大约有 41,300 项符合查询结果（耗时：0.0692秒） [XML]
Select rows of a matrix that meet a condition
...can define a column by name:
m[m[, "three"] == 11,]
Or by number:
m[m[,3] == 11,]
Note that if only one row matches, the result is an integer vector, not a matrix.
share
|
improve this answer
...
Using -performSelector: vs. just calling the method
...
bbum
160k2323 gold badges262262 silver badges353353 bronze badges
answered Sep 29 '09 at 15:09
ennuikillerennui...
How do I iterate over a range of numbers defined by variables in Bash?
...
1838
for i in $(seq 1 $END); do echo $i; done
edit: I prefer seq over the other methods because I c...
How to check if a given directory exists in Ruby
...1
Totor
73755 silver badges1717 bronze badges
answered Jul 6 '09 at 3:12
EmilyEmily
16....
Difference between single and double quotes in Bash
... echo '$(echo "upg")'
$(echo "upg")
The Bash manual has this to say:
3.1.2.2 Single Quotes
Enclosing characters in single quotes (') preserves the literal value of each character within the quotes. A single quote may not occur between single quotes, even when preceded by a backslash.
...
XMLHttpRequest status 0 (responseText is empty)
...4.0.5).
– Daniel Roethlisberger
Dec 31 '14 at 21:20
3
...
Error when testing on iOS simulator: Couldn't register with the bootstrap server
...
31 Answers
31
Active
...
Is there a way to specify an “empty” C# lambda expression?
...
234
Action doNothing = () => { };
...
Is there a difference between PhoneGap and Cordova commands?
...
http://phonegap.com/blog/2012/03/19/phonegap-cordova-and-whate28099s-in-a-name/
I think this url explains what you need.
Phonegap is built on Apache Cordova nothing else. You can think of Apache Cordova as the engine that powers PhoneGap. Over time, the P...
Should have subtitle controller already set Mediaplayer error Android
...
3 Answers
3
Active
...