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How do I exit the Vim editor?
...". A colon (:) will appear at the bottom of the screen and you can type in one of the following commands. To execute a command, press the Enter key.
:q to quit (short for :quit)
:q! to quit without saving (short for :quit!)
:wq to write and quit
:wq! to write and quit even if file has only read p...
Integrating Dropzone.js into existing HTML form with other fields
...tails of an advert they wish to post. I now want to be able to add a dropzone for uploading images of the item for sale.
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Execute command on all files in a directory
... a directory, execute the command on each file, and concat the output into one big output file.
10 Answers
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Maven Snapshot Repository vs Release Repository
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Sayat, Is 1.1.0.M5 or 1.1.0.M4 one version of the snapshot?
– Alexander Suraphel
Mar 23 '16 at 12:55
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How to estimate a programming task if you have no experience in it [closed]
...ror on the side of a slightly higher time estimate after the prototype is done, as 3rd party controls usually add unexpected development time until you get really comfortable with them.
– Crescent Fresh
Jan 8 '09 at 17:09
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Creating C formatted strings (not printing them)
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Currently, one might consider using vsnprintf_s.
– amalgamate
Sep 3 '13 at 16:10
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Eclipse, regular expression search and replace
... group in regex
'\w' depicts words (alphanumeric+underscore)
'+' depicts one or more(ie one or more of alphanumeric+underscore)
'.' is a special character which depicts any character( ie .+ means
one or more of any character). Because this is a special character
to depict a '.' we should give an...
How do I get started with Node.js [closed]
...@David: More or less randomly. First two are freely available and the last one is in preview mode. I would recommend to start with The Node Beginner.
– yojimbo87
May 17 '11 at 15:18
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How to create a hex dump of file containing only the hex characters without spaces in bash?
...exdump -ve '1/1 "%.2x"'
1/1 means "each format is applied once and takes one byte", and "%.2x" is the actual format string, like in printf. In this case: 2-character hexadecimal number, leading zeros if shorter.
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Right query to get the current number of connections in a PostgreSQL DB
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Those two requires aren't equivalent. The equivalent version of the first one would be:
SELECT sum(numbackends) FROM pg_stat_database;
In that case, I would expect that version to be slightly faster than the second one, simply because it has fewer rows to count. But you are not likely going to b...