大约有 15,000 项符合查询结果（耗时：0.0255秒） [XML]
Remove duplicated rows
...s
deduped.data <- unique( yourdata[ , 1:3 ] )
# the fourth column no longer 'distinguishes' them,
# so they're duplicates and thrown out.
share
|
improve this answer
|
f...
How to get thread id from a thread pool?
I have a fixed thread pool that I submit tasks to (limited to 5 threads). How can I find out which one of those 5 threads executes my task (something like "thread #3 of 5 is doing this task")?
...
OceanBase使用libeasy原理源码分析：客户端 - 数据库(内核) - 清泛网 - 专...
...分析,mergeserver请求chunkserver是异步请求，chunkserver使用update是同步请求，在li 这篇主要写libeasy作为客户端的情形。结合OceanBase 0.4的mergeserver使用libeasy的情况进行分析,mergeserver请求chunkserver是异步请求，chunkserver使用update是同步请...
SQL JOIN and different types of JOINs
...
TylerH
18.1k1212 gold badges6161 silver badges8080 bronze badges
answered Nov 30 '13 at 9:34
AnupAnup
...
CoInitialize浅析一 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...769AEF7E
769AEF7Eloc_769AEF7E:
769AEF7E call ?IsRunningInRPCSS@@YGHXZ ;IsRunningInRPCSS(void)
769AEF83 test eax, eax ;判断当前进程是否是RPCSS
769AEF85 jnz loc_76A0B8ED ...
How can you do paging with NHibernate?
For example, I want to populate a gridview control in an ASP.NET web page with only the data necessary for the # of rows displayed. How can NHibernate support this?
...
In where shall I use isset() and !empty()
I read somewhere that the isset() function treats an empty string as TRUE , therefore isset() is not an effective way to validate text inputs and text boxes from a HTML form.
...
Getting the last argument passed to a shell script
$1 is the first argument.
$@ is all of them.
27 Answers
27
...
Check if a number is int or float
...
Use isinstance.
>>> x = 12
>>> isinstance(x, int)
True
>>> y = 12.0
>>> isinstance(y, float)
True
So:
>>> if isinstance(x, int):
print 'x is a int!'
x is a int!
_EDIT:_
As pointed ou...
Using an SSH keyfile with Fabric
How do you configure fabric to connect to remote hosts using SSH keyfiles (for example, Amazon EC2 instances)?
8 Answers
...