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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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What is the difference between HashSet and List?
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Actually, I prefer the answer that points out that HashSets are suitable in cases that you can treat your collection as "bag items". Set operations are not so frequent as Containment checks. At any point that you have a set of un...
Convert PDF to image with high resolution
...o the result of my original command (the image on the right):
(To really see and appreciate the differences between the two, right-click on each and select "Open Image in New Tab...".)
Also keep the following facts in mind:
The worse, blurry image on the right has a file size of 1.941.702 ...
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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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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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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Automatic creation date for Django model form objects?
What's the best way to set a creation date for an object automatically, and also a field that will record when the object was last updated?
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