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Capture Signature using HTML5 and iPad
...es and how well it looks. One note about using it which helped me: add a border to the canvas so you can see how it is being adjusted. Also note that css changes to the canvas do some crazy things, so just specify a height and width in the canvas element if this get out of control.
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Difference between the 'controller', 'link' and 'compile' functions when defining a directive
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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g++ undefined reference to typeinfo
...I had to get used to with SO is not referring to "above" answers since the order may change based on votes. I don't usually refer to any other answers now since they can be deleted as well. My belief is that answers should be standalone. I still refer to user names for attribution however.
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How to check if activity is in foreground or in visible background?
...This is how it looks like when Activity B is launched from Activity A.
The order of events is from bottom to top so you can see that Activity A onStop is called after Activity B onResume was already called.
In case a dialog is shown your activity is dimmed in the background and only onPause is ca...
Performance difference for control structures 'for' and 'foreach' in C#
...reach loop: 2005ms
Swapping them around to see if it deals with the order of things yields the same results (nearly).
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Get top n records for each group of grouped results
...ueries for each group:
(
select *
from mytable
where `group` = 1
order by age desc
LIMIT 2
)
UNION ALL
(
select *
from mytable
where `group` = 2
order by age desc
LIMIT 2
)
There are a variety of ways to do this, see this article to determine the best route for your situatio...
How to create a directory and give permission in single command
...group what I just made (yodirectory),
# (owner,group,others--in that order) where I made it (i.e. in mahome)
#
Now, to add just a tiny bit more about those octal permissions. When you make a directory, "your system" take your default directory perms' [which applies for new d...
Postgres: SQL to list table foreign keys
... pg_catalog.pg_constraint r
WHERE r.conrelid = '16485' AND r.contype = 'f' ORDER BY 1
In this case, 16485 is the oid of the table I'm looking at - you can get that one by just casting your tablename to regclass like:
WHERE r.conrelid = 'mytable'::regclass
Schema-qualify the table name if it's n...
Is there a way to get colored text in Github Flavored Markdown? [duplicate]
...one of the GFM elements, then you can play with a github.css stylesheet in order to colors that way.
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Detect If Browser Tab Has Focus
... API without a prefix for a while now. I kept Microsoft specific prefix in order to stay compatible with IE10.
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