rather ugly, as most of the time I expect : style selectors to come last. As I said, though, either one will work.
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Delete element in a slice
...end(a[:i], a[i+1:]...)
... is syntax for variadic arguments in Go.
Basically, when defining a function it puts all the arguments that you pass into one slice of that type. By doing that, you can pass as many arguments as you want (for example, fmt.Println can take as many arguments as you want).
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Chrome Developer Tools: How to find out what is overriding a CSS rule?
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what if ALL of them are cancelled? Probably due to a script? How do you find out who did it?
– darkgaze
Jun 23 '17 at 8:28
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Count number of objects in list [closed]
...'s put some stuff in it - 3 components/indexes/tags (whatever you want to call it) each with differing amounts of elements:
> mylist <- list(record1=c(1:10),record2=c(1:5),record3=c(1:2))
If you are interested in just the number of components in a list use:
> length(mylist)
[1] 3
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Ignore parent padding
...e the padding is NOT included in the 100px width, this means that it's actually 120px wide, and your <hr> will be 20px from the end of your div. See this jsFiddle for what I mean: jsfiddle.net/YVrWy/1
– Alastair Pitts
Nov 28 '10 at 11:42
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