大约有 32,294 项符合查询结果（耗时：0.0697秒） [XML]
How do I break out of a loop in Scala?
...<- 0 to 1000) sum += i
except you want to stop when (sum > 1000).
What to do? There are several options.
(1a) Use some construct that includes a conditional that you test.
var sum = 0
(0 to 1000).iterator.takeWhile(_ => sum < 1000).foreach(i => sum+=i)
(warning--this depends o...
Difference between 3NF and BCNF in simple terms (must be able to explain to an 8-year old)
...y for R
BCNF is therefore more strict.
The difference is so subtle that what many people informally describe as 3NF is actually BCNF. For example, you stated here that 3NF means "data depends on the key[s]... and nothing but the key[s]", but that is really an informal description of BCNF and not ...
HTTP URL Address Encoding in Java
...nswers above are INCORRECT.
The URLEncoder class, despite is name, is NOT what needs to be here. It's unfortunate that Sun named this class so annoyingly. URLEncoder is meant for passing data as parameters, not for encoding the URL itself.
In other words, "http://search.barnesandnoble.com/bookse...
Does Java support default parameter values?
...
@JarrodRoberson: Nice, looking forward to it! What I wanted to communicate: as a reader of your blog, a 50 line example with a brief text description of what's going on would help me more than 300 lines without context.
– Christian Aichinger
...
Generic TryParse
...his is marked as the answer and upvoted so much when it does not implement what was requested: a generic TryParse. The main purpose of TryParse methods is that they don't throw exceptions when attempting to perform the parsing and have a much lower impact on performance when the parsing fails and th...
Convert char to int in C and C++
...
Depends on what you want to do:
to read the value as an ascii code, you can write
char a = 'a';
int ia = (int)a;
/* note that the int cast is not necessary -- int ia = a would suffice */
to convert the character '0' -> 0, '1' -&...
Keyboard shortcuts with jQuery
...module has some documentation, which I'm sure is great if you already know what you're doing...but for those of us trying to hack something together, an answer to the original question would be great.
– Ian Langmore
Jul 2 '14 at 14:04
...
Eclipse does not highlight matching variables
...
This is also what caused it in the first place, when instead of Ctrl + Shift + o organizing imports the highlighting is turned off -.-
– fl0w
Jan 16 '18 at 12:52
...
Server is already running in Rails
...
what exactly this file do and cause for this ..can you please explain it a little more :)
– swapnesh
Feb 25 '13 at 17:36
...
Why does cURL return error “(23) Failed writing body”?
...writing the whole page.
In curl "url" | grep -qs foo, as soon as grep has what it wants it will close the read stream from curl. cURL doesn't expect this and emits the "Failed writing body" error.
A workaround is to pipe the stream through an intermediary program that always reads the whole page b...