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What exactly does the enable-background attribute do?
...'t have it set, then technically the element can't use backgrounds created by ancestors.
The only major browser that supported it (ever) was IE10/11, so it doesn't get used very much. (It's also there as boilerplate in every Illustrator SVG export - for no good reason.)
(It's also been deprecated by...
How to select html nodes by ID with jquery when the id contains a dot?
...
@Tomalak in comments:
since ID selectors must be preceded by a hash #, there should be no ambiguity here
“#id.class” is a valid selector that requires both an id and a separate class to match; it's valid and not always totally redundant.
The correct way to select a literal ...
What exactly are iterator, iterable, and iteration?
...osing a very opinionated dfeault behavior. Consider that {'a': 'hi', 'b': 'bye'} has length of 2, but cannot be indexed by 0, 1, or 2.
– shadowtalker
Sep 19 '18 at 16:05
...
What are Flask Blueprints, exactly?
... with trees should provide access to its leaves, its roots, and its rings (by year). By itself, it is a hollow shell - it cannot route, it cannot respond, until it is impressed upon an application:
from tree_workshop import tree_mold
app.register_blueprint(tree_mold, url_prefix="/oak")
app.regist...
How to check Oracle database for long running queries
..._hash_value
and s.status = 'ACTIVE'
and s.username <> 'SYSTEM'
order by s.sid,t.piece
/
This shows locks. Sometimes things are going slow, but it's because it is blocked waiting for a lock:
select
object_name,
object_type,
session_id,
type, -- Type or system/user lock
...
jQuery Set Select Index
...
+1 - The second option worked for me. The chosen answer by John Kugelman did not work for me in IE7.
– P.Brian.Mackey
Jun 27 '11 at 17:44
2
...
Remove Server Response Header IIS7
...nseHeader = true;
And finally, remove in IIS configuration the X-Powered-By custom header in web.config.
<system.webServer>
...
<httpProtocol>
<customHeaders>
<remove name="X-Powered-By" />
</customHeaders>
</httpProtocol>
...
</system....
RabbitMQ and relationship between channel and connection
...ad-safety in Java Client API Guide:
Channel instances are safe for use by multiple threads. Requests into
a Channel are serialized, with only one thread being able to run a
command on the Channel at a time. Even so, applications should prefer
using a Channel per thread instead of sharing t...
Defeating a Poker Bot
...tive
Many online poker sites use popup
Captcha inputs that are triggered by
suspicious activity.
Some poker sites monitor playing
times and patterns (i.e., worst case
scenario is a player who plays 24x7
and 16 tables continuously, there is
a tiny tiny chance this is a real
human. (However some pla...
How do I erase an element from std::vector by index?
...ter to i position, so instead we can access the pointer to the ith element by:
&vec[i]
So we can write:
vec.erase(&vec[i]); // To delete the ith element
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