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Take a full page screenshot with Firefox on the command-line
...hich enables you to save a complete page opened in your browser into a png file. Most probably you are looking for a utility like commandlineprint2.
After installing the extension, you just need to type the command:
firefox -print http://google.com -printfile ~/foo.png
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How to express a NOT IN query with ActiveRecord/Rails?
...this, if you are using Rails 4 look at the answers by Trung Lê` and VinniVidiVicci.
15 Answers
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How to use git merge --squash?
...ontaining all commit messages you squashed. In that case, try git commit --file .git/SQUASH_MSG (via stackoverflow.com/a/11230783/923560 ).
– Abdull
Jun 3 '16 at 16:02
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How to find gaps in sequential numbering in mysql?
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Update
ConfexianMJS provided much better answer in terms of performance.
The (not as fast as possible) answer
Here's version that works on table of any size (not just on 100 rows):
SELECT (t1.id + 1) as gap_starts_at,
(SELECT MIN(t3.id) -...
Check if object value exists within a Javascript array of objects and if not add a new object to arr
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I've assumed that ids are meant to be unique here. some is a great function for checking the existence of things in arrays:
const arr = [{ id: 1, username: 'fred' }, { id: 2, username: 'bill' }, { id: 3, username: 'ted' }];
function ad...
What is the difference between id and class in CSS, and when should I use them? [duplicate]
Here I gave an id to the div element and it's applying the relevant CSS for it.
15 Answers
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How can one print a size_t variable portably using the printf family?
...the C++1x draft (highly unlikely), or you'll need to move your code into a file that's compiled as C99. Otherwise, your only option is to cast your variables to unsigned long long and use %llu to be maximally portable.
– Adam Rosenfield
Apr 13 '10 at 1:52
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YouTube Video Embedded via iframe Ignoring z-index?
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}
}
}
</script>
I load it in the footer.php Wordpress file. Code found in comment here (thanks Gerson)
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Xcode 4.2 - declaration of '…' will not be visible outside of this function warning
...n of the missing struct. Add a single "struct sockaddr_in;" line to the .h file
– fishinear
Nov 6 '12 at 17:33
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How to prevent the activity from loading twice on pressing the button
...you tried by adding this android:launchMode = "singleInstance" in Manifest file of your activity tag?
– Shylendra Madda
Jul 16 '19 at 13:35
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