大约有 32,000 项符合查询结果（耗时：0.0404秒） [XML]
Multiplication on command line terminal
...n Arithmetic Expansion $(( )) to do some simple maths
$ echo "$((5 * 5))"
25
Check the Shell Arithmetic section in the Bash Reference Manual for a complete list of operators.
For sake of completeness, as other pointed out, if you need arbitrary precision, bc or dc would be better.
...
Creating threads - Task.Factory.StartNew vs new Thread()
...
answered Oct 25 '11 at 13:13
sanosdolesanosdole
2,3891313 silver badges1717 bronze badges
...
Using MemoryStore in production
...
|
edited Apr 25 '14 at 21:41
pixelfreak
16.7k1111 gold badges8080 silver badges104104 bronze badges
...
The most accurate way to check JS object's type?
...
|
edited Oct 25 '11 at 18:57
answered Oct 25 '11 at 18:50
...
What is stack unwinding?
...
answered Feb 25 '10 at 3:27
Nikolai FetissovNikolai Fetissov
75.6k1111 gold badges101101 silver badges160160 bronze badges
...
Extract part of a regex match
...
answered Aug 25 '09 at 10:29
Krzysztof KrasońKrzysztof Krasoń
21.7k1414 gold badges7474 silver badges9595 bronze badges
...
Java: Get last element after split
...
answered Jul 25 '09 at 12:03
Jon SkeetJon Skeet
1211k772772 gold badges85588558 silver badges88218821 bronze badges
...
Access to private inherited fields via reflection in Java
...
answered Aug 25 '10 at 15:14
aioobeaioobe
372k9393 gold badges756756 silver badges784784 bronze badges
...
getting type T from IEnumerable
...
answered May 25 '09 at 12:17
jasonjason
214k3131 gold badges392392 silver badges504504 bronze badges
...
Count number of occurences for each unique value
...
Perhaps table is what you are after?
dummyData = rep(c(1,2, 2, 2), 25)
table(dummyData)
# dummyData
# 1 2
# 25 75
## or another presentation of the same data
as.data.frame(table(dummyData))
# dummyData Freq
# 1 1 25
# 2 2 75
...