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Howto: Clean a mysql InnoDB storage engine?
...lib/mysql/ibdata1 is the busiest file in the InnoDB infrastructure. It normally houses six types of information:
Table Data
Table Indexes
MVCC (Multiversioning Concurrency Control) Data
Rollback Segments
Undo Space
Table Metadata (Data Dictionary)
Double Write Buffer (background writing to prev...
How to get the part of a file after the first line that matches a regular expression?
...e matching line)
matchtext=TERMINATE
sed -e "1,/$matchtext/d"
## Print all the lines before the line containing the matching text:
## (from line-1 to BEFORE the matching line, NOT including the matching line)
matchtext=TERMINATE
sed -e "/$matchtext/,\$d"
The important points about replacing te...
Custom views with Storyboard
...complex screens (View Controllers) I used to separate the whole thing in smaller pieces (I call them widgets). These widgets consist basically of a MyWidget.h and a MyWidget.m file as well as a MyWidget.xib file, where the root element is a UIView and the MyWidget class is the File Owner of ...
How to print time in format: 2009‐08‐10 18:17:54.811
...
Superb answer. I could do all sorts of things in PHP, but knew it was all there already in C. THanks.
– Vijay Kumar Kanta
Jan 23 '14 at 12:43
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Random number from a range in a Bash Script
... Also, it's probably fine for this use, but I believe shuf does actually permute the entire input. This makes it a bad choice if you're generating the random numbers very frequently.
– Cascabel
Mar 31 '10 at 20:42
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Redis strings vs Redis hashes to represent JSON: efficiency?
I want to store a JSON payload into redis. There's really 2 ways I can do this:
3 Answers
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Laravel Eloquent Sum of relation's column
...The documentation is a little light for some of the Collection methods but all the query builder aggregates are seemingly available besides avg() that can be found at http://laravel.com/docs/queries#aggregates.
share
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Inline elements shifting when made bold on hover
...HughHughTeotl Use font-size:0 for UL or a::after, in other words — reset all padding/marging/line-heights/font-sizes etc.
– 350D
Mar 25 '15 at 20:10
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Split string into an array in Bash
...;<< "$string"
Note that the characters in $IFS are treated individually as separators so that in this case fields may be separated by either a comma or a space rather than the sequence of the two characters. Interestingly though, empty fields aren't created when comma-space appears in the in...
How do I clear my local working directory in Git? [duplicate]
... last committed state:
git reset --hard
To remove untracked files, I usually just delete all files in the working copy (but not the .git/ folder!), then do git reset --hard which leaves it with only committed files.
A better way is to use git clean (warning: using the -x flag as below will cause...