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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 ...
Any way to select without causing locking in MySQL?
...ere are locks and opposing to InnoDB those locks are table locks, blocking all requested WRITE locks and all subsequent queries during execution. The original question appears to be about InnoDB though and isolation levels are non-existent for MyISAM too - the docs for the SET TRANSACTION statement ...
Fixed page header overlaps in-page anchors
...es links inside the padding area non-clickable. To fix this you must use z-index, and set the links value higher than the anchor's. Remember you topbar should have the highest z-index value, so the page's content don't float ontop of the topbar when you scroll.
– MutttenXd
...
What is the difference between git am and git apply?
... (e.g. the output of git diff) and applies it to the working directory (or index, if --index or --cached is used).
git am takes a mailbox of commits formatted as an email messages (e.g. the output of git format-patch) and applies them to the current branch.
git am uses git apply behind the scenes,...
In MySQL what does “Overhead” mean, what is bad about it, and how to fix it?
...nce
level. Purging deleted rows,
resequencing, compressing, managing
index paths, defragmenting, etc. is
what is known as OPTIMIZATION in mysql
and other terms in other databases.
For example, IBM DB2/400 calls it
REORGANIZE PHYSICAL FILE MEMBER.
It's kind of like changing the oil...
form_for with nested resources
...date]
resources :articles do
resources :comments, :only => [:create, :index, :new]
end
I guess it's ok to have duplicate routes, and to miss a few unit-tests. (Why test? Because even if the user never sees the duplicates, your forms may refer to them, either implicitly or via named routes.) S...
Using relative URL in CSS file, what location is it relative to?
...t.jpg')); }, but don’t define a value for --bgimg yet. Then on the page /index.html, a .banner will look for /images/default.jpg, but on another page /about/index.html a .banner will look /about/images/default.jpg. very broken IMO.
– chharvey
Aug 15 '17 at 23...
Finding differences between elements of a list
...put, however it avoids a whole copy of L.
Accessing the single elements by index is very slow because every index access is a method call in python
numpy.diff is slow because it has to first convert the list to a ndarray. Obviously if you start with an ndarray it will be much faster:
In [22]: arr =...
Javascript add leading zeroes to date
... Very nice way of doing it. I think the accepted answer is really nice, but this even cleaner in my opinion
– Binke
Jan 19 '16 at 10:52
1
...
Check if a Python list item contains a string inside another string
...
@p014k: use the index() method: try: return mylist.index(myitem); except ValueError: pass
– Sven Marnach
Oct 16 '14 at 12:02
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