大约有 3,285 项符合查询结果（耗时：0.0302秒） [XML]
Node.js or Erlang
... actually compile javascript into machine code. So node is actually pretty fast. So that's on top of the speed benefits offered by event-driven programming and non-blocking io.
Node has a pretty active community. Hop onto their IRC group on freenode and you'll see what I mean
I've noticed the above ...
Is there a good reason to use upper case for SQL keywords? [closed]
...pitalize when running ad-hoc commands at a prompt, you'll always be 1/2 as fast as someone who doesn't capitalize them if you ever have to run ad-hoc commands in production when it matters. So I write it all lower-case and then "beautify it" before check-in when someone complains they can't read it...
What are OLTP and OLAP. What is the difference between them?
...INSERT, UPDATE, DELETE). The main emphasis for OLTP systems is put on very fast query processing, maintaining data integrity in multi-access environments and an effectiveness measured by number of transactions per second. In OLTP database there is detailed and current data, and schema used to store ...
Associative arrays in Shell scripts
...
To add to Irfan's answer, here is a shorter and faster version of get() since it requires no iteration over the map contents:
get() {
mapName=$1; key=$2
map=${!mapName}
value="$(echo $map |sed -e "s/.*--${key}=\([^ ]*\).*/\1/" -e 's/:SP:/ /g' )"
}
...
What should my Objective-C singleton look like? [closed]
...s aside, there's nothing speaking against this solution, correct? And it's fast and safe.
– LearnCocos2D
Apr 6 '12 at 20:19
add a comment
|
...
Setting git parent pointer to a different parent
...rewrite history then grafts + git-filter-branch (or interactive rebase, or fast-export + e.g. reposurgeon) is the way to do it. If you want/need to preserve history, then git-replace is far superior to grafts.
– Jakub Narębski
May 23 '11 at 13:50
...
SQL Server : Columns to Rows
...er pros and cons, edit the answer or write in comments
cons
it's not as fast as dynamic SQL, rough tests gave me that xml is about 2.5 times slower that dynamic (it was one query on ~250000 rows table, so this estimate is no way exact). You could compare it yourself if you want, here's sqlfiddle ...
Controlling fps with requestAnimationFrame?
...he function takes longer than the timeout, it just runs almost any time as fast as it can, while the browser would still do redraws and trigger other timeouts inbetween the calls.
– dronus
Dec 14 '15 at 12:06
...
What is the volatile keyword useful for?
...shed its execution completely.
Source
volatile usage in Java:
The fail-fast iterators are typically implemented using a volatile counter on the list object.
When the list is updated, the counter is incremented.
When an Iterator is created, the current value of the counter is embedded in the ...
Why is good UI design so hard for some Developers? [closed]
...be he even invented an unbelievable clever algorithm that made it work 50% faster than before.
And the user doesn't care.
What an idiot.
Many developers can't stand working with normal users. They get depressed by their non-existing knowledge of technology. And that's why most developers shy away...