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Search and replace in bash using regular expressions
...'s are processed in order. Also, the g flag for the expression will match all occurrences in the input.
You can also pick your favorite tool using this method, i.e. perl, awk, e.g.:
echo "$MYVAR" | perl -pe 's/[a-zA-Z]/X/g and s/[0-9]/N/g'
This may allow you to do more creative matches... For ...
LAST_INSERT_ID() MySQL
...t get it working first as I was using asp.net with MySQL and needed to add Allow User Variables=True to the Connection String to allow variables.
– Martin
Oct 1 '10 at 10:19
117
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How do you detect the clearing of a “search” HTML5 input?
...Javascript or jQuery other than, say, detecting when the box is clicked at all or doing some sort of location click-detecting (x-position/y-position)?
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Convert string to variable name in JavaScript
...ontext. this is context, what it points to depends on how the function is called. In JS, 50% of the time this is window unless you enable strict mode and this becomes undefined and will throw an error. Scope is something completely different and it's not an object (except global scope which is mirro...
On Duplicate Key Update same as insert
...real life query there are differences. My question is quiet simple: Do I really need to specify all the fields (and values in my first example) if they are the same as in the insert? I just want to insert all or if there is a unique value match: update all.
– Roy
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scp or sftp copy multiple files with single command
...lders to multiple remote folders, these examples won't do the job, as they all will scp files to ~ or ./ only.
– aesede
Apr 28 '15 at 17:09
22
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How to make the hardware beep sound in Mac OS X 10.6
...ble hardware. Before most computers had sound cards, most machines had a small speaker or piezo buzzer connected to one of the channels of a timer chip. This could be used to generate simple tones or beeps. Even after many computers integrated sound cards, it remained common for quite some time for ...
invalid_grant trying to get oAuth token from google
...trying to get an oAuth token from Google to connect to their contacts api. All the information is correct and I have tripple checked this so kind of stumped.
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Using JQuery - preventing form from submitting
...the same page, and it worked, still unsure what was wrong though, but it's all good now. thanks!
– Lucy Weatherford
Feb 19 '12 at 8:16
1
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What is a columnar database?
...an easy fashion).
How do they differ from relational databases?
They generally differ from traditional (row-oriented) databases with regards to ...
performance...
storage requirements ...
ease of modification of the schema ...
...in specific use cases of DBMSes.
In particular they offer advanta...