大约有 40,000 项符合查询结果（耗时：0.0357秒） [XML]
Too many 'if' statements?
... out of bounds.
– JAB
Mar 19 '14 at 11:55
43
@JoeHarper If you want something easy to read, you w...
When should I use Inline vs. External Javascript?
...y dominate transfer time by factor 20 or more, which is now your amortized window for server-side processing of the <dynamic> portion.
It takes about 50ms for the browser (chrome, rest maybe 20% slower) to process inline jquery + signalr + angular + ng animate + ng touch + ng routes + lodash....
java get file size efficiently
...gth. If we try to get rid of these things then for one call I get the following times in microseconds:
file sum___19.0, per Iteration___19.0
raf sum___16.0, per Iteration___16.0
channel sum__273.0, per Iteration__273.0
For 100 runs and 10000 iterations I get:
file sum__1767629.0, per...
What's the difference between ASCII and Unicode?
...s useful to know.
– Mark Ransom
Apr 11 '16 at 15:34
8
To clarify, Unicode character set itself is...
How to detect Safari, Chrome, IE, Firefox and Opera browser?
...
Only use the browser detection method if it's truly necessary, such as showing browser-specific instructions to install an extension. Use feature detection when possible.
Demo: https://jsfiddle.net/6spj1059/
// Opera 8.0+
var isOpera = (!!window.opr && !!opr.addons) || !!window.opera ||...
When should I use a table variable vs temporary table in sql server?
...ed time = 7236 ms.*/
DELETE FROM @T
/* CPU time = 828 ms, elapsed time = 1120 ms.*/
UPDATE #T SET Flag=1;
/*CPU time = 672 ms, elapsed time = 980 ms.*/
DELETE FROM #T
DROP TABLE #T
share
|
imp...
Join vs. sub-query
...version-specific and query-specific.
Historically, explicit joins usually win, hence the established wisdom that joins are better, but optimisers are getting better all the time, and so I prefer to write queries first in a logically coherent way, and then restructure if performance constraints warr...
How to validate an email address in JavaScript
...
/\S+@\S+/.test("áéíóúý@ÁÉÍÓÚÝð") true
– gtournie
Jan 27 '14 at 4:57
...
Return type of '?:' (ternary conditional operator)
.... This is its value category. (This is somewhat of a simplification, in C++11 we have lvalues, xvalues and prvalues.)
In very broad and simple terms, an lvalue refers to an object in memory and an rvalue is just a value that may not necessarily be attached to an object in memory.
An assignment expre...
When should one use final for method parameters and local variables?
...o avoid bugs.
– emeraldhieu
May 22 '11 at 17:54
Can you do this in IntelliJ as well?
– Koray Tug...