大约有 23,300 项符合查询结果（耗时：0.0329秒） [XML]
Grouping functions (tapply, by, aggregate) and the *apply family
...apply(M, 2, max)
[1] 4 8 12 16
# 3 dimensional array
M <- array( seq(32), dim = c(4,4,2))
# Apply sum across each M[*, , ] - i.e Sum across 2nd and 3rd dimension
apply(M, 1, sum)
# Result is one-dimensional
[1] 120 128 136 144
# Apply sum across each M[*, *, ] - i.e Sum across 3rd dimension
...
Set selected option of select box
...trov
930k250250 gold badges31503150 silver badges28432843 bronze badges
4
...
Why prefer two's complement over sign-and-magnitude for signed numbers?
...ly the first 31 bits of an int in java to represent positive number if the 32nd bit is 1 , its a -ve number.
1100 (lets assume 12 in 4 bit system)
+0100(2's complement of 12)
___________________________
1 0000 (result is zero , with the carry 1 overflowing)
Thus the system of (n + 2'complement...
How would one write object-oriented code in C? [closed]
...
32 Answers
32
Active
...
How can we redirect a Java program console output to multiple files?
...answered May 3 '15 at 12:15
mike32bmike32b
39633 silver badges66 bronze badges
...
How to get relative path from absolute path
...
32
After lots of testing this method worked best for me. You need to remember that Uri treats a folder that doesn't end with a path separator ...
Create table (structure) from existing table
... = 2
– Ashish Gupta
Mar 24 '10 at 6:32
6
Qutbuddin, 1=2 will prevent data copying from source to ...
Stopwatch vs. using System.DateTime.Now for timing events [duplicate]
...
32
It's better to use the Stopwatch class because it's much more accurate than subtracting DateTim...
What is the difference between a thread and a fiber?
...
In Win32, a fiber is a sort of user-managed thread. A fiber has its own stack and its own instruction pointer etc., but fibers are not scheduled by the OS: you have to call SwitchToFiber explicitly. Threads, by contrast, are pre-...
Where does System.Diagnostics.Debug.Write output appear?
... Apparently DebugView will capture both the .NET Debug.Write() and Win32 OutputDebugString(): technet.microsoft.com/en-us/sysinternals/bb896647
– dlchambers
Dec 15 '11 at 17:29
...